32cc on Ultimate bipe
 

I have this plane and I am about to put a MAC 32 up front. It barely fits under the cowl. Is this overkill? If not what size prop should I run? This is my first conversion and any advice will be greatly appreciated.

RE: 32cc on Ultimate bipe
 

IMHO the weight of the engine is way too high. Heavy planes, no matter the horsepower, don't fly well.

Safe Flying!

RE: 32cc on Ultimate bipe
 

Thats what I need to know. What about a poulan 25cc it is a lot lighter. It also fits perfectly under the cowl. Here it is as a rough fit.

RE: 32cc on Ultimate bipe
 

If you kept the weight down to about 8lbs with the engine and planes weight combined you would probably have a decent flying sport plane but thats it.You could use a 6oz tank to keep the flying weight down.i had a poulan 25 i did and only had about 7-8 lbs thrust with a 16x6 mas wood prop.It was stock except i gutted the muffler.I first put it on my sons DVIII,1/4 scale balsa usa.weighed 11.25 lbs and did fly it but its a high wing and basic flat bottom,84 inch with lots wing area.i took it off and converted a 30cc homy and installed instead.hope this helps you a little about your decision.

RE: 32cc on Ultimate bipe
 

Homelite 25, 8400, Mejzlik 18-6....Thrust is 13+ :D

RE: 32cc on Ultimate bipe
 

The airplane is a 60 to 90 size airplane. You will not be happy with the size mismatch. The airframe will also not be strong enough.

Bill

RE: 32cc on Ultimate bipe
 

When I bought this plane(used) it came with a ST2300. It flew the plane OK but still did not have unlimited vertical. It advertised .60 to .90, But IMO a .60 would not even get it off the ground and a .90 would have just enough power to to fly it and thats about all it would do. I guess about all I can do is find another big glow engine for it.

RE: 32cc on Ultimate bipe
 

Get a good tunned pipe on that Supertiger engine. Maybe a pump also. You should have plenty of power. Capt,n:D