Okay you guys I've got a Christian Eagle and I'm putting on a US41. I've already have one on my TF giant P-47 and it handles it just fine for me. I also have one on my HP200 and its been on there for a bout 5 years now and doing just fine. Turning an 18-10 I think but plane is out in the trailor no so can't make sure of the pitch. I do have one qustion for a few of you gasser buffs. On the US41 over on the carb side of the engine down on the seam of the crankcase there is a demple like thing there Can it be drilled for crankcase pressure for my smoke system. I realy need to know this in order to have smoke on my Christian Eagle. Can you guys help on this problem. Sorry to use your post for this uby