Hey, I have a SR. Telemaster running a 25cc Homey on gas/glow. The best prop I have found for this application is an 18x6. On gas a 16x8 is a good starting point. With the big Tele, you have to remember you are not going to rush it. It has a lot of lift, probably wouldnt hurry much faster with a 45cc than with a 25cc. Weight is not much of an issue. Mine was WAY over built by a club member, and flys @ 16lbs. It is still a very mellow flyer. It will fly fine on a 25cc Homey even if it is a mag engine.