Ok that was just plane stupid. When breaking in your DLE 30 don't use a such a large prop like the 20x6 MAS that I did.
Use a wood prop like a 18x6 or so.
I think I overloaded the motor on break in with the diameter of prop and the weight of it??
I'm lucky to get 7800rpm swinging a Xoar 18x10!
I'm now running a Bisson Pitts muffler and I realize that this does decrease the power a wee bit but the plane no longer climbs verticaly.
I don't think I broke this motor in properly.
