ORIGINAL: patzane
I am building another bobcat (retract ver.) My old one has a tower 75 but it sounds like the OS 55 or supertiger is the way to go. Would I get more speed from the OS or supertiger than my Tower 75. So can a normal prop work if you put number foward or pusher prop the way to go. I use a 11x7 on the Tower
As already mentioned, you must use a pusher prop on any of the above engines. Sounds like the SuperTigre is a good engine but it weighs about a half pound more than the OS .55AX. That's a lot of extra weight for a very minimal gain in power. If you're watching your pennies the SuperTigre is about 50 bucks cheaper than the OS .55.