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Corvair engine site needed
I thought I had bookmarked the site where a gent had all kinds of data and
sources for Corvair engines for adaptation to aviation. Now I can't locate that site. Hope someone one can help me find any Corvair aviation engine site. in advance. . .thanks. PS. Is 100 hp about max one can get out of a Beetle 4 cyc opposed air cooled engine w/o turbo charging? |
#2
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Corvair engine site needed
On Nov 30, 2:06*pm, "Pintlar" wrote:
PS. *Is 100 hp about max one can get out of a Beetle 4 cyc opposed air cooled engine w/o turbo charging? If by "100 hp" you mean "about 42 horsepower maximum continuous," then I think you're in the ballpark. See the R.S. Hoover blog for details. Thanks, Bob K. |
#3
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Corvair engine site needed
Pintlar wrote: I thought I had bookmarked the site where a gent had all kinds of data and sources for Corvair engines for adaptation to aviation. Now I can't locate that site. Hope someone one can help me find any Corvair aviation engine site. in advance. . .thanks. PS. Is 100 hp about max one can get out of a Beetle 4 cyc opposed air cooled engine w/o turbo charging? You will get a lot of opinions about this. Look a aircraft that can use a VW or an O200 and compare performance. Q2 vs. Q200 is one. My own opinion is that a VW can produce about 50hp continuously and reliably. Anything over this and you start with valve problems and cracked cases. Look at Great Plains http://www.greatplainsas.com/. Perhaps the exception is Limbach http://www.limflug.de/index.php?page=homepage&lang=eng but you'll pay for it. Remember that talk is cheap. Rutan wanted about 65hp for the vari-eze. He started with a VW but switched to a C85 after a few bad experiences. He never designed an airplane for a VW again. |
#4
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Corvair engine site needed
"Pintlar" wrote in message
... I thought I had bookmarked the site where a gent had all kinds of data and sources for Corvair engines for adaptation to aviation. Now I can't locate that site. Hope someone one can help me find any Corvair aviation engine site. in advance. . .thanks. PS. Is 100 hp about max one can get out of a Beetle 4 cyc opposed air cooled engine w/o turbo charging? To answer your first question: http://www.flycorvair.com/ As to the second, 100 hp is way more than you can get from the VW. Actually, I have had my dissagreements with Veeduber over the true figure--because I am willing to consider maximum continuous power as a percentage of maximum take-off power and also because I am willing to suppose that maximum continuous power can be increased slightly (possible as much as 10%) by the use of a cooling fan to augment the cooling pressure. But I would personally forget about 100 hp from a VW, and would not personally consider anything that ordinarily needed more than 45 hp from a VW for extended periods during the climb. Peter |
#5
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Corvair engine site needed
I bet the Honda Civics and some of the Subarus have some pretty neat
light engines in them. The past decade or two's "rice rocket" obsession in car customizing should have some neat impact on light, powerful engines and parts available to the airplane homebuilder. |
#6
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Corvair engine site needed
"David E. Powell" wrote in message
... I bet the Honda Civics and some of the Subarus have some pretty neat light engines in them. The past decade or two's "rice rocket" obsession in car customizing should have some neat impact on light, powerful engines and parts available to the airplane homebuilder. Keep in mind that most of those super hot little engines are run at full power for applications similar to drag racing. Presuming that they can "last" that way, 50 hours is likely to be a very old engine. Just so you know, I was a long time advocate of automotive conversions and I really do still like a lot of them; but, like so many of us, I am getting old--to the point that, if I do finally get to build, I am likely to chose something like an RV-9 and a Lycoming O-235. The problem is that there are a couple of old rules of thumb--that still seem to work pretty well--and the RV-9 has replaced the Tailwind, the Vari-EZ, and a couple of others as the established design that comes closest to meeting or beating the probable performance and efficiency of everything on my personal scratch pad. Now, admittedly, there are still a few designs on that scratch pad that are a lot faster--and a few that would probably be more fun including feeding my personal pride--but I still have to admit to myself that "dispatch reliability" is a very real component of both performance and efficiency, and I also know that those old type certified "dynosaur" engines can run as lean as you please below about 60 percent power--and the RV-9 have very good published numbers at 55 percent. When you want to really cover the distance, for those few long trips per year, you just rev it up and pour on the fuel. Still not super fast; but fast enough to be a seroius contender! That's just the real world as I see it. Peter |
#7
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Corvair engine site needed
On Nov 30, 4:06*pm, "Pintlar" wrote:
I thought I had bookmarked the site where a gent had all kinds of data and sources for Corvair engines for adaptation to aviation. Now I can't locate that site. Hope someone one can help me find *any Corvair aviation engine site. in advance. . .thanks. PS. *Is 100 hp about max one can get out of a Beetle 4 cyc opposed air cooled engine w/o turbo charging? Check out the following sites for Corvair info. home.hiwaay.net/~langford/corvair/ www.flycorvair.com www.billclapp.com www.flywithgus.com www.fly5thbearing.com www.corvaircraft.com Just about everything you need to know can be found on these sites. Enjoy Neal |
#8
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Corvair engine site needed
On Dec 4 2009, 6:41*pm, "David E. Powell"
wrote: I bet the Honda Civics and some of the Subarus have some pretty neat light engines in them. ... I believe the Civic CVCC engines have had cast iron blocks and they may still be cast iron. Subarus were always water cooled and still are, right? I am surprised that motorcycle engines, like the BMW footwarmers, are not a popular starting point for conversions. I'm sure there are good reasons for that, just don't know what they are. -- FF |
#9
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Corvair engine site needed
Fred the Red Shirt schreef:
I am surprised that motorcycle engines, like the BMW footwarmers, are not a popular starting point for conversions. I'm sure there are good reasons for that, just don't know what they are. Whatever the reasons, they must depend on local factors, such as availability of engines, spares, workmanship. Here in tiny Belgium I hear about spreading use of a BMW bike engine conversion. http://www.asa-be.com/images/PhotoGa...G01/OO-G23.JPG shows an example - observe the extra cowling width, and the very long exhaust pipe. |
#10
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BMW engine for ultralight (was: Corvair engine site needed)
jan olieslagers schreef:
Fred the Red Shirt schreef: I am surprised that motorcycle engines, like the BMW footwarmers, are not a popular starting point for conversions. I'm sure there are good reasons for that, just don't know what they are. Whatever the reasons, they must depend on local factors, such as availability of engines, spares, workmanship. Here in tiny Belgium I hear about spreading use of a BMW bike engine conversion. http://www.asa-be.com/images/PhotoGa...G01/OO-G23.JPG shows an example - observe the extra cowling width, and the very long exhaust pipe. Can't be sure but might well be from this place: http://www.takeoff-ul.de/ (and good luck with the Teuton lingo...) |
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