ORIGINAL: armody
Thanks Gray Beard,
I've been using mostly 11 size props, I'm not sure if I ever used 10 diameter prop. As I mentioned I'm currently Using 11X7, I love vertical climb and .46 size engine can give you a good vertical but not unlimited. I like speed of the planes but I'm not very crazy for them, more crazy I'm for is vertical climb. So rather than using 11X7 I should be using 10X7? cos currently I'm using 11X7 and cos of today I could not fly, and bummer, I should have used the longer pliers to hold the crankshaft nut and unscrew the prop nut, which I did at home not at the flying field.
Anyway for more vertical I gotta use lower diameter prop with higher pitch? and with WOT take off, I'd be flying 1/2 throttle for that plane, which I'm gonna do next week hopefully.
No, stick with the 11 and try a 4 or 5 pitch Some people, not myself, use a 12X4. Longer prop with a lower pitch gives you more torque. I no longer fly anything of my own with the .46 but when I was into fun fly events I used only the .46 engines, mostly the OS .46 LAs and the GP Up-Roar plane. I did have some of the small 40 size planes like the Extra and Super Sportster that I used some of the better OS engines like the FX. After a lot of testing I sort of stuck with the APC 11X6 but it depends a lot on the plane itself. If you want to go faster then try the 10s with 8 or 10 pitch. It's up to the pilot to test props on there planes/engines to discover what they, the Pilots like best. Any prop in the engines prop range will fly the plane, it's up to you to test props until YOU find the prop that will fly the plane the way YOU want. Prop testing is the only way to find out what YOU like.
Hold the prop and loosen the crank nut, hold the prop and tighten the nut. If you want to hold the engine from turning buy a piston stop, it's just a glow plug with a soft metal rod in the center to keep the engine from rolling over. I make my own but almost never need to use one. A wrench on the thrust washer just boogers up the washer!!!