Simple, what do you feel is the best all around .61 engine.

OS 61 SF-P

Webra Blackhead 61.
Bill.

I have one of the Evolution 61 engines and it runs well with lots of power. I have an FX61 as well but I think the E engine has more power! Its also less money and looks cool!

i like the s.c.,a bit finnicky to set up but cheap and powerful if a little thirsty.

TT .61 Pro -- a winner, just like its baby brothers.

I am gonna buck the system here. MVVS 61, no doubt. Has power out the gazzoo. Runs great on low or no nitro fuel. Works well with or without a pipe. Rock solid construction. What's not to like?

Mark Shuman

I put my money on an Irvine 61.

Don't buy a .61. Get a .75 or .91 in the same case. Same weight, same mounting holes, same muffler mounts, just more rpm on the same prop or turn a bigger prop. Tower .75, GMS .76, Magnum .91XLS, OS .91FX.

Would you buy a ball bearing .40 or go for the .46? Why buy a .61?

'Cause a K&B .61 will outperform the .40-.46 with little or no weight penalty. If it fits (and it usually does), I'll use it in .40-size planes every time. And the .61 twist flat kicks.