[Emc-users] NFS mount & lockup [Was: micro-v belts, smaller]

[Erik Christiansen]

On 30.04.15 19:51, Gene Heskett wrote:
> But I have a PITA in the machine that runs my lathe, its recently turned 
> into a crashomatic, with uptimes of about an hour!
> 
> And since it is an nfs mount, when it crashes, it locks up the rest of 
> the machines that are mounting it.  Thats the PITA problem.  And IMO a 
> damned bug in nsf4.

Gene, if the problem is not just loss of access (unavoidable once the
NFS exporter has crashed), but the lock-up you describe, then changing
the NFS mount from "hard" to "soft" should fix that.

("man nfs" says data integrity may suffer if connection is not over
TCP-IP, but I've never noticed, admittedly with now 30-year old NFS,
under Solaris)

That manpage does, though, say: "Using the intr option is preferred to
using the soft option because it is significantly less likely to result
in data corruption." But then it goes on to say it isn't much use after
kernel 2.6.25. Looks like the developers don't use NFS much.

In the old days, I used soft mounts to allow a server farm to come up
despite NFS cross-mounts. With hard mounts, and A needing B, and B
needing A, they could never come up. Using a soft mount on one side let
them boot, at the cost of a manual NFS mount a little later. (Soft
mounts on both sides could necessitate two manual NFS mounts)

Erik

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Re: [Emc-users] Computer crashing. Re: micro-v belts, smaller

[Gregg Eshelman]

On 4/30/2015 10:52 PM, Gene Heskett wrote:

>> There's a 5 volt line not used on newer ATX power supplies so if you
>> have a tester and it says that line is bad, look to see if the wire is
>> not in the connector.
>
> I think the drive logic, in both drives, (rotating magnetic, and rotating
> optical) needs 5 volts in these boxes, so I would expect it to be
> present and accounted for.  Unless I missed the memo...

Here's the memo. :)
http://www.tomshardware.com/forum/337378-28-white-wire-missing


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[Emc-users] micro-v belts, smaller

[Roland Jollivet]

Hi Gene

Have you looked at RS components?

http://za.rs-online.com/web/c/pneumatics-hydraulics-power-transmission/power-transmission-belts/timing-belts/?sra=p

Regards
Roland


On 1 May 2015 at 05:15, Gene Heskett  wrote:

> On Thursday 30 April 2015 21:13:48 N. Christopher Perry wrote:
> > Ouch!  They've been reasonable for the stuff I've been looking for
> > recently, so I thought they might be worth a look.  That quote would
> > have given me sticker shock too.
> >
> > N. Christopher Perry
>
> I think, for those of you using this stuff to make a living,  that its
> probably a persuable idea, if the delivery times were like overnight so
> you could get back to work.
>
> Being retired, and the senior member of this list, my time limit is when
> I run out of time & forget to wake up in the morning. :)  If it takes me
> 2 or 3 hours a day for a week or more to make the pulley's for this, it
> is not that big a deal.  ATM I have 2 or 3 other projects not related to
> this, like cut some edge fillets out of a plastic sump pit, which is
> easier that chisling the cement away precisely with a 57lb electric
> jackhammer so the sump sits solidly on its flange, then I can mix up
> enough cement to refill one edge of the hole, I had to move it away from
> an outside wall of my basement when I ran into the house foundation
> about 5" down, so I had to move the hole about 6 or 7".  Get that done,
> and some permanent 1.25" line up to a extra deep P trap just beyond the
> tub/showers trap and deliver the water to the far end of the house where
> it will enter at the head end of the system, thereby helping to keep it
> flushed.
>
> This place was built in '74, by a contractor that couldn't pass the
> plumbers test if we gave him the answers. There are, I'm sure you've
> heard, just 3 answers, shit runs downhill (fail), hots on the left
> (passed) and payday is on Friday.
>
> Then I went over to Lowes yesterday and bought all the 8' treated 2x6's
> they had that were good enough for deck planking, and started ripping
> out the 2x4's I put down in 2003 or so when I put a front deck on my
> shop building, but figured CWF would be good to make it keep.  Silly me.
> The neighbors across the back fence have something that looks sorta like
> a maple that shades the shop somewhat, but it sheds so much junk it
> keeps a soggy mass of litter that would need cleaned up and burnt about
> weekly, which of course hasn't been done.  Net result is that I have put
> a foot thru it in 2 places now & feel like it could be quite a few more
> if I don't walk my 170lbs around carefully.
>
> So I brought the last 5 gollon bucket of clay from the pit up this
> morning, then threw a 60lb bag of sackrete on the riders hood & drove it
> around to the back porch, put it back on the 2 wheeler and took it to
> the basement and brought the sump up so I can trim that plastic away
> outside, keeping the stink away from the Mrs & her COPD.
>
> That about wore my back out so I spent the rest of the afternoon working
> on the first pulley, fighting with the lathes computer as its uptimes
> recently have been hours, crashed 3 times on me while doing that.  It
> will be made from 2 pieces of 1/2" fairly hard alu, lapped a while on
> 600 grit on a granite surface plate, then wet with superglue and clamped
> overnight.  One piece is held in my 4 jaw, and the other piece was
> turned until it was clean & about 71mm in diameter, then tried to bore a
> taper-lock hole all the way thru it at the usual 3/4" a foot taper.  I
> think its big enough, but will re-measure and increase the diameter if
> needed to get about 1mm of steel minimum between the alu and a 20mm
> shaft.  Once thats done, make the hub out of old mine shafting and slit
> it at 90 degrees, then drill & tap the 6 holes for some 6-32 screws.
> Make a 20mm shaft to put it on for the rest of the rib machining.  So
> 1/2" of it will have a pitch diameter of about 67mm, and the other half
> inch will be turned down to around 42mm, and ribbed for about a 38mm
> pitch diameter. Using a 3 rib belt I think. The 2nd pulley assembly will
> be just like it, except the taperlock will fit the 8mm shaft on this 400
> watt motor I took out of the lathe.  If I can arrange it, the faces of
> the two pulleys won't clear each other more than 5 or 10 thou, putting
> the motor much closer to where I want it.
>
> With 2 pulleys like that I'll have a stepdown, or a stepup in spindle
> revs, depending on which pulleys the belt is positioned at.  The up is
> sorely needed when doing a pcb etch mechanically. Or carving the fingers
> on more of the Green & Green style furniture. I obviously do a lot of
> this by the seat of my pants. :)
>
> So I have plenty to keep me as busy as I want to be at what is now 80 yo.
>
> And its next to find a psu for that computer, its an ARK shoebox, with a
> D525MW mobo in it and some sort of a psu that looks like a lappy's psu
> without the candy bar outer box.  IIRC.  Need to look again.  

Re: [Emc-users] Computer crashing. Re: micro-v belts, smaller

[Gene Heskett]

On Friday 01 May 2015 00:07:29 Gregg Eshelman wrote:
> On 4/30/2015 5:51 PM, Gene Heskett wrote:
> > I think I am going to have to find another PSU for it, there is no
> > other rhyme or reason for it to go away in the middle of a job, like
> > it has done 3x today.  I padded up to the shop & tapped the reset
> > button just now so I'll be good for maybe an hour.  But I also just
> > commented that line out of fstab on this machine until such time as
> > I get that one fixed.
>
> Check all over the motherboard for capacitors with bulged tops and/or
> signs of leaking. Also open up the power supply and look for same.
>
> All the electrolytic can capacitors should be completely flat on top.
> The slightest bulge indicates its bad and will be doing out of
> specification nastiness to voltage levels and data signals.

Theres an echo in here Gregg. Capacitor ESR is the single most important 
characteristic in modern digital junk.

You may have forgotten that I am A C.E.T., so those are the first things 
I look for.  I just haven't pulled it off the shelf to look yet, thats 
short stepladder work.  Tomorrow if its not raining.

> I've seen several power supplies that would do a voltage drop or
> increase after being on for a while. A drop can get you lockups,
> random reboots and even (oh such fun) data corruption. Too much and
> CPUs and hard drives can get fried.
>
Yeah, there are times when I would kill for a 60 yo VTVM, its needle 
response is instant.  Now we have to drag out a scope to look at such 
stuff.  It is even better at finding that stuff, but most look at a 
scope & go "whazzat thing?", and have no clue even when you tell them 
what its doing. I think the majority of us here can use one though.  
I've had a scope probe in one hand since 1950ish.

> There's a 5 volt line not used on newer ATX power supplies so if you
> have a tester and it says that line is bad, look to see if the wire is
> not in the connector.

I think the drive logic, in both drives, (rotating magnetic, and rotating 
optical) needs 5 volts in these boxes, so I would expect it to be 
present and accounted for.  Unless I missed the memo...

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Cheers, Gene Heskett
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Genes Web page 

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[Emc-users] Computer crashing. Re: micro-v belts, smaller

[Gregg Eshelman]

On 4/30/2015 5:51 PM, Gene Heskett wrote:

> I think I am going to have to find another PSU for it, there is no other
> rhyme or reason for it to go away in the middle of a job, like it has
> done 3x today.  I padded up to the shop & tapped the reset button just
> now so I'll be good for maybe an hour.  But I also just commented that
> line out of fstab on this machine until such time as I get that one
> fixed.

Check all over the motherboard for capacitors with bulged tops and/or 
signs of leaking. Also open up the power supply and look for same.

All the electrolytic can capacitors should be completely flat on top. 
The slightest bulge indicates its bad and will be doing out of 
specification nastiness to voltage levels and data signals.

I've seen several power supplies that would do a voltage drop or 
increase after being on for a while. A drop can get you lockups, random 
reboots and even (oh such fun) data corruption. Too much and CPUs and 
hard drives can get fried.

There's a 5 volt line not used on newer ATX power supplies so if you 
have a tester and it says that line is bad, look to see if the wire is 
not in the connector.

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Re: [Emc-users] micro-v belts, smaller

[Gene Heskett]

On Thursday 30 April 2015 23:07:02 Gregg Eshelman wrote:
> On 4/30/2015 12:16 PM, Gene Heskett wrote:
> > Greetings all;
> >
> > I have been snooping around with my google-fu, and coming up a bit
> > long.
> >
> > Long as in the smallest of tese belts with a kevlar backing, is a
> > 3/8" wide 3 ribber, 21" long.  That is too long for what I am trying
> > to do.
>
> You may have some luck googling fractional horsepower micro rib belt

I did, and got a bit closer, looks like I found 2 even smaller than the J 
family, but the rib widths on the small stuff seem to be a very tightly 
guarded secret.  I can cut grooves most any width, & included angle but 
I have to know the rib to rib spacing.  Get on the horn & lean on some 
of them tomorrow for full engineering drawings of the sheeve they expect 
to run on I guess.  Tried to dl the gates pdf a couple times but 
iceweasel seems to be allergic to the links provided.  It has worked 
nicely several times before.

Thanks Gregg.

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Cheers, Gene Heskett
-- 
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 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

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Re: [Emc-users] micro-v belts, smaller

[Gregg Eshelman]

On 4/30/2015 1:52 PM, Dave Cole wrote:
> Micro V belts are apparently targeted at OEMs like car manufacturers who
> can make their own pulleys and order thousands of custom spec belts.
>
> A friend of mine tried to buy a setup for a custom machine and nothing
> was off the shelf and the selection of belt lengths was very limited.
> He could get a belt length that would work but the pulleys were a custom
> order - expensive and 6 week delivery.

When I fixed up a 1914 Sears Expert 13" lathe I found a multi rib belt 
using Bando's catalog. They list by number of ribs and length instead of 
application.

The one I got happened to be used on White/Volvo semi truck engines to 
drive a pump, so a lil' 100 year old metal lathe, running the ribs on 
flat pulleys, was hardly any strain. No need to release the tension 
(simply the weight of motor and countershaft) when not running the lathe.


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Re: [Emc-users] micro-v belts, smaller

[Gene Heskett]

On Thursday 30 April 2015 21:13:48 N. Christopher Perry wrote:
> Ouch!  They've been reasonable for the stuff I've been looking for
> recently, so I thought they might be worth a look.  That quote would
> have given me sticker shock too.
>
> N. Christopher Perry

I think, for those of you using this stuff to make a living,  that its 
probably a persuable idea, if the delivery times were like overnight so 
you could get back to work.

Being retired, and the senior member of this list, my time limit is when 
I run out of time & forget to wake up in the morning. :)  If it takes me 
2 or 3 hours a day for a week or more to make the pulley's for this, it 
is not that big a deal.  ATM I have 2 or 3 other projects not related to 
this, like cut some edge fillets out of a plastic sump pit, which is 
easier that chisling the cement away precisely with a 57lb electric 
jackhammer so the sump sits solidly on its flange, then I can mix up 
enough cement to refill one edge of the hole, I had to move it away from 
an outside wall of my basement when I ran into the house foundation 
about 5" down, so I had to move the hole about 6 or 7".  Get that done, 
and some permanent 1.25" line up to a extra deep P trap just beyond the 
tub/showers trap and deliver the water to the far end of the house where 
it will enter at the head end of the system, thereby helping to keep it 
flushed.

This place was built in '74, by a contractor that couldn't pass the 
plumbers test if we gave him the answers. There are, I'm sure you've 
heard, just 3 answers, shit runs downhill (fail), hots on the left 
(passed) and payday is on Friday.

Then I went over to Lowes yesterday and bought all the 8' treated 2x6's 
they had that were good enough for deck planking, and started ripping 
out the 2x4's I put down in 2003 or so when I put a front deck on my 
shop building, but figured CWF would be good to make it keep.  Silly me.  
The neighbors across the back fence have something that looks sorta like 
a maple that shades the shop somewhat, but it sheds so much junk it 
keeps a soggy mass of litter that would need cleaned up and burnt about 
weekly, which of course hasn't been done.  Net result is that I have put 
a foot thru it in 2 places now & feel like it could be quite a few more 
if I don't walk my 170lbs around carefully.

So I brought the last 5 gollon bucket of clay from the pit up this 
morning, then threw a 60lb bag of sackrete on the riders hood & drove it 
around to the back porch, put it back on the 2 wheeler and took it to 
the basement and brought the sump up so I can trim that plastic away 
outside, keeping the stink away from the Mrs & her COPD.

That about wore my back out so I spent the rest of the afternoon working 
on the first pulley, fighting with the lathes computer as its uptimes 
recently have been hours, crashed 3 times on me while doing that.  It 
will be made from 2 pieces of 1/2" fairly hard alu, lapped a while on 
600 grit on a granite surface plate, then wet with superglue and clamped 
overnight.  One piece is held in my 4 jaw, and the other piece was 
turned until it was clean & about 71mm in diameter, then tried to bore a 
taper-lock hole all the way thru it at the usual 3/4" a foot taper.  I 
think its big enough, but will re-measure and increase the diameter if 
needed to get about 1mm of steel minimum between the alu and a 20mm 
shaft.  Once thats done, make the hub out of old mine shafting and slit 
it at 90 degrees, then drill & tap the 6 holes for some 6-32 screws.  
Make a 20mm shaft to put it on for the rest of the rib machining.  So 
1/2" of it will have a pitch diameter of about 67mm, and the other half 
inch will be turned down to around 42mm, and ribbed for about a 38mm 
pitch diameter. Using a 3 rib belt I think. The 2nd pulley assembly will 
be just like it, except the taperlock will fit the 8mm shaft on this 400 
watt motor I took out of the lathe.  If I can arrange it, the faces of 
the two pulleys won't clear each other more than 5 or 10 thou, putting 
the motor much closer to where I want it.

With 2 pulleys like that I'll have a stepdown, or a stepup in spindle 
revs, depending on which pulleys the belt is positioned at.  The up is 
sorely needed when doing a pcb etch mechanically. Or carving the fingers 
on more of the Green & Green style furniture. I obviously do a lot of 
this by the seat of my pants. :)

So I have plenty to keep me as busy as I want to be at what is now 80 yo.

And its next to find a psu for that computer, its an ARK shoebox, with a 
D525MW mobo in it and some sort of a psu that looks like a lappy's psu 
without the candy bar outer box.  IIRC.  Need to look again.  Tomorrow 
if its not raining. That pretty girl on tv says its likely.

Now that I have bored everone out of their skulls, I'll get me coat & say 
goodnight all. ;-)

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdersh

Re: [Emc-users] micro-v belts, smaller

[Gregg Eshelman]

On 4/30/2015 12:16 PM, Gene Heskett wrote:
> Greetings all;
>
> I have been snooping around with my google-fu, and coming up a bit long.
>
> Long as in the smallest of tese belts with a kevlar backing, is a 3/8"
> wide 3 ribber, 21" long.  That is too long for what I am trying to do.

You may have some luck googling fractional horsepower micro rib belt


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Re: [Emc-users] micro-v belts, smaller

[MC Cason]

They also have high shipping costs.  A $15.00 MXL timing belt, was going 
to cost me $18.00 to ship, so I decided to go elsewhere.


On 04/30/2015 08:13 PM, N. Christopher Perry wrote:
> Ouch!  They've been reasonable for the stuff I've been looking for recently, 
> so I thought they might be worth a look.  That quote would have given me 
> sticker shock too.
>
> N. Christopher Perry
>
>> On Apr 30, 2015, at 8:13 PM, Gene Heskett  wrote:
>>
>>> On Thursday 30 April 2015 18:19:57 N. Christopher Perry wrote:
>>> Have you tried SDP?:  SDP-SI.com
>>>
>>> N. Christopher Perry
>> Thanks Christopher.  I got an estimate for a belt & 2 timing pulleys from
>> them about a year ago, but they wanted well over $300.  I was tempted to
>> ask if the pulley's were made out of gold, but restrained myself.  Even
>> at that price it wasn't quite what I asked for...
>>
>> After that, my thoughts are that they would be about the last line on the
>> list.
>>

-- 
MC Cason
Eagle3D - Created by Matthias Weißer
github.com/mcason/Eagle3D



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Re: [Emc-users] micro-v belts, smaller

[N. Christopher Perry]

Ouch!  They've been reasonable for the stuff I've been looking for recently, so 
I thought they might be worth a look.  That quote would have given me sticker 
shock too.

N. Christopher Perry

> On Apr 30, 2015, at 8:13 PM, Gene Heskett  wrote:
> 
>> On Thursday 30 April 2015 18:19:57 N. Christopher Perry wrote:
>> Have you tried SDP?:  SDP-SI.com
>> 
>> N. Christopher Perry
> 
> Thanks Christopher.  I got an estimate for a belt & 2 timing pulleys from 
> them about a year ago, but they wanted well over $300.  I was tempted to 
> ask if the pulley's were made out of gold, but restrained myself.  Even 
> at that price it wasn't quite what I asked for...
> 
> After that, my thoughts are that they would be about the last line on the 
> list.
> 
>>> On Apr 30, 2015, at 2:16 PM, Gene Heskett  wrote:
>>> 
>>> Greetings all;
>>> 
>>> I have been snooping around with my google-fu, and coming up a bit
>>> long.
>>> 
>>> Long as in the smallest of tese belts with a kevlar backing, is a
>>> 3/8" wide 3 ribber, 21" long.  That is too long for what I am trying
>>> to do.
>>> 
>>> What I have, under design but not carved just yet, would be a set of
>>> pulley's to be used on my toy mill when I remove the whole gearbox
>>> on the spindle and replace it with something resembling the LMS is
>>> selling for the mini-mill.  But the motor will be the 400 watter I
>>> took off the lathe when I pout the 1 horse on it, so the motors
>>> pulley will need an 8mm hub, probably another shop made taperlock,
>>> while the spindle pulley will need a 30mm hub, possibly taperlock if
>>> I can find room for it.  The two pulleys will be otherwise alike,
>>> with a 2/1 ratio when the belt is in the reduction grooves, and a
>>> 1/2 when its in the higher speed grooves, gfiving a variable speed
>>> range of up to 2500 in low range, and up to 10k in high range from a
>>> 5k motor.  That ought to speed up making pcb's a bit.
>>> 
>>> Unforch, on the gates site, no real data unless I kill a tree with
>>> their pdf catalog.  Other sites, which obviously stock only the
>>> popular sizes for automotive useage, do not show anything in the 3
>>> rib 3/8" width, shorter that 21".  That would put the motor a couple
>>> inches farther off to the side than I'd like.
>>> 
>>> Has anyone else found such smallish beasts and can give me a URL?
>>> 
>>> 
>>> Cheers, Gene Heskett
>>> --
>>> "There are four boxes to be used in defense of liberty:
>>> soap, ballot, jury, and ammo. Please use in that order."
>>> -Ed Howdershelt (Author)
>>> Genes Web page 
>>> 
>>> 
>>> -- One dashboard for servers and applications across
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>>> 50+ applications Performance metrics, stats and reports that give
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>>> tracing using APM Insight.
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>> 
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>> Physical-Virtual-Cloud Widest out-of-the-box monitoring support with
>> 50+ applications Performance metrics, stats and reports that give you
>> Actionable Insights Deep dive visibility with transaction tracing
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>> ___
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> 
> Cheers, Gene Heskett
> -- 
> "There are four boxes to be used in defense of liberty:
> soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page 
> 
> --
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Re: [Emc-users] micro-v belts, smaller

[Gene Heskett]

On Thursday 30 April 2015 18:19:57 N. Christopher Perry wrote:
> Have you tried SDP?:  SDP-SI.com
>
> N. Christopher Perry

Thanks Christopher.  I got an estimate for a belt & 2 timing pulleys from 
them about a year ago, but they wanted well over $300.  I was tempted to 
ask if the pulley's were made out of gold, but restrained myself.  Even 
at that price it wasn't quite what I asked for...

After that, my thoughts are that they would be about the last line on the 
list.

> > On Apr 30, 2015, at 2:16 PM, Gene Heskett  wrote:
> >
> > Greetings all;
> >
> > I have been snooping around with my google-fu, and coming up a bit
> > long.
> >
> > Long as in the smallest of tese belts with a kevlar backing, is a
> > 3/8" wide 3 ribber, 21" long.  That is too long for what I am trying
> > to do.
> >
> > What I have, under design but not carved just yet, would be a set of
> > pulley's to be used on my toy mill when I remove the whole gearbox
> > on the spindle and replace it with something resembling the LMS is
> > selling for the mini-mill.  But the motor will be the 400 watter I
> > took off the lathe when I pout the 1 horse on it, so the motors
> > pulley will need an 8mm hub, probably another shop made taperlock,
> > while the spindle pulley will need a 30mm hub, possibly taperlock if
> > I can find room for it.  The two pulleys will be otherwise alike,
> > with a 2/1 ratio when the belt is in the reduction grooves, and a
> > 1/2 when its in the higher speed grooves, gfiving a variable speed
> > range of up to 2500 in low range, and up to 10k in high range from a
> > 5k motor.  That ought to speed up making pcb's a bit.
> >
> > Unforch, on the gates site, no real data unless I kill a tree with
> > their pdf catalog.  Other sites, which obviously stock only the
> > popular sizes for automotive useage, do not show anything in the 3
> > rib 3/8" width, shorter that 21".  That would put the motor a couple
> > inches farther off to the side than I'd like.
> >
> > Has anyone else found such smallish beasts and can give me a URL?
> >
> >
> > Cheers, Gene Heskett
> > --
> > "There are four boxes to be used in defense of liberty:
> > soap, ballot, jury, and ammo. Please use in that order."
> > -Ed Howdershelt (Author)
> > Genes Web page 
> >
> > 
> >-- One dashboard for servers and applications across
> > Physical-Virtual-Cloud Widest out-of-the-box monitoring support with
> > 50+ applications Performance metrics, stats and reports that give
> > you Actionable Insights Deep dive visibility with transaction
> > tracing using APM Insight.
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>
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> 50+ applications Performance metrics, stats and reports that give you
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

--
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Re: [Emc-users] micro-v belts, smaller

[Gene Heskett]

On Thursday 30 April 2015 16:14:43 Todd Zuercher wrote:
> Try searching for a J section belt, I found some listed as small as 8"
> OC length (what ever that means).
> http://beltpalace.com/heavy-duty-belts-poly-v-ribbed--j-section.html

I found that belt earlier today, someplace else at about a 4 dollar bill.
Polyester back if that means much.

That one could be used if I set the motor father away than I had in mind.  
If my belt length calcs are full of it.  I imagine there is a formula 
for unequal pulley sizes but I haven't found that one yet either.

But I think, before I even dismount that part from the chuck, that I had 
better find one of those toy psu's they use in the atom powered ARK 
boxes.

Thanks Todd.  I may yell at the folks who had it in the $4 range tomorrow 
and see if they can go a bit shorter.

But tonight, I am about used up.

> - Original Message -
> From: "Gene Heskett" 
> To: emc-users@lists.sourceforge.net
> Sent: Thursday, April 30, 2015 2:16:55 PM
> Subject: [Emc-users] micro-v belts, smaller
>
> Greetings all;
>
> I have been snooping around with my google-fu, and coming up a bit
> long.
>
> Long as in the smallest of tese belts with a kevlar backing, is a 3/8"
> wide 3 ribber, 21" long.  That is too long for what I am trying to do.
>
> What I have, under design but not carved just yet, would be a set of
> pulley's to be used on my toy mill when I remove the whole gearbox on
> the spindle and replace it with something resembling the LMS is
> selling for the mini-mill.  But the motor will be the 400 watter I
> took off the lathe when I pout the 1 horse on it, so the motors pulley
> will need an 8mm hub, probably another shop made taperlock, while the
> spindle pulley will need a 30mm hub, possibly taperlock if I can find
> room for it.  The two pulleys will be otherwise alike, with a 2/1
> ratio when the belt is in the reduction grooves, and a 1/2 when its in
> the higher speed grooves, gfiving a variable speed range of up to 2500
> in low range, and up to 10k in high range from a 5k motor.  That ought
> to speed up making pcb's a bit.
>
> Unforch, on the gates site, no real data unless I kill a tree with
> their pdf catalog.  Other sites, which obviously stock only the
> popular sizes for automotive useage, do not show anything in the 3 rib
> 3/8" width, shorter that 21".  That would put the motor a couple
> inches farther off to the side than I'd like.
>
> Has anyone else found such smallish beasts and can give me a URL?
>
>
> Cheers, Gene Heskett

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

--
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Re: [Emc-users] micro-v belts, smaller

[Gene Heskett]

On Thursday 30 April 2015 15:52:44 Dave Cole wrote:
> Micro V belts are apparently targeted at OEMs like car manufacturers
> who can make their own pulleys and order thousands of custom spec
> belts.
>
> A friend of mine tried to buy a setup for a custom machine and nothing
> was off the shelf and the selection of belt lengths was very limited.
> He could get a belt length that would work but the pulleys were a
> custom order - expensive and 6 week delivery.
>
> I'd go with V belts, HTD or Timing belts and forget about Micro V
> belts unless you happen onto the proper parts.
>
> Dave

Ah, Dave?  Did you miss the memo?  We are used to making our own special 
parts.  Making the pulley's doesn't seem like a particularly hard thing 
to do, so that is what I am about.

But I have a PITA in the machine that runs my lathe, its recently turned 
into a crashomatic, with uptimes of about an hour!

And since it is an nfs mount, when it crashes, it locks up the rest of 
the machines that are mounting it.  Thats the PITA problem.  And IMO a 
damned bug in nsf4.

I think I am going to have to find another PSU for it, there is no other 
rhyme or reason for it to go away in the middle of a job, like it has 
done 3x today.  I padded up to the shop & tapped the reset button just 
now so I'll be good for maybe an hour.  But I also just commented that 
line out of fstab on this machine until such time as I get that one 
fixed.
 
> On 4/30/2015 2:35 PM, Gene Heskett wrote:
> > On Thursday 30 April 2015 14:16:55 Gene Heskett wrote:
> >> Greetings all;
> >>
> >> I have been snooping around with my google-fu, and coming up a bit
> >> long.
> >>
> >> Long as in the smallest of tese belts with a kevlar backing, is a
> >> 3/8" wide 3 ribber, 21" long.  That is too long for what I am
> >> trying to do.
> >>
> >> What I have, under design but not carved just yet, would be a set
> >> of pulley's to be used on my toy mill when I remove the whole
> >> gearbox on the spindle and replace it with something resembling the
> >> LMS is selling for the mini-mill.  But the motor will be the 400
> >> watter I took off the lathe when I pout the 1 horse on it, so the
> >> motors pulley will need an 8mm hub, probably another shop made
> >> taperlock, while the spindle pulley will need a 30mm hub,
> >
> > Actually, I came across a spare set of the nylon gears for the OEM 2
> > speed, and the spindle diameter where the gears sit, and where my
> > pulleys will set, is 20.00mm in diameter, which will leave lots more
> > room for a taperlock hub.  I've turned one 1/2" thick square to
> > 7076T4 (or something like it, turns beautifully) and the larger of
> > the 2 pulleys will have 70mm for top of rib diameter.  This also
> > gives room enough to put one of my encoder disks on it, which should
> > enable me to do rigid threading on the mill too.
> >
> > $64 question. I have a suspicion I had better make the taperlock
> > insert out of steel as opposed to the same alloy of alu.  Do you
> > folks concur?
> >
> > My thoughts are: that dependent on the assembly lube, the alu
> > against alu will gall and seize a lot faster that a steel insert
> > would. I haven't yet cut the tapered bore for it.
> >
> >> possibly taperlock if I can find
> >> room for it.  The two pulleys will be otherwise alike, with a 2/1
> >> ratio when the belt is in the reduction grooves, and a 1/2 when its
> >> in the higher speed grooves, gfiving a variable speed range of up
> >> to 2500 in low range, and up to 10k in high range from a 5k motor. 
> >> That ought to speed up making pcb's a bit.
> >>
> >> Unforch, on the gates site, no real data unless I kill a tree with
> >> their pdf catalog.  Other sites, which obviously stock only the
> >> popular sizes for automotive useage, do not show anything in the 3
> >> rib 3/8" width, shorter that 21".  That would put the motor a
> >> couple inches farther off to the side than I'd like.
> >>
> >> Has anyone else found such smallish beasts and can give me a URL?
> >
> > Thanks all.
> >
> > Cheers, Gene Heskett
>
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>
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> 50+ applications Performance metrics, stats and reports that give you
> Actionable Insights Deep dive visibility with transaction tracing
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

---

Re: [Emc-users] micro-v belts, smaller

[N. Christopher Perry]

Have you tried SDP?:  SDP-SI.com

N. Christopher Perry

> On Apr 30, 2015, at 2:16 PM, Gene Heskett  wrote:
> 
> Greetings all;
> 
> I have been snooping around with my google-fu, and coming up a bit long.
> 
> Long as in the smallest of tese belts with a kevlar backing, is a 3/8" 
> wide 3 ribber, 21" long.  That is too long for what I am trying to do.
> 
> What I have, under design but not carved just yet, would be a set of 
> pulley's to be used on my toy mill when I remove the whole gearbox on 
> the spindle and replace it with something resembling the LMS is selling 
> for the mini-mill.  But the motor will be the 400 watter I took off the 
> lathe when I pout the 1 horse on it, so the motors pulley will need an 
> 8mm hub, probably another shop made taperlock, while the spindle pulley 
> will need a 30mm hub, possibly taperlock if I can find room for it.  The 
> two pulleys will be otherwise alike, with a 2/1 ratio when the belt is 
> in the reduction grooves, and a 1/2 when its in the higher speed 
> grooves, gfiving a variable speed range of up to 2500 in low range, and 
> up to 10k in high range from a 5k motor.  That ought to speed up making 
> pcb's a bit.
> 
> Unforch, on the gates site, no real data unless I kill a tree with their 
> pdf catalog.  Other sites, which obviously stock only the popular sizes 
> for automotive useage, do not show anything in the 3 rib 3/8" width, 
> shorter that 21".  That would put the motor a couple inches farther off 
> to the side than I'd like.
> 
> Has anyone else found such smallish beasts and can give me a URL?
> 
> 
> Cheers, Gene Heskett
> -- 
> "There are four boxes to be used in defense of liberty:
> soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page 
> 
> --
> One dashboard for servers and applications across Physical-Virtual-Cloud 
> Widest out-of-the-box monitoring support with 50+ applications
> Performance metrics, stats and reports that give you Actionable Insights
> Deep dive visibility with transaction tracing using APM Insight.
> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
> ___
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> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users

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Re: [Emc-users] micro-v belts, smaller

[Todd Zuercher]

Try searching for a J section belt, I found some listed as small as 8" OC 
length (what ever that means).
http://beltpalace.com/heavy-duty-belts-poly-v-ribbed--j-section.html

- Original Message -
From: "Gene Heskett" 
To: emc-users@lists.sourceforge.net
Sent: Thursday, April 30, 2015 2:16:55 PM
Subject: [Emc-users] micro-v belts, smaller

Greetings all;

I have been snooping around with my google-fu, and coming up a bit long.

Long as in the smallest of tese belts with a kevlar backing, is a 3/8" 
wide 3 ribber, 21" long.  That is too long for what I am trying to do.

What I have, under design but not carved just yet, would be a set of 
pulley's to be used on my toy mill when I remove the whole gearbox on 
the spindle and replace it with something resembling the LMS is selling 
for the mini-mill.  But the motor will be the 400 watter I took off the 
lathe when I pout the 1 horse on it, so the motors pulley will need an 
8mm hub, probably another shop made taperlock, while the spindle pulley 
will need a 30mm hub, possibly taperlock if I can find room for it.  The 
two pulleys will be otherwise alike, with a 2/1 ratio when the belt is 
in the reduction grooves, and a 1/2 when its in the higher speed 
grooves, gfiving a variable speed range of up to 2500 in low range, and 
up to 10k in high range from a 5k motor.  That ought to speed up making 
pcb's a bit.

Unforch, on the gates site, no real data unless I kill a tree with their 
pdf catalog.  Other sites, which obviously stock only the popular sizes 
for automotive useage, do not show anything in the 3 rib 3/8" width, 
shorter that 21".  That would put the motor a couple inches farther off 
to the side than I'd like.

Has anyone else found such smallish beasts and can give me a URL?


Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

--
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Re: [Emc-users] micro-v belts, smaller

[Dave Cole]

Micro V belts are apparently targeted at OEMs like car manufacturers who 
can make their own pulleys and order thousands of custom spec belts.

A friend of mine tried to buy a setup for a custom machine and nothing 
was off the shelf and the selection of belt lengths was very limited.  
He could get a belt length that would work but the pulleys were a custom 
order - expensive and 6 week delivery.

I'd go with V belts, HTD or Timing belts and forget about Micro V belts 
unless you happen onto the proper parts.

Dave

On 4/30/2015 2:35 PM, Gene Heskett wrote:
>
> On Thursday 30 April 2015 14:16:55 Gene Heskett wrote:
>> Greetings all;
>>
>> I have been snooping around with my google-fu, and coming up a bit
>> long.
>>
>> Long as in the smallest of tese belts with a kevlar backing, is a 3/8"
>> wide 3 ribber, 21" long.  That is too long for what I am trying to do.
>>
>> What I have, under design but not carved just yet, would be a set of
>> pulley's to be used on my toy mill when I remove the whole gearbox on
>> the spindle and replace it with something resembling the LMS is
>> selling for the mini-mill.  But the motor will be the 400 watter I
>> took off the lathe when I pout the 1 horse on it, so the motors pulley
>> will need an 8mm hub, probably another shop made taperlock, while the
>> spindle pulley will need a 30mm hub,
> Actually, I came across a spare set of the nylon gears for the OEM 2
> speed, and the spindle diameter where the gears sit, and where my
> pulleys will set, is 20.00mm in diameter, which will leave lots more
> room for a taperlock hub.  I've turned one 1/2" thick square to 7076T4
> (or something like it, turns beautifully) and the larger of the 2
> pulleys will have 70mm for top of rib diameter.  This also gives room
> enough to put one of my encoder disks on it, which should enable me to
> do rigid threading on the mill too.
>
> $64 question. I have a suspicion I had better make the taperlock insert
> out of steel as opposed to the same alloy of alu.  Do you folks concur?
>
> My thoughts are: that dependent on the assembly lube, the alu against alu
> will gall and seize a lot faster that a steel insert would. I haven't
> yet cut the tapered bore for it.
>   
>> possibly taperlock if I can find
>> room for it.  The two pulleys will be otherwise alike, with a 2/1
>> ratio when the belt is in the reduction grooves, and a 1/2 when its in
>> the higher speed grooves, gfiving a variable speed range of up to 2500
>> in low range, and up to 10k in high range from a 5k motor.  That ought
>> to speed up making pcb's a bit.
>>
>> Unforch, on the gates site, no real data unless I kill a tree with
>> their pdf catalog.  Other sites, which obviously stock only the
>> popular sizes for automotive useage, do not show anything in the 3 rib
>> 3/8" width, shorter that 21".  That would put the motor a couple
>> inches farther off to the side than I'd like.
>>
>> Has anyone else found such smallish beasts and can give me a URL?
> Thanks all.
>
> Cheers, Gene Heskett

---
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Re: [Emc-users] micro-v belts, smaller

[Gene Heskett]

On Thursday 30 April 2015 14:16:55 Gene Heskett wrote:
> Greetings all;
>
> I have been snooping around with my google-fu, and coming up a bit
> long.
>
> Long as in the smallest of tese belts with a kevlar backing, is a 3/8"
> wide 3 ribber, 21" long.  That is too long for what I am trying to do.
>
> What I have, under design but not carved just yet, would be a set of
> pulley's to be used on my toy mill when I remove the whole gearbox on
> the spindle and replace it with something resembling the LMS is
> selling for the mini-mill.  But the motor will be the 400 watter I
> took off the lathe when I pout the 1 horse on it, so the motors pulley
> will need an 8mm hub, probably another shop made taperlock, while the
> spindle pulley will need a 30mm hub,

Actually, I came across a spare set of the nylon gears for the OEM 2 
speed, and the spindle diameter where the gears sit, and where my 
pulleys will set, is 20.00mm in diameter, which will leave lots more 
room for a taperlock hub.  I've turned one 1/2" thick square to 7076T4 
(or something like it, turns beautifully) and the larger of the 2 
pulleys will have 70mm for top of rib diameter.  This also gives room 
enough to put one of my encoder disks on it, which should enable me to 
do rigid threading on the mill too.

$64 question. I have a suspicion I had better make the taperlock insert 
out of steel as opposed to the same alloy of alu.  Do you folks concur?  

My thoughts are: that dependent on the assembly lube, the alu against alu 
will gall and seize a lot faster that a steel insert would. I haven't 
yet cut the tapered bore for it.
 
> possibly taperlock if I can find 
> room for it.  The two pulleys will be otherwise alike, with a 2/1
> ratio when the belt is in the reduction grooves, and a 1/2 when its in
> the higher speed grooves, gfiving a variable speed range of up to 2500
> in low range, and up to 10k in high range from a 5k motor.  That ought
> to speed up making pcb's a bit.
>
> Unforch, on the gates site, no real data unless I kill a tree with
> their pdf catalog.  Other sites, which obviously stock only the
> popular sizes for automotive useage, do not show anything in the 3 rib
> 3/8" width, shorter that 21".  That would put the motor a couple
> inches farther off to the side than I'd like.
>
> Has anyone else found such smallish beasts and can give me a URL?

Thanks all.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

--
One dashboard for servers and applications across Physical-Virtual-Cloud 
Widest out-of-the-box monitoring support with 50+ applications
Performance metrics, stats and reports that give you Actionable Insights
Deep dive visibility with transaction tracing using APM Insight.
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[Emc-users] micro-v belts, smaller

[Gene Heskett]

Greetings all;

I have been snooping around with my google-fu, and coming up a bit long.

Long as in the smallest of tese belts with a kevlar backing, is a 3/8" 
wide 3 ribber, 21" long.  That is too long for what I am trying to do.

What I have, under design but not carved just yet, would be a set of 
pulley's to be used on my toy mill when I remove the whole gearbox on 
the spindle and replace it with something resembling the LMS is selling 
for the mini-mill.  But the motor will be the 400 watter I took off the 
lathe when I pout the 1 horse on it, so the motors pulley will need an 
8mm hub, probably another shop made taperlock, while the spindle pulley 
will need a 30mm hub, possibly taperlock if I can find room for it.  The 
two pulleys will be otherwise alike, with a 2/1 ratio when the belt is 
in the reduction grooves, and a 1/2 when its in the higher speed 
grooves, gfiving a variable speed range of up to 2500 in low range, and 
up to 10k in high range from a 5k motor.  That ought to speed up making 
pcb's a bit.

Unforch, on the gates site, no real data unless I kill a tree with their 
pdf catalog.  Other sites, which obviously stock only the popular sizes 
for automotive useage, do not show anything in the 3 rib 3/8" width, 
shorter that 21".  That would put the motor a couple inches farther off 
to the side than I'd like.

Has anyone else found such smallish beasts and can give me a URL?


Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

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Re: [Emc-users] problem setting appropriate speeds in joint and world mode for 6 axis robot with genserkins

[Christian Stöveken]

On Thu, Apr 30, 2015 at 6:35 PM, andy pugh  wrote:

> On 30 April 2015 at 17:23, Christian Stöveken
>  wrote:
> > When switching to world mode the speed limits from axis 1/2/3 apply for
> > X/Y/Z which doesn't make a whole lot of sense to me.
>
> 123 or 012?
>
you are right: 012 of course. (robot axis are counted as 1234567 that's
always a cause for misunderstandings here)


> Are the axes actually angular?

please specify


> I am not sure what difference that
> setting makes, but I _think_ it only controls which limits slider /
> pins they obey.
>
^^ it certainly has that effect.
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Re: [Emc-users] problem setting appropriate speeds in joint and world mode for 6 axis robot with genserkins

[Andrew]

2015-04-30 19:23 GMT+03:00 Christian Stöveken :

> So I found like a day and a half to work on our Mantuec R15 / granite
> devices VSD-XE
> project again.
>
> When trying to run some gcode (generated with RhinoCAM) I noticed
> the robot was only moving very slowly in world mode in one direction (X
> axis).
>
> I setup all 6 axis as angular axis with the speed/acceleration settings
> tuned
> to slightly less than the VSD-XE's can handle.
>
> When switching to world mode the speed limits from axis 1/2/3 apply for
> X/Y/Z which doesn't make a whole lot of sense to me.
>
> Is this the intended behaviour?
>
>
This is due to mixed  joints/axes.
IIRC axis_N values in INI file actually represent type, velocity,
acceleration and limits for world axes, but resolution and homing behavior
for joints.

Any ideas on how I should tackle this problem - keeping in mind that
> exceeding the inidividual axis' speed/acceleration is sensitive for
> the proper operation of the robot.
>
>
Try using joints_axes branch
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?JointAxesBranch

-- 
Andrew
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Re: [Emc-users] problem setting appropriate speeds in joint and world mode for 6 axis robot with genserkins

[andy pugh]

On 30 April 2015 at 17:23, Christian Stöveken
 wrote:
> When switching to world mode the speed limits from axis 1/2/3 apply for
> X/Y/Z which doesn't make a whole lot of sense to me.

123 or 012?

Are the axes actually angular? I am not sure what difference that
setting makes, but I _think_ it only controls which limits slider /
pins they obey.

-- 
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto

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[Emc-users] problem setting appropriate speeds in joint and world mode for 6 axis robot with genserkins

[Christian Stöveken]

So I found like a day and a half to work on our Mantuec R15 / granite
devices VSD-XE
project again.

When trying to run some gcode (generated with RhinoCAM) I noticed
the robot was only moving very slowly in world mode in one direction (X
axis).

I setup all 6 axis as angular axis with the speed/acceleration settings
tuned
to slightly less than the VSD-XE's can handle.

When switching to world mode the speed limits from axis 1/2/3 apply for
X/Y/Z which doesn't make a whole lot of sense to me.

Is this the intended behaviour?

Any ideas on how I should tackle this problem - keeping in mind that
exceeding the inidividual axis' speed/acceleration is sensitive for
the proper operation of the robot.

For a start I want to operate the robot in world mode because I can easily
generate
gcode for it (abusing it as xyz machine + turn table) with the cam software
at hand.

I intend to use it as 5-axis-continuous mill - but don't have access to the
suitable cam
software yet.
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Re: [Emc-users] Linuxcnc Fest for 2015

[Ron Ginger]

Tormach has signed up as a vendor and I am waiting for them to specify 
the seminars they want to deliver. Jon has said he is willing to do a 
linuxcnc user talk. There is room for more.

Although my personal use is Mach I really want this workshop to maintain 
its broad coverage of hobby CNC as it did in the beginning years. We 
have plenty of space and can accommodate many topics. There are a few 3D 
talks lined up, and a 3d printer build class.

Registration is open now, there is one more day to gain the early 
registration discount, and speakers will also have a $50 discount.

http://TheCNCworkshop.com

ron ginger



> From: John Alexander Stewart

> Ron;
>
> Thank you for this email - I had wondered about the "Mach4" focus of the
> seminars, and wondered about Tormach/MachineKit.io/LinuxCNC seminars to
> balance the sheet, so to speak.
>
>
> John A. Stewart.


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