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Old December 21st 07, 02:30 AM posted to rec.aviation.homebuilt
Ron Webb
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Posts: 39
Default Engine configuration

Thanks for the link. It had been a while since I had looked at the Contact!
web site.

The Belted Air Power belt drive is very similar to the Blanton drive. I'm
sure I'd rather buy it than build it. I'd heard they weren't selling the BAP
unit anymore. Anybody know?

I like the info in the old plans because it is one of the few cases I've
seen where a certificated engine was removed from a certificated aircraft,
then a properly converted auto engine was installed in it's place - with
everything on both sides weighed, and pictures of the scale. I've not seen
much with better first hand knowledge of weights. And nothing much has
changed.

I have made a collection of similar info, from every source I can find,
including a few of my own weights and measures. I still have the file
somewhere...I think.

As for the fuel burn info - that is not even in doubt! You can't run an air
cooled engine at the Stoicheometric point. Anybody with a pilot's license
will tell you that you run rich of peak, or get used to paying for valve
jobs among other things. Not so with a water cooled engine. Keeping the
mixture EXACTLY at stoich is the whole purpose of an Electronic Fuel
Injection system. I DO know something about that.

An engine running at Stoich 14.7:1 fuel air mixture WILL get better mileage
than one getting the same power at 10:1 mixture. How could it be otherwise?






"cavelamb himself" wrote in message
...
Ron Webb wrote:
Ron, how about share with us where you got you information?



I got the information from the set of very old V6 STOL plans I bought a
few years ago off of EBay.

Paid $75. That's WAYYY out of character for me! It was worth it though.
Among other things, there is a blueprint that shows how to convert a
PA-22 to a taildragger without the mods to the undercarriage. Just mod
the gear to sweep forward. My PA-20 was converted like that, so having
the drawing is a good thing.

There are perhaps 75 pages of drawings, and 75 pages of text. Covers
fuselage mods, wing mods, and converting the engine.

I'd share the info if I could get permission from his heirs...



That's about what I expected.


Here, update thyself...

http://www.contactmagazine.com/