Jon
I was told not to bring the full alternator current to the panel to any sort
of switch. I have therefore used an engine bay mounted relay rated at 30amps
(I think) which I switch from an alternator switch on the panel.
Diodes I connected using AMP crimp ring terminals
Regards
Paul
G-GIDY
On 17/1/11 19:25, "JonSmith" <jonsmitheuropa@tiscali.co.uk> wrote:
>
> Just a couple of basic questions (my electrics knowledge is very basic)
>
> I'm wiring up my new secondhand Rotax - upgrading my plane from a previously
> installed car engine conversion. 95% of the aircraft wiring aft of the
> firewall is common to both thank goodness but I have a question about the
> alternator switch.
>
> My panel currently has a combined double battery/ alternator switch unit - one
> of the red coloured double rocker type switch units exactly as found in Cessna
> 150's - in fact it has "Cessna" printed on the case. My previous set up had
a
> battery solenoid (still keeping that) but the car-type alternator output was
> controlled by switching the field on/ off via the alternator switch. Thus
> both switches had very low load through them.
>
> My limited understanding is that the Rotax does not have a separate field like
> a conventional alternator and so the output from the regulator must all go
> direct to the positive bus via the alternator switch. My question is - can
> anyone advise if this Cessna switch is man-enough for the job? - it has no
> rating markings on it and I can't find it in any catalogues to check it's
> rating. (It looks pretty chunky but size isn't everthing so to speak). Do
> other people use these or is it best to have separate switch units?
>
> Second quick question - the manual advises to connect a diode across the
> starter solenoid coil. Do people bother to do this? If so, can anyone advise
> a neat and easy way of physically connecting it. I have one and can think of
> several ways of bodging it up but would much prefer a professional looking
> solution.
>
> Thanks in advance - any help appreciated! Jon
>
> --------
> G-TERN
> Classic Mono
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=327315#327315
>
>
>
>
>
>
>
>
>
>
>
|