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  #1  
Old 07-18-2014, 11:54 AM
RV3bpilot's Avatar
RV3bpilot RV3bpilot is offline
 
Join Date: Oct 2012
Location: New Ulm, Minnesota
Posts: 260
Smile Corvair Engine

I took some time but I have my Corvair engine running great in my RV3. It's climb rate is like that of a 100 hp. Continental engine but it keeps climbing even at high altitudes because it is turbo charged, I have taken it up to 14,000 ft. the other day without any problems and still had a climb rate of 700 ft. per min..
It's speed it like that of a 125 hp. Lycoming at low altitudes, and like that of a 150 hp. Lycoming at high altitudes.
It took about one year to work out all the issues with different stuff to include how to drive the propeller safely. But now it is just like any other aircraft engine just change the oil and put in fuel.
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New Ulm, MN 56073
RV3b N219BB
294 hours and counting
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  #2  
Old 07-18-2014, 12:05 PM
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DougJ DougJ is offline
 
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Location: Prather, CA
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Let's see some pictures of the install!
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  #3  
Old 07-18-2014, 12:24 PM
David Paule David Paule is offline
 
Join Date: Dec 2009
Location: Boulder, CO
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How much time do you have on it and what sort of prop are you using?

And here's another request for photos.

Dave
RV-3B still on wings....
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  #4  
Old 07-18-2014, 12:38 PM
BillL BillL is offline
 
Join Date: Sep 2007
Location: Central IL
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Corvair - now there is a blast from the past - - I bet it is smoooooth.

Just keep good oil in there and get a good oil analysis program going. Those main bearings are quite small, smaller than the VW of the era.

Yes, Lets see some pictures!!!
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RV-7
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  #5  
Old 07-18-2014, 01:11 PM
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rv7boy rv7boy is offline
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Location: Austinville, Alabama
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Yes, a few photos would answer a lot of questions. I'd be interested in knowing if you went direct drive to the prop or if you have a gearbox. What type of prop? What attention to bearing loads at the prop end of the engine did you provide? Etc., etc.,
We'd like to hear (and see) more.
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RV-7 Wings
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“Certainly, travel is more than the seeing of sights;
it is a change that goes on, deep and permanent, in the ideas of living." Miriam Beard


"It should be added that the sublime beauty of the facture brings within the realm of discourse the substructure of critical thinking. " -using Doug's Art Critique jargon link and my birthday, I get this!
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  #6  
Old 07-18-2014, 02:51 PM
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RV3bpilot RV3bpilot is offline
 
Join Date: Oct 2012
Location: New Ulm, Minnesota
Posts: 260
Default Corvair Install

I had to make my own motor mount and a lot of other stuff to make it fit.
It is direct drive per my homemade parts. The drive hub has a bearing as same as a Lycoming for stability of the prop. and it has a thrust bearing to keep the prop from pulling on the crank.
It is a Catto prop. 66" long 60" pitch counter rotation. It was damaged on my second forced landing so I repaired it using vacuum bagging process and it is working great.
So far I have 112.2 hours on it.
Here are a few pictures of the installation of the motor. Yes it has fuel injection too.
I use Mobil one synthetic oil in it 10-30wt.
The crankshaft is made by Corvair Specialties, it is 4340 steel billet that have been line-bored, undercut pendulums, knife- edge machined, and partially drilled rod journals, all to keep the weight down to a mere 2oz. heavier than the original crankshaft. The crankshafts have also been heat treated, shot peened, nitrided, and micro-polished.






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Robin Mckee
New Ulm, MN 56073
RV3b N219BB
294 hours and counting

Last edited by RV3bpilot : 07-18-2014 at 03:14 PM. Reason: spelling
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  #7  
Old 07-18-2014, 03:08 PM
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Larry DeCamp Larry DeCamp is offline
 
Join Date: Apr 2010
Location: Clinton, Indiana
Posts: 565
Default Class Act

This clearly shows the level of knowledge, expertise and energy that populates VAF. Way to go !
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Larry DeCamp
RV-3B flying
RV-4 fastback project in the shop
Clinton, IN
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  #8  
Old 07-18-2014, 03:14 PM
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Mark Dickens Mark Dickens is offline
 
Join Date: Apr 2012
Location: Collierville, TN (KFYE)
Posts: 821
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This is true experimental aviation! Congratulations!
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RV-8 #81077 Super Slow Build
Titan IOX-370, Dual P-Mags, AFP FM200A FI, Sensenich GA Prop
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  #9  
Old 07-18-2014, 03:29 PM
BillL BillL is offline
 
Join Date: Sep 2007
Location: Central IL
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Well Done!!

Nice prop adapter design and build, equally nice mod to the heads to make them individual ports, and and and EFI! Too much to comment on!

This sets a pretty high bar for us . .
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RV-7
Op Lims in hand 12-7-17
1st Flight 1-27-18
2017 Dues Paid
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  #10  
Old 07-18-2014, 03:58 PM
David Paule David Paule is offline
 
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Location: Boulder, CO
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And turbocharged. I'm very impressed. Well done!

Dave
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