Okay, been trying to reach Tom all day, but I guess they didn't make it back to work from the holiday. Maybe he got too much turkey????

Anyway maybe he'll see this or some of you other guys can help out?

I've got the 28% ver 2 Extra and I've been fighting the right thrust setting. Long story short, if you use fender washers to spread out the pressure of standoffs on the engine firewall, measure 'em before you put them on!

I'd put this model together and got it all trimmed out and flying quite nicely, but experienced some engine issues so I had to pull it off to get to the carb. Turned out it wasn't the carb but when I put the thing back together and got it running again, it was outta trim bad. Did some uplines to get the rudder set and when I landed there was a substantial amout of right rudder set. I pulled the cowl and measured the offset; 1.5 degrees between the F-1 former and the engine's prop flange.

Pulled the engine off and measured the standoffs one at a time, they were all the same length and the fender washers fell before I could locate them. Measured the thickness of those and got one a .055, one at .066, one at .074 and the last one at .084.

Well obviously I just got lucky with the initial orientation as those kinds of differences can produce some significant angle changes, but when I measured the firewall itself against the F-1 former, it's only 1.5 degrees.

Now everything I've run across, and input from friends who play with IMAC birds says that 2.5 degrees is a good place to start on the right thrust engine offset. So I'm curious if the Bunnies are set at 1.5 degrees and are intended to fly with that setting, or are you guys using more right thrust. My inclination is to set it at 2.5 degrees but if someone's got a better idea I'd consider it as it is kind of a pain to keep pulling the engine off....[>:]