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Old 12-19-2013 | 12:15 PM
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Dr_T
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Joined: Sep 2013
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From: Germany
Default Maximum commutation rate Mamba Max Pro?

Hi! Does anyone have any experience with operating a Mamba Max Pro (MMP) close to its RPM / commutation rate limit?

I'm planning on running a 6-pole 3700kv motor (Turnigy 2836) on 4S with the MMP, but I'm not completely sure that will work flawlessly, because of the required commutation rate (373k/min fully charged and 329k/min @ nominal voltage – no load obviously, so real world figures will be a bit lower fortunately).

I've looked around in other threads and found a post in which a Castle tech was quoted, saying Castle's ESC's can commutate up to approximately 320k/min. I also contacted Castle myself, and the same tech that was quoted in the earlier mentioned post told me the commutation rate of all Castle car ESCs is around 280k/min, so they're not that consistent with the info they're providing... Anyway, I also have a 3200kv 6-pole motor and did a no-load (empty shaft) bench test with it on a fully charged 4S pack with the MMP and nothing funky happened at full throttle (should be around 4*4,2*3200*6=323k commutations/min), so I guess the 320k limit is closer to the truth than the 280k.

Does anyone know (out of own experience) what happens when the ESC’s RPM/commutation rate limit is reached? Will it be like a hitting rev limiter or is there a chance of damage to ESC or motor? Any real life experiences (to what maximum commutation rate did you push your MMP?) are much appreciated.

Thanks!
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