Motor timing ?

[egneg]

What are some of the considerations when advancing the timing on a brushed motor. I did some research and read that it is advanced until a gain of 5 amps are achieved but I don't have any means of measuring this.

I am using dual trinity speed jems 15T double wind, novack dually, 2 gp 3300's in parallel, and a prather 235 ss prop. The gear box is the standard box that comes with a kyosho hurricane and I believe it is 2:1 ratio. I am in the process of adding water cooling that is a single intake transom mount that Y's to the silicone cooling jackets and then each has its own discharge.

Any help or links to more info would be appreciated.

[Fluid]

Advance the timing by 3/16" from zero. This is a good place to start. The more amps you draw, the more timing you need. IME more brushed 05 motor damage is done by not enough timing than by too much.


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[egneg]

Sounds good if my math is right that's 15 degrees - thanks for the help!

[norbique]

Advance the timing by 3/16" from zero. This is a good place to start. The more amps you draw, the more timing you need. IME more brushed 05 motor damage is done by not enough timing than by too much.

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Hi Jay,

Sorry to dig up such an old thread, but does your experience also apply for larger outrunners as well?
I would like to figure out the timing for the Turnigy 4030 (T600) 1400kv 8pole outrunner motor.

[Fluid]

I run a Scorpion 4025/1100 on 15 degrees timing advance and it works quite well. Here are some comments from the US distributor of Scorpion motors:

"In some cases, if you have a very high Kv motor, the timing needs to be advanced to give the FET's enough time to turn on so that the magnetic field will be fully built up by the time the magnet lines up over the stator pole. If the timing is not high enough, the motor can lose sync with the ESC, and start to mis-fire.

"It is best to start with the Low timing and see how that works, then try the Mid timing. If the Low works, but the motor misses a little bit on Mid timing, then go back to Low timing. If it runs fine on Mid timing, you can most likely leave it there. In most cases, the Scorpion Motors will kick back if you try High timing."



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[carlcisneros]

Norbique

set the timing for that motor to 15Deg.

[norbique]

Thank you all I was thinking 15 degrees as well.