Then I'd better get the lead out.....
Doc Drella... what do you think?
T
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: "Tom Broeski" <[EMAIL PROTECTED]>
Cc: <Soaring@airage.com>
Sent: Monday, February 06, 2006 8:04 AM
Subject: Re: [RCSE] Supra #42 flies!!
I'm at 108 with #31.
Maurice
----- Original Message -----
From: Tom Broeski
To: [EMAIL PROTECTED] ; soaring@airage.com
Cc: [EMAIL PROTECTED]
Sent: Monday, February 06, 2006 3:27 AM
Subject: Re: [RCSE] Supra #42 flies!!
Is the CG different in the carbon model?
Where did it end up. I'm at 92.5 mm 64 mm seems really forward.
Tom
----- Original Message -----
From: [EMAIL PROTECTED]
To: soaring@airage.com
Cc: [EMAIL PROTECTED] ; [EMAIL PROTECTED]
Sent: Sunday, February 05, 2006 11:02 PM
Subject: [RCSE] Supra #42 flies!!
Following three weeks of slooow assembly, Supra #42 (carbon) was
launched today. The weather at Poway was perfect with light winds, light
thermals and lots of sun. No rain this year so there is no grass, just
brown stubble that generates thermals from about 0900 until sunset.
My Supra is a carbon model with a beautiful dark orange fuse and
white and orange wings. Assembly took a little longer than I expected
mainly due to my desire to put the pushrods inside the fuse and boom. The
fuse is tight quarters with the ballast tube installed. Details of the
pushrod installation are available from me off line.
The Airtronics 94761Z digital servos are a perfect fit in the wing
and fuse. I used the supplied hardware to connect servos to flight
controls and covered the servos with the supplied covers. Thanks to Barry
Kennedy and Larry Jolly for providing me with pictures and suggestions
about making the installation and setup.
'ole #42 was almost perfectly trimmed and flew nearly the length of
the field with the first hand launch. The first winch launch was equally
nice with a steep climb without the application of a launch mode. I used
the 5? degree tip joiners for increased stability during launch and
thermalling at long range with my ancient eyes. All up weight was 68
ounces including 3.5 ounces of nose lead and the CG was set at 64 mm.
After the joy of the first successful launch waned, I noticed that
Supra was still at about winch height although not encountering any
thermals. A quick trip around the field, down in the valley and way
upwind did not produce a thermal encounter, but did produce a 5+ minute
flight. The model has great L/D and good speed range. It will go fast and
it will slow down for min sink or thermaling.
A quick dive test and inverted flight showed a nose heavy condition
so .5 ounces were removed for the next flight. Again the dive test and
inverted still showed a nose heavy condition so another .5 ounces were
removed. Now it was right for my style of flying. It will pull out of a
dive test in 4-500 feet and flies inverted with little elevator.
A few adjustments were needed for the elevator compensation in
landing mode, but it isn't quite there yet. However landings are easily
controlled as the model will slow to a walk even without a head wind. The
large rudder provides good control for those last minute "jinks" for the
tape.
The Supra is a well designed, beautifully constructed thermal
duration model. It is very stable on launch and in flight with no bad
habits that I could see on these first flights. Judging from the winch
launch results, the carbon wing should be strong enough for F3J (I will
test it this weekend in Phoenix).
Thanks again to Airtronics, Barry Kennedy and Larry Jolly for their
help with this project.
Contact me directly with question regarding assembly or setup.
See you in Phoenix.
Don Richmond
San Diego, CA
[EMAIL PROTECTED]
www.hilaunch.com
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