Al,
Are you sure of the 40 GPM? That seems
like a lot. My radiator in/out is 1.25 inches, so the water would be
traveling at 628 feet per minute at that flow rate. That is over 7 miles
per hour!
Bill B
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Al Gietzen
Sent: Wednesday, May 12, 2010
12:24 AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re:
alternative water pump
Will the Renesis pump capacity pump enough water to
cool a 350 hp 3-rotor. Who knows? Frankly, I don't even know how
much flow we're talking about here. For safety sake, if a better impeller
was available, I would most likely buy it.
Mark;
As a
point of reference; 260 hp, and 30 degree delta T needs about 40 gpm. You can
scale up or down from there. At 6000 rpm I’m guessing the pump will
give you that, but of course depends on the delta P around the loop. If
you’re expecting 350 hp, things might be marginal; basically higher delta
T, which reduces overall effectiveness of the system a bit. But if you have
some excess capacity there - - I guess you’ll find out.
Al G