Thread: MMP Start Power
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Pdelcast
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01.21.2010, 02:20 PM

Quote:
Originally Posted by Lauri View Post
jhautz, you're guessing wrong. I have no problems with using CHEAT mode. I know what I'm doing and I've tried different settings. Everything is OK except I don't understand the Start Power setting. Please note that in the first post I compared 17.5T with MMP to 5.5T with Novak GTB - the latter one is about 3x overall power and battery holds nice. I have no problems with overall power, CHEAT or using too much timing. 17.5T 540-size motor is low power compared to what the ESC or my LiPo can cope with.

I just want to know more about the Start Power. When to use "medium" or "high" settings. And if Castle guys can tell us - what does it change and when exactly it makes a difference and how. What's the trick behind the Start Power ;) ?

I have stock 1/10 touring race coming up and don't have enough track-time to test different settings so I'm asking. Gotta get the gearing and CHEAT mode settings right with 3-4 runs. Not enough time to start testing the Start Power magic :)
In sensored mode, start power limits the amount of current allowed at startup -- startup is the first few times the motor turns. This allows the motor to develop some EMF before the throttle is allowed to ramp up quickly.

If you use a little throttle at the start, you probably won't notice any difference.

Where it really makes a difference is in drag racing -- high start power will allow a faster spool-up of the motor. BUT -- it's dangerous as it is more likely to damage a motor.

That help?

Patrick


Patrick del Castillo
President, Principle Engineer
Castle Creations
   
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