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josandt(at)verizon.net
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 Posted: Tue Jun 05, 2007 7:09 pm Post subject: Anybody using a Corvair Engine? |
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Thomas, I tend to agree with Norm. The KF7 is another 1550 GVW plane designed to take a larger engine, up to an O-200. If I were building a 1200 lb plane, I probably would have gone with a VW, another simple design - like a mini-Corvair but without the hydraulic valves. VW engines are probably the only engines simpler than the Corvair to rebuild. I will let you know when I get mine flying. I'm also hoping that Norm will post stats for his bird once he gets back into the air! Good Luck, John
John Sandt KF7 builder / Tri-gear / Corvair / BRS / Ridgecrest, CA
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nebchmp(at)wcc.net
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| Posted: Thu Jun 07, 2007 4:03 am Post subject: Anybody using a Corvair Engine? |
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Thomas,
I took some measurements yesterday. As you know the firewall footwells
of the S5 extends into the engine compartment so has to be considered
when mounting the engine as to ease of working behind the engine.
Firewall ( measured from foot well) to front of engine mount 24 3/4".
Firewall ( no footwell involved) to front of ring gear 27 3/4".
Firewall to center of harmonic balancer at rear of engine 5 3/4 "
Bottom of firewall to center line of engine 16". I believe 17" is
recommended but mounted at 16" in order to keep the front starter
shoulder as low as possible. This still requires a cowl modification .
Center of prop shaft 42 5/16" ( aircraft leveled) from the floor. I
used a S5 Congenital cowl from Skystar. I hope these measurements
will be of some use to you. Norm
Norm Beauchamp
S5 1550
Corvair, Warp Drive two blade
San Angelo Tx.
tleed wrote:
| Quote: |
Norm,
I have a question for you: what's the distance from the firewall to the front shoulder or plane of the motor? Or from the firewall to the inside rear wall of the cowl? What I'm looking for is whether a cowl made to clear a Great Plains VW will clear the Corvair front-to-back. Were you able to use a factory Kitfox cowl, or did you have to fabricate from scratch or lengthen someone else's pre-made cowl? If so, whose?
If my info is correct, Great Plains' cowl will clear the Corvair with room to spare on the sides, but I don't know if it will clear length-wise.
Again, I know you have a V and I have a IV, so I'd need to compare the longitudinal firewall-forward dimensions of the two designs, but one thing at a time...unless you know those dimensions, too.
Thomas
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Kitfox Model IV-1200
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