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Message
Has anyone considered the cooling combination that occurs to
me:
install smaller than stock pulley on eccentric shaft to drive stock
pump
at lower speed, avoiding cavitation problems and reducing needed
drive
power, and then augmenting the flow with an Electric Water Pump
for
climb, taxiing, and extra-hot days? Seems like the mix would offer
the
best of both worlds, and maybe some control over water temps in
cold
conditions.
Thoughts?
Phil in IL, 20B for an
RV-10
Well, I'm very close to
that setup. I'm running a mechanical water pump, and a Davies Craig EWP in
series. The stock pump isn't underdriven, though it probably should
be. I believe this is probably the most bullet proof setup there is.
On the ground, I've tested the EWP without the mechanical pump, by removing the
belt, and it works fine, so I'm convinced that it's a valid backup, even when
forced to pump through the stationary mechanical pump. FWIW, if I were
doing it over again, and had room, I'd probably run 2 EWP's and be done with
it. I'm planning only a single EWP for the single rotor, with no
mechanical pump.
Leon's right, PL's
wrong. Simple as that.
Cheers,
Rusty (no wombats
allowed)
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