Force .26 top end sputter

[Maxximus]

I broke-in my Ofna Lx comp. yesterday. It does pretty good but it has a little sputter coming from the exhaust when it is wide open.
Any thoughts??

 

[Maxximus]

Also, My what would happen to the engine if you put on a roto start and turned the engine in the opposite direction? ( Not starting it though ) Would their be any damage?

 

[SpitFireV12RR]

I broke-in my Ofna Lx comp. yesterday. It does pretty good but it has a little sputter coming from the exhaust when it is wide open.
Any thoughts??

Sputter of fuel, right? It's probally way to rich. I"ve found mine runs best at 200F - 220F. Any thing over that and it cuts out alot. Try LEANING(Clockwise turn of the needle) the Highspeed needle a little bit, by 1/16 in. turns. I would find the sweet spot and then turn the needle out about 1/16 in. turn to be safe.

 

[niggle]

Also, My what would happen to the engine if you put on a roto start and turned the engine in the opposite direction? ( Not starting it though ) Would their be any damage?

Almost definitely not. The one-way bearing would prevent the rotostart from turning the engine in reverse.

 

[evan811]

Maxximus, I think if I understand conrrectly, it might be detonation...my engine does the same thing...