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nebchmp(at)wcc.net
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 Posted: Sun Apr 22, 2007 6:29 pm Post subject: Kitfox With A Vair Update |
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After only three short flights of 10, 19; and 6 minutes my Fox has been
grounded while I replaced the oil cooler, (replaced the eight row with a
twelve row) and modified the plenum around the oil cooler. I also
redesigned the intake runners to the manifolds. On 4/18 I had a great
flight of 50 minutes. I could have gone longer however the ground crew
thought I was having entirely to much fun for one day. I didn't note
the VSI on take off. Best AS was 90 mph 3170 rpms MAP 25.1. I need to
get to 3400 rpms to get about 100 hp. The oil temp. is still higher
then I want it to be
( 238-248) so I need to clean up the air passage way to improve
cooling. I throttled back to 2550 rpms MAP 17.5 and the AS was 70 mph. I
have a few pounds I can lose, (both from the plane and myself) that
might help the speed a bit. I'm not planning on entering any races
however. Still no pictures, the photographer wasn't around that day.
Later, Norm
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josandt(at)verizon.net
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| Posted: Sun Apr 22, 2007 7:26 pm Post subject: Kitfox With A Vair Update |
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Norm: That's a lot of direct drive RPM's for 90 MPH! What kind of prop are you running on your Kitfox/Corvair and what is the pitch set to? Is it safe to say that you are running a very low pitch?(hence the low top end)? John
From: Norm <nebchmp(at)wcc.net>
Date: 2007/04/22 Sun PM 09:28:27 CDT
To: kitfox-list(at)matronics.com
Subject: Kitfox With A Vair Update
After only three short flights of 10, 19; and 6 minutes my Fox has been
grounded while I replaced the oil cooler, (replaced the eight row with a
twelve row) and modified the plenum around the oil cooler. I also
redesigned the intake runners to the manifolds. On 4/18 I had a great
flight of 50 minutes. I could have gone longer however the ground crew
thought I was having entirely to much fun for one day. I didn't note
the VSI on take off. Best AS was 90 mph 3170 rpms MAP 25.1. I need to
get to 3400 rpms to get about 100 hp. The oil temp. is still higher
then I want it to be
( 238-248) so I need to clean up the air passage way to improve
cooling. I throttled back to 2550 rpms MAP 17.5 and the AS was 70 mph. I
have a few pounds I can lose, (both from the plane and myself) that
might help the speed a bit. I'm not planning on entering any races
however. Still no pictures, the photographer wasn't around that day.
Later, Norm
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
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