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Hey
Guy's;
Tonight I installed the original EWP in a series configuration, as it was
way too windy (30Kts) for me to fly. I didn't even take it outside to test run
it as it started raining about the time I was finished, so these preliminary
flowrates are with the pumps running on battery voltage only and
non-pressurized, which usually has about a 25% lower flow rate than with system
voltage at 14vdc and system pressurized.
With either of the pumps running and the other off I found that flow
rates were approx 20% less. With both pumps running flow rate was about 25%
increased. Tomorrow I'll try to get up for a flight to get some real data,
however high winds are forecast to continue through to next week. I'll at the
very least just take it out and run it up on the apron.
My guestimation is that during cruise flight, one pump will continue to
handle the load, however due to the restriction at full flow I may now require
both pumps to maintain the same level of cooling that I required previously
during full power climbs. However with both pumps running I should have plenty
of reserve cooling, assuming that my coolers are not at their
capacity.
I
have some pics to send, but I can't get Photoshop to run properly to reduce the
image size so I can mail them. It's too late to reload the software now, I gotta
go to bed. I'll try to send 'em tomorrow
S. Todd Bartrim
Turbo 13B RV-9Endurance
C-FSTB
http://www3.telus.net/haywire/RV-9/C-FSTB.htm
"Whatever you vividly imagine, Ardently desire, Sincerely believe in,
Enthusiastically act upon, Must inevitably come to pass".
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