Diamond Dust in air and GRRT runs great after rebuild.
I havn't looked at the engine yet to know exactly what failed. When I said 5 flights eariler, I meant for that day. About 50 total. I'm sending it back to morris to let them look at it.
Most of the props I try give me 22k-23k with coolpower 5%. I modified a prop to make it a 7-8 and it started making the dd flutter! The 7.2-8.6 flew a little slower. I have a radar gun, but it is very hard to pick up a stealth! I'm looking at the eagletree recorder and may try one of those to measure speed.
We also took some video where I'll try to capture the sound and run it through the sceptrogram program for some speed/rpm estimates.