ORIGINAL: nemesis4u
Is the Magnum better than the TT 91 Fourstroke????? and what fuel is recommended....Lastly what 3 blade prop...?? 13x7?? I need two very reliable 4Strokes for a Twin Engine 80" OV-10 Bronco...any suggestions are much appreciated...I dont want to spend the big $$$$$ for YS...
The TT is heaver by about 2 ounces, but more powerfull than the Magnum. I don't know how this will balance on the OV-10 but if overpowering a smaller model I would recommend a Saito, else the TT may fit the bill. If service is a biggy then the Magnum and OS may be a better choice.
I own a TT .91 and it is very powerfull and gets well over 10,000 RPM with a 14-6 prop and 15% nitro. With 25% nitro it would peak at over 10,600 RPM, but I richen it up to 10,300. Never owned a Magnum but I had an OS .91 and the best I ever saw from it was 9,800. The Magnum is a near clone of the OS .91.
I would suggest a 13-6 for a three bladed prop, that is if someone makes that. The biggest problem with three blade props is a lack of sizes.