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Large Engines Discuss Engines Used on Giant Scale Aircraft. Gas/Glow, as long as they're big!

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Old 03-20-2005, 09:30 AM   #1
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Old Quadra questions

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I have an old Quadra which I think is a 35. This engine was purchased new directly from Ron Shettler back in the mid to late 70's if I recall. It has never been run and has been sitting in storage wrapped in a towel for that entire time.
The only ID marks I can find on it are the following:
On the rear of the crankcase "MADE IN CANADA 1000010"
On the bottom of the crankcase "MADE IN CANADA" with a 79 in a circle
The carb is a Walbro with the numbers 58 5-78 (May 1978?)
On the flywheel is "MADE IN USA" and "09071" and "8 24"
It has a magneto on the front and a Champion RCJ-8 plug.
It has about an inch of crankshaft protruding from the rear of the crankcase.
The cylindar and piston appear to be in good shape still. Nice and shiny and the engine has reasonable compression.
My questions are..
What is it? Quadra V35?
What prop should I use with it for say a 1/4 scale Cub or TCraft?
What fuel mix? 50-1?
What kind of breakin will it need.
Should I switch it to solid state ignition and if so what would be a good replacement ignition for it?
Anything else I should know about it?

Thanks -Rob-
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Old 03-20-2005, 10:43 AM   #2
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I have seen and ran many quadras, all were good running basic gas engines.
I've seen the old point version run as good as the newer solid date ignition quadra's.

Everybody uses their favorit oil ratio - 25: 1. 40:1 50:1. all the wya to 100 to 1.
I used an Zenoah oil that comes it a pouch, one pouch to one gallon, works aout to 82.5 to 1, works for me.
I would start with an 18x8 prop.

no tbreakin required, no one breaks in their gas chainsaw, I think.

don't know what yyour v35 means, their were 35, 40, 42, that used the same basic cylinder and case.

run it and see what you think.
hope this helps & good luck
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