Quote:
Originally Posted by Sammus
<rant>
The smoothness I think is the problem, my $100 turnigy HV is extremely smooth, I've never experience anything but smoothness with it, never any sign of cogging or anything.
The point is that its too smooth, its good to bash and drive around on tar or do donuts on gravel, but as soon as you want to race it or jump it (by which I mean doing jumps and landing them nicely, not byt style hitting some shitty homemade kicker in the middle of the road and landing on the roof on flat ground 10m away) you find its useless.
It's KIND of like punch control, except at 100000% and it only is applied to acceleration from 0rpm. The spool up speed from stand still is severly limited, so much so that if you hit a jump and nose down a little, tap the throttle to nose up, the motor wont actually spool up till you've done half a front flip and your 10cm from the gravel, roof first. The starting is set to as hard as possible (which is actually called 'normal')
It is a feature of all Air ESC's as I understand it (See "low torque soft start" listed in every air esc description) and although the softness may vary between manufacturers, I suspect it will still cause problems.
And I'm 99.99% certain its not just my controller, since I have heard several people say this in person and have experienced it personally on two controllers. The only people I have heard say it (the turnigy) doesnt exhibit this behaviour (no offense to them) are people that don't know how to jump properly anyway so wouldn't even notice, and seem to spend most of their time doing speed runs on the tar and rallying around on the dirt anyway.
</rant>
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I've experienced the same thing with the Sentilon (same as Turnigy) HV 100A ESC in my MT2. A while back I attributed this super slow startup to the fact that I'm running an overgeared/overvolted outrunner in my MT2, but others notice the same thing. It's really weird, the start is super slow, but after it starts the motor it will let the motor spool up very fast, often resulting in a loss of traction.
Let it be noted, however, that comparing my HV-110 and Sentilon (Turnigy), the HV-110 does not exhibit this slow start behavior, at least the way I have it set up.
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