Recent content by scattermaster

"Cherry bombing" Does that mean I need to get it red hot? (Scary) I have material to make one but I'm more than a little intimidated by the prospect. It's a tiny thing. Not sure how I'd machine the wrist pin keeper grooves. Really tiny. Incedentally, a buddy loaned me another G15...

My engine was leaking compression around the side of the piston. You could see it in the exhaust port. Really bad. So, expanding the piston is a possibility then? Nice!

Jos, I probably will check out the fit, old liner/new piston and new liner/old piston. Not so inclined to go to town with a center punch on the sides of that piston? I learned a little bit about lapping tools yesterday. Maybe I can make a piston to fit the new liner? It might be above my...

Hey guys, Is anyone familiar with the old SuperTigre G15 engines? I have an old control line version of this motor that was apparently reworked by George Aldrich. (GMA Custom engraved on the head) I want to see if it'll work for 75mph combat. It's been sitting for 40 some years. I...

yeah, It seems like starting would be easier when you can see what's happening at the venturi. Not as apt to flood.

Neil, "added directly into the back of the crankcase" ?? I've never heard of that. In the old days we used crankcase pressure from a tap in the back plate on our rat race planes. As far as I know, the F2D guys are using bladders and going in through the venturi area just like I'm...

I took Neil's recommendation on hole sizing and made my own spray bar yesterday. Took about 3 hrs, but I work slow... Came out pretty nice. Thx, Jim

thx Neil. I have been using a Jett remote needle on my 424's and even my Club 40's but those motors come set up that way. I want to set up my slow combat models the same way. Just been getting conflicting opinions about the spray bar. Most of the ones that I've seen recommended aren't even...

Hello, Lurker here. I want to convert an RC engine with a carburetor to a control line engine with a spray bar and remote needle valve. (it's an OS 25 FX) (I'm setting up for 75 mph combat) My question is, how can I know what size hole should be in the side of the spray bar? Other...