Originally Posted by pauljdimauro
Hi Everyone, I'm building a Sig Riser 100 with modifications.
Does any one have some info on electric motor offsets?
Pics will follow.
When dealing with a powered glider, you may or may not care how it pulls during a climb. E.g.; my Powered BoT I didn't worry about any motor offset as I am only under power for 45-60 seconds at which point I start hunting thermals. Sure, it want's to loop under full power with 0 down-thrust, but I'm happy flying it up and was more concerned with trying to keep things as streamlined as possible with the power off. That's when it's REALLY flying. I suspect the larger/slower prop would require more than a smaller/faster prop - what do you plan on using? FYI, when I am doing offset for planes like this I generally start with 2-3 degrees down and 3-4 degrees right. Again, I do like to climb under power - not keep level at full throttle.
I've seen several sig riser 100" e powered builds/conversions on RCG, you may want to check the sailplane section there. Great aircraft, that riser!