Mark Steitle wrote:

Before going to the wrecking yards, I though I would check here on the
ACRE.  What I'm needing is a water pump housing for a 13B.  I

have one, but

it has cavitation pits in the impeller area and I don't want to use
it.  Anybody have one of these they're not planning on using?

Contact me

directly at msteitle@mail.utexas.edu

Thanks,
Mark S.

Don't have any stock ones to spare Mark but the new remote mount
units are
in the machine shop. Should be done any day.

Paul.
Could you explain the advantages of these new water pump housings?
John Slade

One advantage it is by nature low profile. No need to butcher
a stock pump. Don Dunbar pointed out that mounting a water pump low
on the engine kept it working despite a loss of coolant.
If the coolant level drops below the current pump's intake
it sucks air. Yet another is the water has a straight shot
into the impeller which should in theory improve the efficiency
and delay cavitation. The current pump has a sharp right angle
turn just behind the impeller. I hope to set one up soon
in the shop and test this theory.

A third advantage is it is easy to get a lot of wrap on the 
belt drive pulleys.

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2003 All world wide rights reserved.