The Rotax installation manual provides the temperature/resistance response
curve for the VDO temp sensors. So they're easy to check.
Duncan McF.
----- Original Message -----
From: "Carl & Dot" <carl_p@ntlworld.com>
Subject: Europa-List: Faulty Oil Temp sensor
>
> We had a problem earlier this week and wondered if anyone else has had the
> same.
>
> Started A/C and warmed up prior to taxi. After about 10 mins temp was
> indicating 160C (30 degrees above redline). Water temps (ie: cylinder head
> thermocouple) appeared to be ok so we taxied back to the stand and took
> cowlings off - nothing appeared to be over hot. When engine cooled down
> temps were still abnormal.
>
> I have a spare temp sensor but before changing it wondered if these wear
out
> frequently or if I should be looking elsewhere. The sensor is connected to
a
> Grand Rapids EIS. Engine is a Rotax 912 with about 550 hours (dont know if
> the sensor has been changed previously).
>
> I seem to recall that the oil pressure senders are prone to failure which
is
> possibly caused by engine vibration.
>
> It will be fairly easy to test the sender once it has been removed as it
> seems to be a variable resistor of about 1k ohm at 20C falling rapidly to
> about 100 ohms when heated to 100C. At least those are the readings on the
> spare.
>
> The point I am interested in is whether these sensors are prone to failure
> (I have only owned the engine for the last 50 hrs).
>
> Carl Pattinson
> G-LABS.
>
>
> ----- Original Message -----
> From: "Graham Singleton" <graham@gflight.f9.co.uk>
> To: <europa-list@matronics.com>
> Subject: Europa-List: OV protection
>
>
> <graham@gflight.f9.co.uk>
> >
> > >: OV protection
> > >
> <paul-d.stewart@virgin.net>
> > > Before I revert to plan A - switches wires and CB's
> > >has anyone using the EXPbus any advice to offer
> > >Paul Stewart #432
> >
> > I prefer fuses to CBs. More reliable according to Nuckolls and much less
> > expensive. You must wire the alternator as Rotax (or Nuckolls) state. If
> > the EXPbus can't cope with that it will need modification IMHO
> > Graham
> > not a wiring expurt.
> >
> >
> > ---
> >
> >
>
>
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