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Old 03-23-2010 | 09:58 AM
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curth
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Joined: Mar 2010
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1000 was a WAG, I ordered a Sentry (was going to build one but heck, its cheaper than I could probably bring one together for and will gather data.

I assumed (have not put it up on a scope yet) that the coils field strength is controlled by a high-speed pulse, same as traditional brushed motors. I meant increase that duty cycle so as to raise the input power higher than that throttle setting would normally call for, resulting in the RPMs the driver is calling for, but at a higher torque.

Let me try and put it another way.

Its my understanding that as timing advances, maximum RPM can be raised but at the cost of torque and with the back EMF heating up the motor. In yesteryear, the compromise was: enough advanced timing to increase top end, but not so much that the motor overheats and has no low-end torque. For this reason motors are still shipped with X amount of advanced timing, with no assumptions about what the ESC will add.

But times have changed dramatically; no compromises are necessary, we can change the timing in software to suit what the driver is calling for at any isntant in time. Great. Except why start at X? why not start at neutral where torque is maximized?

Coming out of a corner I am far more interested in torque than potential top speed, I would like the ESC to retard the timing [from the factory setting of, say 15 degrees] all the way to 0, and increase the power delivery from the battery so I have a smooth increase of throttle, but with much more available torque.

THEN blast the timing up to 50+ degrees for the [short] straight following the corner, and maybe even ramp it up to 80 or 90 (or whatever) for a long straight.

Follow? All I see in my Tekin manual is how to increase the timing. I am prepared to retard the bell on my Ballistics all the way to zero to simulate these effects, but not if giants have gone before me and found it to be pointless.
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