[NSRCA-discussion] Electric Motor Problem

[Ron Van Putte]

The Jeti Opto 90 ESC has two timing settings: low timing for 'normal'  
motors and high timing for outrunners.  I tried both.  It was worse  
with low timing.

Ron VP

On Jun 4, 2008, at 12:38 AM, chris moon wrote:

> Ron, I'm not familiar with the Jeti but try the lowest timing setting
> and see if that helps. I have my outrunners set to low timing and low
> frequency. Not the maximum power setting, but more reliable and cooler
> running.
>
> Chris
>
> Ron Van Putte wrote:
> > I have converted a World Models Spot-On 120 for electric-power. The
> > motor is a Dualsky 6350 - 12T (2000 watt), swinging an APC 18x12 E
> > prop. The speed control is a Jeti Opto 90 Advance. Using the Jeti
> > programming card, I set the timing for OUTRUNNER, the brake for OFF,
> > the cutoff voltage to HIGH, the cutoff type to SLOW DOWN and the
> > throttle curve to LINEAR. I am using a Futaba 9Z transmitter, with
> > the throttle throw initially set from -100% to +100% as indicated in
> > the Jeti instructions.
> >
> > When the throttle is advanced, RPM builds up normally, but at about
> > 60% of throttle stick position, the motor 'chatters' and I have to
> > shut it down. If I don't do anything other than reduce the high
> > throttle in ATR from +100% to +80%, the motor comes smoothly up to
> > maximum RPM.
> >
> > What's going on?
> >
> > Ron VP
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