ORIGINAL: wormly81
I just put a .45 ST ABC engine on my first plane (Avistar). I propped it with a 10X6 and thought that would be appropriate until someone suggested 10X4 earlier in this tread. Any thoughts?
BTW it took alot more weight in the tail than I thought, and thats with my battery behind the servos. Has anyone else had to add significant weight to the tail (like 8 quarters maybe more)?
Jeff
When I built my first Avistar, I had to add 1.5 oz of the Prather sticky lead weights to the underside of the tail, very close to the end of the fuselage. This made it balance just SLIGHTLY nose heavy at the CG, so no issues there. On my second Avistar, I did the same thing, since it also has a .46FX on the nose, BUT, since I got rid of the nose gear and made it a tail dragger, I was able to get rid of .5 oz of the weights. Still is a little nose heavy, but that makes it fly just fine.
I started off with a 10x6 prop with the engine and found out that it wasn't getting the performance I wanted and it took time to get off the ground. Once I put the 11X6 on, the performance changed right away. Definetly buy a few different props to dial yours in to the way you want to fly. I started off using Zinger props, but moved on to the Top Flight Power Points, which did a great job. Plus, with all the strikes I was experiencing while learning to land, I went through 14 in 2 years time. I now use an APC 11X6 and I'm glad I am.
Have fun getting into the air!
Don