Adjusting timing

[vegasdrift]

I have a team orion rush 11 turn motor. It has adjustable timing and I'm wondering how to do it.

[highroller]

To advance timing you rotate the endbell in a counter clockwise direction from the zero degree mark. For each degree you advance the timing changes the rpm and torque output the motor produces. It will also affect runtime and wear above a certain amount.
To retard the timing rotate endbell in a clockwise direction but avoid going past the zero degree mark (center of the magnets) or motor will rotate is the reverse direction. Retarding the timing decrease the rpm level - also related to acceleration while there is usually an increase in torque. Speed, wear, runtime will increase when set between zero and about 18 degrees with some motors.

To find the relative area for the zero degree mark look for either and indention made the motor can near the endbell both are parallel to each other usually resembling a D or T impression. The other is locate the middle point between the two mounting screw holes on the output shaft end of motor, the draw a line to the endbell end to orient the zero degree mark. The easiest method to determine the relative timing is to purchase a motor timing quage to set it relative. The exact method is to determine the diameter of can the using a math equation coonvert it in to degrees, cm or in = degrees.

[vegasdrift]

Ok, thankyou. Is there a noticeable difference when tuning with the timing?

[highroller]

Yes it can change certain ways the motor produces power when gearing doesn't work. Increasing the amount of timing can increase the rpm range which is related to acceleration but you generally have to drop down to smaller pinion because you've increase the motor's power curve.

Motors generally come from the factory or motor builder set at the amount of timing (can be between 6 to 24 degrees) that produces the best balance of rpm and torque. Under some uses that amount of timing maybe too little or too much.

[taz5176]

hi

im oso rather new in electric. wat is the max. temperature for the motor to run b4 overheat?

[vegasdrift]

I believe 140 is the temp you want. A general rule is that you should be able to hold your finger on the motor for 5 sec. after a pack without burning your hand.

[highroller]

The exact operating temperature will vary from motor to motor, so there is no exact way of saying what it is. Some motors will be almost uncomfortable to the touch but run very well, while others operate if cool to warm. So the best thing to do is see how motor runs for what ever you are using it for and checking the temperature by touching it. Look for motor to keep up the same speed for the duration of the battery pack. If it tends to slow dwon after 1-3 minutes and battery still has plenty of voltage, while feeling uncomfortably warm to the touch try dropping a tooth or two on the pinion.

After using different motors and gaining experience with this method you get a better idea of how hot the motor gets to feel and a visual idea of how the vehicle reacts in speed that gearing may or may not be correct. Plus not everyone's sense of feel is the same either.