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Re: Rotax tacho problems/wanted

Subject: Re: Rotax tacho problems/wanted
From: Mark Burton <markb@ordern.com>
Date: Tue, 20 Aug 2002 12:37:20

All good advice I'm sure but the swapping wires cure really works. It
sounds bizarre but it worked for me. What was really weird is that my
tacho had worked quite happily for some years before it started
flickering. Changing the tacho made no difference and only swapping
the wires cured the problem.

Mark

From: "Dave Simpson" <dave_simpson@londonweb.net>
Subject: Re:  Rotax tacho problems/wanted
Date: Mon, 19 Aug 2002 22:19:57 +0100

> If the problem isn't cause by RF transmissions, then it's possibly a dicky
> pot inside the instrument.
> 
> Take it apart, and you'll find a (not fabulous quality) pcb-mounted
> potentiometer in there responsible for keeping the calibration.  Give it a
> stiff talking to, a squirt of WD 40 and a wiggle, then re-cal it.
> 
> Alternatively send it back to Skydrive.
> 
> Good luck
> 
> Dave Simpson
> 
> ----- Original Message -----
> From: Cripps, David <david.cripps@spsystems.com>
> Subject:  Rotax tacho problems/wanted
> 
> 
> > My standard Rotax analogue tacho has just started playing up by sometimes
> flickering at rpms above about 4500 (giving the appearance of 'kicking' or
> jumping up and down by 100 or so rpm) and not giving steady readings (when
> the engine is running steady as a rock). Has anyone else experienced this
> and what did you do to fix it? I have tried to find loose connections but
> there don't appear to be any.
> >
> > If it needs changing out, does anyone have a spare basic 912/912S/914
> analogue tacho that they don't need, perhaps because you've upgraded to an
> EFIS type system?
> >
> > Any help gratefully received.
> >
> > David Cripps
> > GBWJH
> >
> >
> >
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