[NSRCA-discussion] Electric Motor Problem

[Chad Northeast]

Outrunners usually require as high a timing as you can get (24-30 degrees).

Lowering the power will probably help as well.


----- Original Message -----
From: Ron Van Putte <vanputte at cox.net>
Date: Wednesday, June 4, 2008 8:20 am
Subject: Re: [NSRCA-discussion] Electric Motor Problem
To: General pattern discussion <nsrca-discussion at lists.nsrca.org>

> 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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> >
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