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Re: 18 amps from a 914 !!!

Subject: Re: 18 amps from a 914 !!!
From: Shaun Simpkins <shauns@hevanet.com>
Date: Thu, 30 May 2002 16:49:06
Whelen is about to release an LED version of their position light, and will
be releasing an LED version
of their A650 in about a year.  They are working on an LED version of the
A600.  This will reduce the
total current drain for the position lights from (for an A600) 8A to 2A.
They will be expensive, but you'll
never have to replace another bulb.

The landing light isn't on all the time, so it shouldn't be considered in
the total load on the alternator.  It will
drain the battery somewhat for the few minutes it is on during takeoff and
landing.  Consider using the
Whelen single-flash unit instead of the comet flash.  4A drain instead of
7A.

Lots of guys are flying around with just the basic Rotax alternator, and a
good kit of avionics.  Some with
vacuum gyros, some with electrics.  Consider that the B&C vacuum pump
alternator will put out about 5A,
enough to give you night capability and redundancy.  Several are going this
route.

And think simple.  The Europa (and the Rotax) wasn't designed for heavy IFR.

Shaun
A207
----- Original Message -----
From: "Paul Boulet" <possible2do@yahoo.com>
Subject:  18 amps from a 914 !!!


>
> Hi All;
>
> I'm sorry to say that I've buried my head in the sand regarding the
relatively small amp output from the Rotax 914 I'm considering.  It seems
unbelievable to me that a $15,000 turbo charged engine would have such low
amperage output...I mean geez.... the landing lights, strobe and
nav/position lights alone eat up 15 amps.
>
> Is it true that the only option is to add a second alternator (in lieu of
vacuum so goodbye vacuum instruments)?
>
> I'm planning my panel and seems that space in the 3/4 length panel isn't
the only limiting factor.  Comments would sure be appreciated.  Thanks
>
> Paul Boulet, A212
>
>
> ---------------------------------
>



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