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Other › PWM and Timing Settings for Align 750MX??
01-06-2013 05:01 AM  5 years agoPost 1
Funky Trex

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Westerville, OH - USA

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I am setting up a new Synergy E7 and I purchased a Castle 120 esc and Align 750MX 530kv motor for it. I have done a lot of searching but keep finding conflicting info on the settings I should use for this motor. I am looking for the settings for PWM and motor timing to use with this motor in the Castlelink software. Align has a pdf for the 700mx settings but not the 750mx. I have found some people say 8khz and medium timing, others say 12khz with medium or high timing. Another post said to just set it to outrunner mode under the PWM rate setting??

I am not familiar with how these settings effect the motor and would really appreciate some help from someone that knows the proper way to set these ESCs up. I assume running higher timing will give more power while sacrificing a bit of efficiency, but that is just a guess. Is timing just for personal preference or should it be a specific setting for each motor. Also, the 750mx is an outrunner, what is the difference between using the 'outrunner' option compared to a specific PWM frequency? Is one better than the other?

Any info would be greatly appreciated. I was hoping to test fly this heli tomorrow, but I want to make sure everything is set correctly before screwing something up. I will be flying 3d and I want to set this heli up to make a lot of power, but I am no pro and I don't want to wear the motor out early just to squeeze every last bit I can from it. Headspeed will be governed at 2000 & 2200.

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01-06-2013 08:53 PM  5 years agoPost 2
hgh001

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New Zealand

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You've got a PM

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01-07-2013 08:54 PM  5 years agoPost 3
Funky Trex

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Westerville, OH - USA

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I got a few PMs on this motor so thank you to those who responded. Everyone seemed to give the same info so I test flew my Synergy today with the ESC in gov mode at 2000 & 2200rpms, pitch at 12/12 and 12khz set for the PWM setting with timing set to normal. The motor seemed to run quite well on these settings. This was the first flight on this heli, esc and motor so I didn't get too crazy, mostly just feeling out the new heli. I only have one set of batteries so I just got a single 5 minute flight with it.

The ESC maxed out at 161 degrees. The motor peaked at 126 amps and 4960 watts. These numbers seemed pretty reasonable so I think the motor is operating properly at these settings.

The only problem I had during the test flight was my tail blowing out 180 degrees when trying a full power punchout from a hovering position. When doing punchouts upright and inverted without going to instant full throttle (gradually moving to full throttle) the tail held fine. Is also didn't blow out in backwards flight, tail slides or tic-tocs so it is probably just too much instant torque for the tail. I am running Rail 696mm main blades with 105 tail blades so I might try the rail 116s to see if that makes a difference.

If anyone has any additional advice, please post. This heli and motor are new for me so I can use all of the advice I can get.

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09-13-2013 12:33 AM  4 years agoPost 4
Gas Power

rrApprentice

Hampstead, NC 28443

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ttt so i can find it again

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09-13-2013 01:16 AM  4 years agoPost 5
Funky Trex

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Westerville, OH - USA

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I am also using a Gov gain of 17 and headspeed change rate of 19 for the 750mx based on recomendations from an Align team member

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