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Date: Thu, 24 Feb 2005 08:42:28 -0600
From: Jim Sower <canarder@frontiernet.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Racemate alt/water pump
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Seems to me that alt/water pump would be a bit of a trap.  One belt 
failure takes out water pump, alternator and backup alternator (I assume 
that's the designation of the unit mounted on the WP).  I think if the 
crank driven PM alternators work out, we have two sources of power that 
are unlikely to be both taken out by a single failure (belt).  At this 
juncture we can very easily justify EWP(s).  Now we've got one belt 
driving the main Alt, and nothing much else.

Sounds bullet proof to me ... Jim S.

PS  Does anyone think a generic bracket can be TIG'd onto the front 
cover to hold the stator for a crank driven alternator?

WRJJRS@aol.com wrote:

> In a message dated 2/23/2005 8:11:56 PM Pacific Standard Time, 
> sqpilot@bellsouth.net writes:
>
>     Here is a posting from someone who was not happy with their
>     Racemate alt/water pump assembly. Seems his problem is that he is
>     running lower rpm's than we are. Interesting reading, however. He
>     seemed positive regarding the idea of combining alt and water
>     pump, and the quality of the pump. 
>     http://pages.zdnet.com/tonytryke/id8.html    Paul Conner
>
> Note Paul that he didn't say thatthere was anything wrong with the 
> unit, only with theway he had it installed on a street application. We 
> normally have the opposite problem, and need under drive pulleys etc.. 
> We are talking about a separate e-shaft mounted unit here. Not the 
> combo waterpump drive. You could always run that as your second 
> (backup) alternator.
> Bill Jepson