KR> torque wrenches

[Edward Spyker]

Sorry, this post got LONG
 
>>Phil said "Believing a torque wrench can have some serious consequences .
i just believed one and set head torque"<<
 
OK I searched the web for this and didn't find a quick answer so I'll shoot 
from the hip and try to trust my memory. Torque is force times distance. It's 
the amount of rotating or twisting force that is created by applying a force 
perpendicular to an axis. The distance from the axis that the force is applied 
multiplies the force. If the torque specified for something like a 1/4 inch nut 
is 24 inch lbs and your wrench is 12 inches in length then you would only have 
to apply 2 lbs of force to the end of the wrench to achieve the 24 inch lbs of 
torque, that is really a very light push. 2lbs times 12inches  =24 inch lbs. If 
you had a torque wrench that measured foot lbs and set it to 24 that would be 
24 ft lbs which would be more than ten times the specified inch lbs 
specification, even pros have been known to make this mistake when hurried and 
inattentive. If you are 
torquing something big like a 7/8 inch spark plug in Continental that calls for 
33 ft lbs then you would have to push 33 lbs against that little 12 in wrench. 
Most ft lb torque wrenches are around 16-18-to 24 inches long. If you are 
pushing on the end of an 18 inch wrench then 18 divided by 12 = 1.5, meaning 
that for every 1 lb of force that you apply to the end of the 18 inch wrench 
1.5 lbs of torque is applied to the hypothetical spark plug; therefore to 
achieve 33 ft lbs of torque with a 18 inch long wrench you would only have to 
apply 22 lbs of force to the end of the wrench (33ft lbs divided by 1.5ft lbs = 
22ft lbs). 22 lbs of force can easily be applied by one arm with a medium push 
without having to brace the other hand against anything. Think about it if you 
go the the gym and pick up a 20lb weight to add to your bar bell you wouldn't 
want to push much harder than that on your 18inch spark plug wrench. In the 
certified aircraft world A
 mechanics are required to use periodically calibrated torque wrenches, they 
keep them in a padded case like some sort of jewelry, and handle them like a 
fragile egg when in use. If a torque wrench is dropped or banged against 
something its calibration should be recertified before it is used again. In the 
experimental world use your best judgement do the math before you torque and 
have a good idea of how hard you should expect to have to push or pull on the 
wrench handle. If you suspect that your torque wrench is a liar and your arm 
isn't calibrated yet then measure your wrench length do a little math and hook 
a good accurate fishing scale around the end of the wrench and pull away on the 
fishing scale.
 
Edward Spyker 
jesj69 (at) yahoo dot com



From: Mark 
To: 'phil brookman' ; 'KRnet' 
Sent: Monday, October 17, 2011 7:18 PM
Subject: RE: KR> torque wrenches 

Racing practice is to use new fasteners when possible (studs, bolts, etc.)
and measure stretch as a backup for torque. You are really trying to measure
clamping force and stretch can be a better indicator of what you are getting
with new studs and bolts of a known grade and quality.

Just a thought

Mark W.
N952MW (res.)

-Original Message-
From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf
Of phil brookman
Sent: Monday, October 17, 2011 1:12 AM
To: KRnet
Subject: KR> torque wrenches 

Believing a torque wrench can have some serious consequences .
i just believed one and set head torque

phill





From: M 
To: KRnet 
Sent: Monday, October 17, 2011 5:20 AM
Subject: Re: KR> Encapsulating

I've heard you can mix rubbing achohal with it and the achohal will
evaporate out after you have spread it.  You might test that on something
first.

Mike Turner
Edgewood N.M.
- Original Message -
From: John Backer
To: KRnet
Sent: Sunday, October 16, 2011 8:05 PM
Subject: Re: KR> Encapsulating


What are the current thoughts on how to thin epoxy to get a good flow?
>
> Dana Overall
>
> Have you tried heat? I have used a hair drier many times to get epoxy to
flow. You might try some samples to see if it does what you would like.
John Backer
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KR> Fly your KR

[Mike Sylvester]

Hey Guys, If your needing a destination this weekend ? SERFI is this weekend in 
Evergreen Al. A great place to be Saturday. Our Birmingham EAA Chapter will be 
working it again this year. See ya there.

Mike Sylvester 
kr2s builder 
Birmingham,AL.

Cell no.205-966-3854  

KR> torque wrenches

[Mark]

Racing practice is to use new fasteners when possible (studs, bolts, etc.)
and measure stretch as a backup for torque. You are really trying to measure
clamping force and stretch can be a better indicator of what you are getting
with new studs and bolts of a known grade and quality.

Just a thought

Mark W.
N952MW (res.)

-Original Message-
From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf
Of phil brookman
Sent: Monday, October 17, 2011 1:12 AM
To: KRnet
Subject: KR> torque wrenches 

Believing a torque wrench can have some serious consequences .
i just believed one and set head torque

phill





From: M 
To: KRnet 
Sent: Monday, October 17, 2011 5:20 AM
Subject: Re: KR> Encapsulating

I've heard you can mix rubbing achohal with it and the achohal will
evaporate out after you have spread it.  You might test that on something
first.

Mike Turner
Edgewood N.M.
- Original Message -
From: John Backer
To: KRnet
Sent: Sunday, October 16, 2011 8:05 PM
Subject: Re: KR> Encapsulating


What are the current thoughts on how to thin epoxy to get a good flow?
>
> Dana Overall
>
> Have you tried heat? I have used a hair drier many times to get epoxy to
flow. You might try some samples to see if it does what you would like.
John Backer
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KR> tip tanks

[Fred Johnson]

Rudi wrote:

"Sakkie's plane with tip-tanks, ZS-UKU, is currently being restored after 
standing for many years, more information available here: 
http://www.avcom.co.za/phpBB3/viewtopic.php?f=100=79408[Fred Johnson] "



This is great. I have been reading Pazmany's article about the PL-1 and it
got me thinking about this on a KR. According to him, they increase wing
efficiency the same as winglets. They also increase the aspect ratio.

Does anyone know if his tip tanks actually held fuel?



Fred Johnson
Reno, NV

KR> tip tanks

[Rudi Venter]

Sakkie's plane with tip-tanks, ZS-UKU, is currently being restored after 
standing for many years, more information available here: 
http://www.avcom.co.za/phpBB3/viewtopic.php?f=100=79408

We still have quite a lot of KR activity here in South Africa with a 
recent revival of many projects, some can be seen here: 
http://www.avcom.co.za/phpBB3/viewforum.php?f=100

Fly safe,
Rudi

On 10/17/2011 8:17 PM, M Blank wrote:
> Fred, sorry my memory is going...Sakkie Halgreen of South Africa, had a 
> KR with tip tanks. A picture is located at 
> (http://n323xl.iwarp.com/blouterwings1.htm). I read years ago on a Carlton 
> Blandford's KR site of this fellow who did lots of mods to the KR design. I 
> think he also had tried a KR with a small seat aft of the pilots/co-pilot 
> station. I believe Sakkie was killed at some point in a crash, I dont 
> remember the date or details. Seems lots of KR activity took place in South 
> Africa in the 90's.
>
> Mike
>

KR> Tip Tanks for KR & Sakkie Green KR

[M Blank]

There is a bit better info on the KR with tip tanks from South Africa here: 
(http://www.avcom.co.za/phpBB3/viewtopic.php?f=100=79408) I thought this may 
be interesting, seems someone I believe its Cartlon, who is restoring Sakkie's 
KR. 

Mike

KR> tip tanks

[M Blank]

Fred, sorry my memory is going...Sakkie Halgreen of South Africa, had a KR 
with tip tanks. A picture is located at 
(http://n323xl.iwarp.com/blouterwings1.htm). I read years ago on a Carlton 
Blandford's KR site of this fellow who did lots of mods to the KR design. I 
think he also had tried a KR with a small seat aft of the pilots/co-pilot 
station. I believe Sakkie was killed at some point in a crash, I dont remember 
the date or details. Seems lots of KR activity took place in South Africa in 
the 90's.

Mike

> From: f...@renotruss.com
> To: kr...@mylist.net
> Date: Mon, 17 Oct 2011 09:48:27 -0700
> Subject: KR> tip tanks
> 
> Has anyone ever done tip tanks on a KR?
> 
> 
> 
> Fred Johnson
> Reno, NV
> 
> 
> ___
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KR> NTSB report brief on 10/6/11 crash

[Rustin Brewer]

 
Here is a link to the NTSB report on October KR-2 crash in Virginia: 
http://www.ntsb.gov/aviationquery/brief.aspx?ev_id=20111006X50957=1
 
I'm a VW flyer with a Cygnet SF-2a (HAPI 1834). I really appreciate your list 
and the wealth of information it provides to anyone. I have some thoughts about 
the crash but airing them does not seem appropriate.
 
Thanks,
 
Rustin Brewer
Vancouver, WA

KR> tip tanks

[M Blank]

Sakki Green?

> From: f...@renotruss.com
> To: kr...@mylist.net
> Date: Mon, 17 Oct 2011 09:48:27 -0700
> Subject: KR> tip tanks
> 
> Has anyone ever done tip tanks on a KR?
> 
> 
> 
> Fred Johnson
> Reno, NV
> 
> 
> ___
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> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html

KR> tip tanks

[Fred Johnson]

Has anyone ever done tip tanks on a KR?



Fred Johnson
Reno, NV

KR> WING SPAR WOOD BENDING

[Fred Johnson]

Brant wrote: 

"Steam quickly heats and moistens the fibers in wood so it may be bent with
out cracking."  

You can also use a small amount of ammonia when you steam, or just use very
hot water with the ammonia. The ammonia speeds the fiber softening up. look
at the FPL (forest products Laboratory report on it. I can email a copy of
it to anyone who wants it.





Fred Johnson
Reno, NV

KR> CopperState Fly In

[Jeff Scott]

KRNetters,

 The Copperstate Fly In is coming up in Casa Grande, AZ this weekend. While I 
won't have the KR there this year, I will be there in my newly finished 
SuperCub (The Grizzly Cub). Please stop by to say hello. Even though I'm flying 
the yellow plane this year, I'll be happy to talk KRs.

 Jeff Scott
 Los Alamos, NM
 N1213W
 N143W

KR> Great Saturday, representing KR

[airgu...@comcast.net]

Thank you for representing us as good folk. Congrats on the awards! 


Paul OReilly 
KR2 Stretched 
N7970K 
Derry, NH 

- Original Message -
From: "Jeff York"  
To: "KRnet"  
Sent: Sunday, October 16, 2011 5:24:26 PM 
Subject: KR> Great Saturday, representing KR 

I just wanted to report that I had a fantastic Saturday and I hope represented 
the KR aircraft and the KRnet to my best. Yesterday I participated in the 
AirFest airshow when it came to my airport, Georgetown Scott County airport in 
Georgetown Kentucky. 

Jeff York 
Georgetown Scott County Airport 
Lexington, KY 
2010 KR Nationals Peoples Choice and Best interior 
2011 Airfest Best Experimental, Best Instrument panel 
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KR> POT OHM OR K?

[Jose Fuentes]

Hi everyone,

does anyone recommend a good POT OHM/K value for use as a dimmer? I got a
10k one and well I have to go to the very end to get it to go on and I have
very little room (very fine turn) to dimm while I have 75% of the turn that
does nothing.

Was trying to remember my electronics information, I think it's the higher
the resistance the more adjustment I will get so if 10k isn't enough maybe
20-30k?

Though I could be wrong, granted they seem to have started out at 10k on the
store I got it from.

Joe
-- 
Jose Fuentes
Founding Father (one of and former Vice Prez) of Capital City.NET User's
Group
Former Microsoft MVP
http://blogs.aspadvice.com/jfuentes

KR> torque wrenches

[Jose Fuentes]

There is alot to be said about tool quality.

You can buy a torque wrench from Harborfreight for 20 bucks or spend 70 at
Sears, there are certain things I will buy at harborfreight and others I
will not (screw drivers, wrenches and ratchets (plus sockets)). As a
mechanic long ago I have nearly busted a knuckle and done alot of hand
damage due to cheap tools that simply can not take alot of pressure (imagine
taking a head bolt off a diesel motor using some Chinese ratchet).

Hammers and other types of tools and power tools I will buy.

There is better, like anything qaulity goes up with price, you can get a
good MAC or SNAP-ON for a 100 or 2.

Joe


> --
> Jose Fuentes
> Founding Father (one of and former Vice Prez) of Capital City.NET User's
> Group
> Former Microsoft MVP
> http://blogs.aspadvice.com/jfuentes
>

KR> Encapsulating

[Dana Overall]

Thanks guys, I knew some on this list would have the answer.  Oscar also 
emailed me off the list and relayed that alcohol works well with water, which 
is in all but the driest of all wood.  You can buy thinned epoxy for this this 
purpose  http://www.epoxyproducts.com/esp155.html but I don't need it by the 
gallon yet.  Alcohol it is...then add some rubbing alcohol to epoxy.it 
that order!!;-)

Dana Overall 

Richmond, KY i39

RV-7 slider "Black Magic" 
Flying..well sorta, useta, kinda
Barrett Precision O 360 A1A
Hartzell C2YR-1BFP/F7497-2 
http://rvflying.tripod.com/blackmagic.jpg
http://www.youtube.com/watch?v=MMi05-WU2D0#GU5U2spHI_4
http://rvflying.tripod.com

do not archive 

> From: phillipmathe...@bigpond.com

> I have been using what your guys over there call rubbing alcohol (
> Mentholated Spirits) for years with great effect, in sealing timber, filling
> pin holes, etc.

KR> Encapsulating

[Phil Matheson]

I've heard you can mix rubbing alcohol with it and the alcohol will
evaporate out after you have spread it.  You might test that on something
first.
--
I have been using what your guys over there call rubbing alcohol (
Mentholated Spirits) for years with great effect, in sealing timber, filling
pin holes, etc.

Phil Matheson.
KR2 VH PKR

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KR> torque wrenches

[Larry H.]

I recommend having your torque wrench certified before a major project. If you 
do this then you usually can believe what it says. I like to take the tension 
off of mine when I am finished using one of them.
JMHO
Larry H.



Believing a torque wrench can have some serious consequences .
i just believed one and set head torque on an engine to find i had over torqued 
it .
phill

KR> torque wrenches

[phil brookman]

Believing a torque wrench can have some serious consequences .
i just believed one and set head torque on an engine to find i had over torqued 
it .
strippped one crankcase thread completly out in flight =  3 hrs  and  helicoil 
sorted that  .
loss of compression coming out of head seal in flight ...

other studs also giving me grief ,,,in all about 8 hrs work  but could also 
have brought me down =  safety issues 
We tested a brand new one right out the box and that was miles out ...
So check them all 

phill





From: M 
To: KRnet 
Sent: Monday, October 17, 2011 5:20 AM
Subject: Re: KR> Encapsulating

I've heard you can mix rubbing achohal with it and the achohal will 
evaporate out after you have spread it.  You might test that on something 
first.

Mike Turner
Edgewood N.M.
- Original Message - 
From: John Backer
To: KRnet
Sent: Sunday, October 16, 2011 8:05 PM
Subject: Re: KR> Encapsulating


What are the current thoughts on how to thin epoxy to get a good flow?
>
> Dana Overall
>
> Have you tried heat? I have used a hair drier many times to get epoxy to
flow. You might try some samples to see if it does what you would like.
John Backer
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