Here ya go, King Kong...Stihl 090 chainsaw engine converted for airplane use...8 1/2 lbs, CD ignition with electronic control, WB25 carb with a choke..My 26-14 test prop was too small for testing..

How many CC's in a 090?

Enjoy,

Jim

Wow, 137cc the manufacturers HP is 13, that thing is going to ROCK!

It being a single, it's probably going to jump up and down too?

Take a solid plane to hold it down?

Enjoy,

Jim

Ralph;
You definitely have the BIGEYE on this one! What is it going on?

I ran this chain saw for about a year.

Lots of torque and a lower rpm. I sold it and bought an 088. More power but at a higher rpm.

The 090 should turn a LARGE prop to 7500rpm.

The 088 turnes 13000 with a little porting and a hollower out muffler.


Ralph

Did you leave the govener on the engine?

These things are governed for 7000 rpm...I had heard that lumberjacks took the governor off....It's an air vane thing like Briggs and Stratton lawn mowers use...It's gone...
I think it's going on a very large Spitfire...
It doesn't seem to shake too bad...I tested it on my Black and Decker Workmate test stand...Had to hold it down, though....
We use TWO of these cylinders on our Herbrandson racing twins...Estimated HP on glow fuel is about 30.....The stock version is 26 hp....
Maybe we should use 088 cylinders on the race engine, we turn the 090 version at 9000+

cool idea,a cheaper way to go,how much $ do u have in it so far.check out my husky i converted and put in my skybolt its cool also.go to [email protected],its in my hanger,have fun i have alot of pics,heres an idea put it in a mustang?? just a thought.thats what mine is going in ...take care and good work.bruce[8D]