"Brian, yes a "bleed" resistor is added to trickle away the charge on big capacitors, preventing unpleasant surprises later (when maintenance people think the circuit is not powered). It's mandatory on high voltage DC such as CRT displays (thousands…"
"Interesting the difference in size between 5W (on the right) and 3W (on the left). I'm skeptical about the 5W rating - it seems likely that it could take a lot more. Anyway, you don't have to go with these silicon resistors. Any cheap resistor will…"
"Yes, no bother. This is my "no spark" pre-charge adapter, quick and dirty but sturdy enough. The solution doesn't need to be like this - lots of options including on-board with a separate set of small leads. The wire doesn't need to be heavy like…"
"Yes, the arc illustrates very high current rushing in to "instantly" charge up all the ESC and BEC capacitors. The current could start off at hundreds of amps - limited only by the capacitors' internal equivalent series resistance (ESR), the wiring…"
"This soldered ESC-motor connection method (previous pics) was quick and painless. Sleeving was added where the motor wires pass through the aluminum, and there is factory-installed sleeving at the CF motor mount plate penetration. Later the ESC wire…"
"Just as a follow-up, I tried the FoxTech 2.5mm to 3mm shims. They do make the propellers fit tighter, but still not a perfect fit for the 2.5mm screws. The slop along the length of the propeller seems to be gone, which is the point (avoid…"
"William, the strange package from Ms Huang might be shims from FoxTechFPV. They sent me a set for the 5008 motors. Explanation by email was:
The adapters is for the propeller .
The screw 's diameter of the motor is 2.5 mm but the hole's…"