KR> REALLY DUMB CRANK QUESTION

[Tony King]

Hi Barrett,

One significant factor, regardless of which end it's being driven from, is
that the torsional loads imposed on the crank in an automotive application
are vastly smaller than those imposed by a propellor spinning at 3000 rpm.
 I know there is plenty of experience in the VW world as to the pros and
cons of driving the prop from one end or the other.  I suspect the same
factors would apply to Corvairs, except probably more so due to the longer
crank.

They're clearly getting better, but Corvair engines are still very much at
the experimental end of the spectrum - with a capital E!  For some people
the experimentation is why they do it.  Fortunately for me, some of the
benefits of the Corvair (parts availability, low cost, etc.) don't apply in
Oz since they were never sold here, so I'm not tempted to follow that path.

Cheers,

Tony King
Queensland Australia

On 27 December 2011 11:28, Barrett  wrote:

> Ever since I have given real thought to using a Corvair engine in my
> project
> and looking thru everything about them that I can find, I've had one really
> burning question that I have WANTED to ask, and haven't. In light of Mark's
> 3rd engine failure, I just HAVE to ask this question now-
>
> Q:-Why is everyone attaching the prop to the wrong end of the engine? The
> engine was obviously meant to "drive" the transmission (in the car) from
> the
> other end. The crankshaft was designed to impart it's forces towards the
> back of the engine, not the front. The crankshaft was designed to run a few
> rather light accessories on the front, but the real work is out the read of
> the engine.
> Q:-Has anyone used the other end to power a prop?
> Q:-Are we trying to go "in" thru the "out" door?
>
> I guess it was fate or whatever, but as soon as I made my post today about
> having picked up my two Corvair engines today, then Mark posted about his
> third broken crank. I had been looking closely at using an O-235 engine
> instead, but after listening to all the pro's and con's, I passed on the
> O-235 engines and someone else got them. Had I known about Mark's engine 2
> weeks ago, I might have had the 0-235 engines instead of the Corvair
> engines.
>
> Marks point about maybe getting someone to manufacture a crank for the
> 'Vair
> engine is a good and valid one, and I think is one that should be looked
> into. On the other hand- IF SOMEONE developed an adapter to run the prop
> from the other end of the crank, wouldn't this be essentially the same
> thing?
>
> OK-OKI will admit to being "new" to the use of a Corvair engine in a
> plane and new to the list. I'm sure this topic has already come up at least
> once before, but may I ask to be humored on this topic and bring it up for
> a
> discussion? I mean all of our lives depend on this, so it seems it would be
> a viable topic?? Oh yeahI am "new" to Corvair engines in aircraft, but
> I
> have a WHOLE LOT of experience in building (high powered supercharged)
> Corvette engines, so I'm not an engine dynamics dummy.
>
> -Barrett
> (Shields raised and awaiting incoming fire! :-)
>
> +++
> I've got a flying story for you, but I'm not sure if it'll be
> inspirational!
>
> If nothing else though, it shows how lots of deadstick landing practice
> (and
>
> prior experience) can pay off .  See http://www.n56ml.com/corvair/break3/
> for the details.  My apologies in advance for the disconcerting content.
>  No
>
> condolences required...I'm over it.
>
> Again, my apologies to the Corvair Community...
>
> Mark Langford
> ML at N56ML.com
> website at http://www.N56ML.com
>
>
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> 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> flying stories ?

[Tony King]

Glad to hear you're OK Mark.  I'm sure I won't be the only one watching
with interest to see what your next experimental is like - and what ideas
we can incorporate into our own projects.

Cheers,

Tony King
Queensland Australia

I've got a flying story for you, but I'm not sure if it'll be inspirational!
> If nothing else though, it shows how lots of deadstick landing practice
> (and
> prior experience) can pay off .  See http://www.n56ml.com/corvair/break3/
> for the details.  My apologies in advance for the disconcerting content.
>  No
> condolences required...I'm over it.
>
> Again, my apologies to the Corvair Community...
>
> Mark Langford
> ML at N56ML.com
> website at http://www.N56ML.com
> 
>
>

KR> Re:Aluminum Protection

[smwood]

For aluminum protection: Watch the EAA Hints for Homebuilders video and do 
what Brian Carpenter says.  It works!
http://www.eaavideo.org/channel.aspx?ch=ch_hints

Anodize is the best (and pricey) aluminum treatment, but next best is 
alodine and doable by anyone right on your work bench at home.
Zinc chromate is a good primer for a finish coat of a spray paint, but next 
to worthless for aluminum metal protection.  Powder coat is a great looking 
finish and will provide excellent protection as long as the surface does not 
crack or get scratched to the bare metal.  Corrosion can then happily eat 
away under the best looking part and you will not know it until the paint 
can no longer support the load that the metal used to carry.

Sid Wood
Tri-gear KR-2 N6242
Mechanicsville, MD, USA
smw...@md.metrocast.net


I'd also appreciate any specific suggestions for aluminum protection.
 From Sonex builders' sites I seem to remember there's a zinc chromate
(?) spray that people use.  What do you think is best?

Thanks for any suggestions...

Seth

KR> REALLY DUMB CRANK QUESTION

[Mike Sylvester]

Barrett, The Corvair guys are using the drive end of the engine. The picture on 
Mark's email was the back side. Apparently it broke on the back side of the 
crank.

Mike Sylvester 
kr2s builder 
Birmingham,AL.

Cell no.205-966-3854

> From: barret...@comcast.net
> To: corvaircr...@mylist.net; kr...@mylist.net
> Date: Mon, 26 Dec 2011 18:28:32 -0700
> CC: 
> Subject: KR> REALLY DUMB CRANK QUESTION
> 
>  
> Q:-Why is everyone attaching the prop to the wrong end of the engine? 
> 
> +++
> 
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> 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> REALLY DUMB CRANK QUESTION

[Barrett]

Ever since I have given real thought to using a Corvair engine in my project
and looking thru everything about them that I can find, I've had one really
burning question that I have WANTED to ask, and haven't. In light of Mark's
3rd engine failure, I just HAVE to ask this question now-

Q:-Why is everyone attaching the prop to the wrong end of the engine? The
engine was obviously meant to "drive" the transmission (in the car) from the
other end. The crankshaft was designed to impart it's forces towards the
back of the engine, not the front. The crankshaft was designed to run a few
rather light accessories on the front, but the real work is out the read of
the engine.
Q:-Has anyone used the other end to power a prop?
Q:-Are we trying to go "in" thru the "out" door?

I guess it was fate or whatever, but as soon as I made my post today about
having picked up my two Corvair engines today, then Mark posted about his
third broken crank. I had been looking closely at using an O-235 engine
instead, but after listening to all the pro's and con's, I passed on the
O-235 engines and someone else got them. Had I known about Mark's engine 2
weeks ago, I might have had the 0-235 engines instead of the Corvair
engines.

Marks point about maybe getting someone to manufacture a crank for the 'Vair
engine is a good and valid one, and I think is one that should be looked
into. On the other hand- IF SOMEONE developed an adapter to run the prop
from the other end of the crank, wouldn't this be essentially the same
thing?

OK-OKI will admit to being "new" to the use of a Corvair engine in a
plane and new to the list. I'm sure this topic has already come up at least
once before, but may I ask to be humored on this topic and bring it up for a
discussion? I mean all of our lives depend on this, so it seems it would be
a viable topic?? Oh yeahI am "new" to Corvair engines in aircraft, but I
have a WHOLE LOT of experience in building (high powered supercharged)
Corvette engines, so I'm not an engine dynamics dummy.

-Barrett
(Shields raised and awaiting incoming fire! :-)

+++
I've got a flying story for you, but I'm not sure if it'll be inspirational!

If nothing else though, it shows how lots of deadstick landing practice (and

prior experience) can pay off .  See http://www.n56ml.com/corvair/break3/ 
for the details.  My apologies in advance for the disconcerting content.  No

condolences required...I'm over it.

Again, my apologies to the Corvair Community...

Mark Langford
ML at N56ML.com
website at http://www.N56ML.com

KR> flying stories ?

[Gary Robison]

WOW.

Glad to hear your OK Mark...

I am just finishing up my new man cave and as you know
the wood "kit" was pick up during the last KR gathering.

I have gathered up three Corvair engines but I will await the
out come of this latest event before moving forward with them.


Mark, keep us informed about the crank  failure and about your
thoughts on your new project.



- Original Message - 
From: "Mark Langford" 
>
> I've got a flying story for you, but I'm not sure if it'll be 
> inspirational!
> Mark Langford
> ML at N56ML.com

KR> flying stories ?

[Mark Langford]

Mike Sylvester wrote:

>>Where are all the inspirational flying stories that keeps the fires 
>>burning in all of us builders?  Come on guys, I know someone out there is 
>>doing more than sitting on the couch this winter. I've really enjoyed 
>>reading the exploits of the "Time machine, N56ML" and all the others ...<<

I've got a flying story for you, but I'm not sure if it'll be inspirational! 
If nothing else though, it shows how lots of deadstick landing practice (and 
prior experience) can pay off .  See http://www.n56ml.com/corvair/break3/ 
for the details.  My apologies in advance for the disconcerting content.  No 
condolences required...I'm over it.

Again, my apologies to the Corvair Community...

Mark Langford
ML at N56ML.com
website at http://www.N56ML.com

KR> steel and aluminum protection--suggestions?

[Seth and Karen Jersild]

Thank you all, for your replies.  The home-made powder coating setup is 
intriguing, but I think I'll keep it simple and go as follows:

Aluminum:  Alumiprep treatment.  Dry well.  Followed promptly by zinc 
chromate.
Steel:  Clean well with acetone, then soap and water, then flush with 
lots of water, then dry, followed promptly by zinc chromate.

It also appears I can use paint directly on zinc chromate if I wanted to.

If this approach sounds problematic, please let me know.

Again, thanks for your help!

-Seth


On 12/26/2011 1:32 PM, Dave_A wrote:
> Alodyne works for aluminum
>
> epoxy primer or zinc-chromate will work for both.
>
> On 12/26/2011 10:38 PM, Dave McCauley wrote:

KR> interface from engine to note book computer

[Eric j Pitts]

Look at engine managemet for boats will cost less, sea gauge comes to mind.

On Sun, Dec 25, 2011 at 10:11 AM, warrong2  wrote:

> I have a hp notebook using APIC software which allows engine monitoring to
> be
> setup on the screen.  Emailed the company for info on where I can get an
> interface  for this setup. So far no response from company but it is early
> yet.
> Is there any unit out there that can easily interface engine sensors to my
> computer with out costing the almost $1000.00 they seem to be asking for
> specialized ones. The system uses a gps which I already set up. Works
> great in
> my vette but Thanks for any info guys.
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>



-- 
Eric Pitts
Terre Haute, Indiana
HTTP://eric.pitts.mystarband.net/KR2S.html

"Life should NOT be a  journey to the grave with the  intention of
arriving  safely in an attractive and well preserved body, but  rather to
skid in sideways, chocolate in one hand, body thoroughly used up, totally
worn  out and screaming "WOO HOO what a ride!"

KR> steel and aluminum protection--suggestions?

[Dave_A]

Alodyne works for aluminum

epoxy primer or zinc-chromate will work for both.

On 12/26/2011 10:38 PM, Dave McCauley wrote:
> To protect aluminum, try Alodine, a surface treatment that provides a layer
> of corrosion resistance.  You just paint it on.  Paint will bond to it.
>
> If you're willing to do a little chemistry and have a 12 volt battery
> charger, try anodizing your aluminum parts.  The advantage of this process
> is it's cheap - only thing you buy is battery acid and some aluminum wire.
> You can also dye your finished parts any color you like.  Down side is that
> working with acid is troublesome and messy.
>
> Dave McCauley
>
> -Original Message-
> From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf
> Of Craig Williams
> Sent: Sunday, December 25, 2011 6:03 PM
> To: KRnet
> Subject: Re: KR>  steel and aluminum protection--suggestions?
>
> Powder coat can be cheap if done yourself.
>
> Here is my system:  http://www.kr2seafury.com/2.html
>
> www.harborfreight.com/ has all you need but the oven
>
> OR I use the Craftsman gun...Ebay Item number:320695170539
>
> Some folks believe it covers to good and flaws in welds will not appear if
> powder coated but I think the hard shell finish will crack if your welds
> crack so I powder coated my gear.
>
> MERRY CHRISTMAS
>
> Craig
> www.kr2seafury.com
> Corvair 2780
>
>   
>
>
> 
>   From: "bdazzca...@aol.com"
> To: kr...@mylist.net
> Sent: Sunday, December 25, 2011 5:25 PM
> Subject: Re: KR>  steel and aluminum protection--suggestions?
>
> its kinda the expensive route but I plan on powder coating mine.
>
> David Swanson
> Tucson AZ
>
>
> In a message dated 12/25/2011 3:38:52 P.M. US Mountain Standard Time,
> jersi...@gmail.com writes:
>
>
>>Hello all, and Merry Christmas--
> I just received my wing attach  fittings from the shop and am wondering if
> any of you have specific  recommendations for protecting 4130
> steel--specific types of paint or  protective coatings that you particularly
> like and trust.
>
> I'd also  appreciate any specific suggestions for aluminum protection.
>> From  Sonex builders' sites I seem to remember there's a zinc chromate
> (?) spray  that people use.  What do you think is best?
>
> Thanks for any  suggestions...
>
> Seth
>
> ___
> Search  the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to  UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see  other KRnet info at  http://www.krnet.org/info.html
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>
>
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> 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> steel and aluminum protection--suggestions?

[Dave McCauley]

To protect aluminum, try Alodine, a surface treatment that provides a layer
of corrosion resistance.  You just paint it on.  Paint will bond to it.

If you're willing to do a little chemistry and have a 12 volt battery
charger, try anodizing your aluminum parts.  The advantage of this process
is it's cheap - only thing you buy is battery acid and some aluminum wire.
You can also dye your finished parts any color you like.  Down side is that
working with acid is troublesome and messy.  

Dave McCauley

-Original Message-
From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf
Of Craig Williams
Sent: Sunday, December 25, 2011 6:03 PM
To: KRnet
Subject: Re: KR> steel and aluminum protection--suggestions?

Powder coat can be cheap if done yourself.

Here is my system:  http://www.kr2seafury.com/2.html

www.harborfreight.com/ has all you need but the oven

OR I use the Craftsman gun...Ebay Item number:320695170539

Some folks believe it covers to good and flaws in welds will not appear if
powder coated but I think the hard shell finish will crack if your welds
crack so I powder coated my gear.

MERRY CHRISTMAS

Craig
www.kr2seafury.com
Corvair 2780

 



 From: "bdazzca...@aol.com" 
To: kr...@mylist.net
Sent: Sunday, December 25, 2011 5:25 PM
Subject: Re: KR> steel and aluminum protection--suggestions?

its kinda the expensive route but I plan on powder coating mine.

David Swanson
Tucson AZ


In a message dated 12/25/2011 3:38:52 P.M. US Mountain Standard Time,
jersi...@gmail.com writes:


>  Hello all, and Merry Christmas--

I just received my wing attach  fittings from the shop and am wondering if
any of you have specific  recommendations for protecting 4130
steel--specific types of paint or  protective coatings that you particularly
like and trust.

I'd also  appreciate any specific suggestions for aluminum protection.  
>From  Sonex builders' sites I seem to remember there's a zinc chromate
(?) spray  that people use.  What do you think is best?

Thanks for any  suggestions...

Seth

___
Search  the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
to  UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
please see  other KRnet info at  http://www.krnet.org/info.html
___
Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
please see other KRnet info at http://www.krnet.org/info.html
___
Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
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please see other KRnet info at http://www.krnet.org/info.html

KR> Re: KRnet Digest, Vol 353, Issue 355

[robert7...@aol.com]

Seth,

I just used the zinc chromate spray can on my wing attach fittings as  the 
primer then hit it with a black rustolem for the final coat. Works  fine.

Rob Schmitt
N1852Z



In a message dated 12/25/2011 11:00:57 P.M. Central Standard Time,  
krnet-requ...@mylist.net writes:

From:  Seth and Karen Jersild 
Subject: KR> steel and  aluminum protection--suggestions?
To: kr...@mylist.net
Message-ID:  <4ef7a60b.8000...@gmail.com>
Content-Type: text/plain;  charset=ISO-8859-1; format=flowed


> Hello all, and Merry  Christmas--

I just received my wing attach fittings from the shop and  am wondering 
if any of you have specific recommendations for protecting  4130 
steel--specific types of paint or protective coatings that you  
particularly like and  trust.

KR> Spinner installation

[Dan Heath]

I needed to cut my Vans 13" spinner for installation with the Sensenich 54 X
54 prop on the Corvair.  In the past, I used a Profile Copy tool, but could
not find mine and all I could Google up, were not deep enough.  So I decided
to make one.  Here are a couple pics of it and the installed spinner.  They
are the first three in the thumbnails.  As always, click on the pic for a
full size view.



http://krbuilder.org/CorvairInstallation/index.html



See N64KR at   http://KRBuilder.org - Then click on
the pics 

See you at the 2012 - KR Gathering in Mt. Vernon, Il - MVN - 40th
Anniversary

There is a time for building and it is almost over.

Daniel R. Heath - Lexington, SC