From: "Rino" <lacombr@nbnet.nb.ca>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, October 02, 2003 6:53 PM
Subject: [FlyRotary] Re: Electric Water Pumps and Heat Rejection


> Ed Anderson wrote:
>
>  That analysis was based on the fact that the Mazda water pump
> > supposedly consumed 13-16 HP at 6000 rpm.
> >
> > Ed Anderson
>
> A half inch V belt will NOT transmit 13-16 HP for very long!  I do not
> think that is a realistic value.
>
> Rino

I presume you are correct, Rino.  The Mazda water pump is driven by two "V"
belts on the older engines which would up the capability a bit.  But, the
main point is - how much power does it really take to flow enough coolant to
keep the rotary engine happy at 6000 rpm rather than how much power might
the pump be consuming.

I don't know the answer, but I agree 16 HP seems a bit on the high side.  My
point was that if you base analysis on erroneous data or assumptions, then
it would seem to follow that the answer you get is liable to be erroneous
{:>)  Hopefully, Todd will get his bird back into the air with an EWP and we
will have real world data/evidence.

Ed Anderson