|Lower shell only 60% cracked (but mounting point is damaged). Notice oval copper solder-pad ripped from ESC.|
|Upper shell 100% cracked. Screw mounting point compromised.|
Top and bottom body-shells are pretty much trashed unless I try to glue them back together. I would like final repair to look acceptable, but more worried about structural integrity since it is a motor arm and shell is also the frame.
|ESC damage. Not sure what PCB Revision this is, but I think it's older (ie v1.0).|
|Scratched SMT micro-trace and soldered on jumper wire for testing. It worked but didn't hold. Notice trace lifted from board but stayed connected long enough for testing.|
The PWM solder-pad oval got ripped right off the ElectronicSpeedController (ESC) PrintedCircuitBoard (PCB). I did a very-temporary micro-solder-hack to make sure ESC was still working, and it is. However, all the PWM traces are SMT form-factor, so re-acquiring that trace (on either PCB side) will be tricky. There appears to be several different "MFL1218" Nova/CX-20 ESC PCB Revisions and but the word in the forums is that they can be mixed in the same aircraft and work (calibrations, actual operation, etc.). Appears to be a simple 2-layer PCB.
|PWM detail. Under the letter "W" signal uses a hole-thru Via to other PCB side. All the way back, PWM trace is about 50% width of a normal trace like the 5v one pictured here.|
It came to rest like this. It was still on and knew it had landed. I don't think landing in the tree caused much damage, rather it was the Nova hitting the ground under the tree. In addition to the Body and ESC, one prop-guard was broken and twisted beyond repair. Three of the props were nicked but none had broken blades. Prop-guards seem to do their jobs ... absorbed crash energy, and likely prevented even more damage to delicate parts (ie motors).
The repair starts here.