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I agree, Al. I don't see how that much heating of
the coolant could happen in a second or two. I personally think it has to
do with lack of any air in the system as it does not do that when there is air
present. Could the fact that I used stainless steel braided lines for the
coolant system minimize expansion? In any case, I have flow with that
condition for several hundred hours with no apparent ill effect, so it does not
appear to be anything detrimental to the operation of the engine.
Ed
----- Original Message -----
Sent: Sunday, June 26, 2005 11:13
AM
Subject: [FlyRotary] Re: Coolant
Leak
Al, all I can tell you is
that the pressure would go immediately (within 2 seconds) to 21-24
psi. Then as the engine warmed up the pressure would drop to a nominal 8
psi or so
It makes sense to me Ed. Heat the
coolant just a little, and it needs to expand just a little. In order
for any of the coolant to flow out past the cap (even just a little coolant),
it must reach the pressure rating of the cap.
How much can the
coolant heat up in 2 seconds after start? Just about zero. The
only thing that is heated a little in that time is the rotor housing walls.
Maybe that reduces coolant volume. In any case, if you have any radiator
hose in the system, it will expand enough to keep the pressure from increasing
that much. There is some weird science in here
somewhere.
Al
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