Stuka Stunt Control Line Forum
Archive, 2000–2021 · recovered from the Internet Archive
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GMA McGas, McCoys

Stuka Stunt Main Forum · 4 of 4 known posts recovered

Bill Little · Nov 20, 2004 12:53 PM

#0 source
LAST EDITED ON Nov-20-04 AT 02:56 PM (CST)
 
Hi all,
I remember talking to George years ago about his McGas engines. He had ran out of 40 parts by then, and I didn't have a 40 at the time.
Who out there can speak to the performance, etc., of these?
I know he did a good bit of work on the conversion. I remember he did some things to the bushing, etc..
Thanks!
Bill <><


When the character of a man is not clear to you, look at his friends.
Japanese Proverb

wmiii · Nov 20, 2004 03:44 PM

#1 source
LAST EDITED ON Nov-20-04 AT 03:55 PM (CST)
 
Hey Bill, I have 3 of the little beasts, all are barely broke in.
They are well behaved, start within 2-3 flips, The first few runs
where on a 9-4 rev up at a fast 4 cycle, 5%-28% mix, excellant seal
and compression. George said he lost his butt on them. Chromed crank
& crank pin, chromed wrist pin (that what george said) and chromed
sleeve. He did acknowdge that some where sent back because of a poor
seal between the crank shaft and the case bearing, mine are excellant.

Walter

I forgot nylon pads on the wrist pin,crank pin and a nylon washer in
back of the thrust washer.

Bill Little · Nov 20, 2004 08:13 PM

#2 source
Thanks Walter,
I also received an email from Kiwi (thanks).
I have never seen one in person, but I have always wondered about them. I understand that they are set up to be much longer lasting, and "speced" to be as good as a McCoy can get. I just might have to get one, one of these days!
Bill <><


When the character of a man is not clear to you, look at his friends.
Japanese Proverb

Rustler · Nov 21, 2004 01:24 PM

#3 source
Ed Southwick used these engines in his Skylark and Lark designs? He is recorded as having "factory specials" which were a cut above the average motor, (unless you got a 1 in a 1000!). I reckon any FI Red Head McCoy done by GMA would be the equal or better than Ed's., and would be an excellent stunt motor, a real Rolls Royce in fact!

Ian R.