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Re: Europa-List: Crowbar OV unit wiring

Subject: Re: Europa-List: Crowbar OV unit wiring
From: Fred Fillinger <fillinger@ameritech.net>
Date: Sun, 20 Jul 2003 14:40:31

Nigel Charles wrote:

> As a result of discussion on the OV unit and one owner having
 > the unit work for real I have had another look at the wiring diagram.
 > The live side of the relay coil should be connected to the main busbar
 > and not the capacitor and R/B/C connections of the regulator as shown.
 > This will ensure the relay contacts will energise before engine start
 > unless the OV c/b has tripped.
>
> I will get the club mod updated as soon as possible to reflect this.

That's not clear how that prevents unregulated output (failed regulator 
and OV trips) going solely and disastrously to one of the pumps if wired 
according to Rotax.  Bob Nuckolls' diagram w/OVM for the "912/914" shows 
no fuel pumps at all - but 2 xpndrs :-), leaving me in a lurch as to 
what wiring arrangement we're even talking about now.  Is it possible 
for that diagram to be made available to nonmembers in the interest of 
safety?

Regards,
Fred F.




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