Interesting comments about the Les' BobCat. I lost a HotSpot about 2 years ago with identical findings. 2 flights before the crash, elevator commands seemed to be getting soft coming out of loops or reverse cubans. Then on the final flight, after a high speed pass and pullup and 45 deg downline on downwind, no elevator. No bobbing, rolling, pitching....nothing. Went straight in at 45 deg down. It had 8411's on the elevons.

Battery was salvaged and check O.K. Heavy Duty JR switch got trashed, but still functioned. Plane had over 225 flights. 8411's were fairly new, having replaced older 4721's about 50 flights before the crash. Both servos were stripped, but after replacing the gears, worked fine. RX was junk.

My final impression was I lost power to the elevator servos. I was wondering whether a long term high current going to the servos fried the output to the elevon channels, but why both at the same time, or just lost power to everything, but why the soft elevator on the 2 previous flights?

Tom