Congratulations David,
I would completely seal any leaks around the sides or
anyplace else that could leak between duct inlet and radiator. I read
someplace that a 1/2"square hole could cost you 20% of your cooling
effectiveness.
A gent who once sold Subaru engine installations tried
just sticking the radiator in back of the opening (no ducting) - did not
cool.
Yes, I find that getting the airflow up as soon as safely
possible will help a great deal in keeping temps down and bring them back down
quickly. My magic airspeed after take off is 120 MPH IAS then a 140 IAS
for climbout.
Looking forward to more reports
Ed
Sent: Friday, August 31, 2012 11:01 AM
Subject: [FlyRotary] Re: FIRST FLIGHT N655HC
Congratulations, David. I hope to be following
you soon. Are you able to cool on the ground? What did you do to
improve the cooling between the two flights? On 08/30/2012 10:48 PM,
hoursaway1@comcast.net wrote:
Thanks Mark,
it was kind of anti-climatic for the others on the ground because they already
saw that last month, but for me seeing the temps coming down at about the same
stage as Terry saw them still climbing was comforting. I'm setting up a
video camera to record the panel so I can focus on flying for now until I get
more comfortable. We have a 100 mile radius to work with & I
asked for & was granted a crew member during the flights
that computer tuning will be worked on. Tryed to get a stewardess
also but FAA said no. ???? Yes I read Ed's procedure
for takeoff & our sys. is very similar so will use for next
flights. Terry is a member of our EAA Chapter 55 here in Mason
MI, his dad just flew his 400 th Young
Eagle.
( where is that stewardess
with my Margarita )
David.
From: "Mark Steitle" <msteitle@gmail.com>To:
"Rotary motors in aircraft" <flyrotary@lancaironline.net>Sent:
Thursday, August 30, 2012 7:44:53 PM Subject: [FlyRotary] Re:
FIRST FLIGHT N655HC David,
Congrats!!! Job well done. Terry Lutz... WOW!
What was the OAT? I start to get nervous when my coolant temp goes
above 200 F. No reason to climb at WOT if not needed and OAT is high.
Mark S.
On Thu, Aug 30, 2012 at 6:07 PM, <hoursaway1@comcast.net> wrote:
First flight for me anyhow
not for the aircraft, Terry Lutz ( AKA;; world renowned professional
test pilot, flew in from France to do the First, First flight ) Temps
went;; coolant 221 F max, oil 210 F max,
on full throttle clime out up to 2000 ft., powered back from 6300 rpm to
5000 rpm/135 mph indicated, push the nose over to level off, pulled power
back to 4500 rpm ( made no prop pitch changes at this time
) temps went down to;; coolant 195 F, oil 190
F, this is without therm. & bypass blocked, also would like
comments about sealing around sides of both radiators, we saw the extra fins
there so we allowed air to pass through that area, may install a temp seal
& recheck data points next flight. Then possibly install venting
openings in bottom of cowl to let more airflow out quicker.
David R. Cook RV6A Rotary.
From: "Joseph Pirch" < pirch@sbcglobal.net> To:
hoursaway1@comcast.net, "rv man2010" < rv.man2010@hotmail.com> Sent:
Wednesday, August 29, 2012 8:40:58
PM [image/jpeg:photo.JPG] Sent
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