STC and SB needed for A65 to A75 conversion

Everything about your Aeronca, not Chief or Champ or Sedan specific.
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flychamp
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STC and SB needed for A65 to A75 conversion

Post by flychamp » Fri Mar 23, 2018 12:54

Need what it take for A65 to A75 conversion.
Engine is down for rebuild and this is an option I want to learn about
and whether it is worth the dollars and effort. would like the increase in ROC
but need to weigh the data.

thanks flychamp

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rkittine
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Re: STC and SB needed for A65 to A75 conversion

Post by rkittine » Fri Mar 23, 2018 14:36

I would give Bill Pancake or Don Swords a call. I think there is some kind of service letter rather than an STC. If I am not thinking about the wrong engine (C-75 to C-85?) it requires opening up the oil circulation holes, a prop change and a carburetor jet change.

Bob
Robert P. Kittine, Jr.WA2YDV
West Nyack Aviation, L.L.C.
New York, New York 631-374-9652
rkittine@aol.com

Paul Agaliotis
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Re: STC and SB needed for A65 to A75 conversion

Post by Paul Agaliotis » Fri Mar 23, 2018 23:35

I would suggest not doing the conversion. By the time you get the small propeller installed to get the RPM needed for 75HP it's too small to pull the plane around. That's why not many planes were equipped with that engine.

It requires different valves, pistons and small pins using a different small end bearing and drilled rod caps.

If you want better performance install the C85 using the Aeronca Service Letter.

The A75 is marketing horsepower, don't waste any time or money on it.
Paul
Mailing Adress : Paul Agaliotis 2060 E. San Martin, San Martin,Calif. 95046

flychamp
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Re: STC and SB needed for A65 to A75 conversion

Post by flychamp » Tue Mar 27, 2018 14:42

Thanks to:

Bob and Paul.
good information
I forgot about calling Bill Pancake. He's forgot more about Champs than I'll ever know.

flychamp

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