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Help! ESC motor issues for micro balsa.

"Corpse"

Well-known member
#1
Hey Ya'll! I've got an eflite umx brushless all in one board. I soldered up a emax 1306 2700kv to it and got some really weird results. About 3/4 of the time the motor jitters like i drove a screw into the windings. The other times it works just fine and has normal thrust. Does anybody know why?
 

Turbojoe

Well-known member
#2
Hey Ya'll! I've got an eflite umx brushless all in one board. I soldered up a emax 1306 2700kv to it and got some really weird results. About 3/4 of the time the motor jitters like i drove a screw into the windings. The other times it works just fine and has normal thrust. Does anybody know why?
I've got several UMX planes and had a dozen or so UMX helis. I ran into the same starting problems on a few helis. Each time I re-soldered the motor wires and all was good. A "cold" solder joint can cause that stuttering. That 1306 motor may just be too much for the board too. Those boards are beyond fragile. It doesn't take much to cook one. Make sure you don't over prop it or you'll let the magic smoke out for sure.

Joe
 

Turbojoe

Well-known member
#6
Shoot, I completely forgot! I put a 1306 on my UMX Pitts AS3X board I used in my Super Sport build and it works though I don't expect a long life from the board. I found specs somewhere that said 5 amps max with a short 8 amp burst. Double check your solder joints and make sure you stay with the original size prop. If it still doesn't work maybe you have a wonky mosfet on the board.

Joe
 

"Corpse"

Well-known member
#7
Shoot, I completely forgot! I put a 1306 on my UMX Pitts AS3X board I used in my Super Sport build and it works though I don't expect a long life from the board. I found specs somewhere that said 5 amps max with a short 8 amp burst. Double check your solder joints and make sure you stay with the original size prop. If it still doesn't work maybe you have a wonky mosfet on the board.

Joe
That's what I'm thinking. I might just get some bullet esc's and a micro receiver. Thanks Ya'll!