ORIGINAL: nefariousrc
Great build but that 15x8 prop is to small.. Even a 15x10 unloads enough in the air to put you over 9k. If you absolutely must run a 15'' prop then you should go to a 3 blade to load the DLE 20 more.
I'm not saying you are wrong, but the 15x8 is on the dle 20 website as recommended...
http://www.dle-engines.com/dleg0020.html
Going to go and do some "homework" online to see if I can find anything else written about this.
Seems like something I really need to check out tomorrow at the club with the tachometer....