how did Quadra put the size of their engines on them. I have one and can't see any markings????[]

I hate calling guys honey:

My older Q-35 had a sticker on the face of the mag rotor and I thought a very small size stamping on a side below the fins. Can't check for sure since I traded it for a G-38.

Oops, after 20+ years I remembered I had a parts 35 downstairs. Mine doesn't have any size stamping on it either. If you can give me some dimensions, I'll compare it to this one.

Sorry about the screen name but it is one my wife has called me forever and most of my buddies have picked up on it. I am trying to get my old one back. Anyway, Here are a couple of pics. of the engine. any help is appreciated and also i am unable to get any spark out of it.[:@]

Honey:

Sure does look like my 35, except mine has the recoil start housing.
Here's some dimensions.
6 1/2" overall ht. of crank housing to top of cyl. housing
3 1/4" max. fin width looking from front.

If your points are clean . it has to be the coil or condenser. Guess that went without saying. Well, throw a bad plug in the mix too.

Take the muffler off and look inside. 1 ring=35cc, 2rings=40cc. They are the same on the outside.

Looks like a very old 35 with that prop hub. Not sure but I don't think the 42 had points. Set the points at .015 thou. Coil clearance is .010. Clean the points. Should swing a 18-8 around 72 to 7500. If it runs higher than that it's a 42 which normally runs an 18-10. Have fun.

The early 40cc has points, I have one and looks the same as a 35cc. The 42 is a later engine with a cdi as did the later 40 which has one ring.

Thanks for all the help. Will start digging into it. I am planning on putting it on a 1/4 scale Sig clipped wing Cub. Should power it like scale.

A G23 would be more scale as far as power. My friend has a Sig clipped wing cub with a G38 and it's over powered. If you keep the throttle back, it will then be very scale sounding as well.