Thats exactly why I chose full on carbon version. None the less, under the
right conditions with a heavy foot I suppose one could flutter the wing off
of it as well. I know they are strong, but to me still scary, grab the wing
too hard, and believe me it isnt that hard, they exhibit a "crispy/crunchy"
sound ala the snap, crackle, pop of Rice Krispies!
That concerns me. My Icon never did that. I would sell it except
nobody seems to want a excellent condition Pike anymore, especially with
Barry bringing in the Supra now. If it does decent at the worlds maybe
there will be some renewed intrest then I could dump the thing.
Walter
----- Original Message -----
From: "Michael Lachowski" <[EMAIL PROTECTED]>
To: "Marta Zavala" <[EMAIL PROTECTED]>
Cc: "Phil Barnes" <[EMAIL PROTECTED]>; "Soaring Exchange"
<[email protected]>
Sent: Thursday, December 29, 2005 6:35 AM
Subject: Re: [RCSE] What are you doing to kill 5125/168 servos?
You had a full carbon Pike. Phil had one of the ligther ones. The problem
is the layup on the really light ones just isn't suited to a zoom in the
wind.
Marta Zavala wrote:
Ive hit my F3J full carbon Pike very hard in a breeze during launch and
have yet to experience any control surface flutter. I dont go really
deep
"into the bucket" on zoom though, especially in wind. Not because of the
wing flutter issue Phil experienced, but because it seems to me a short
quick zoom/ping off the line always results in higher launches for me.
Ride that zoom deep into the bucket and perhaps youve lost much of that
stored line energy? Plus you may just flutter your wing off. Just my
stupid opinion.
Walter
----- Original Message ----- From: "Phil Barnes"
<[EMAIL PROTECTED]>
To: "Soaring Exchange" <[email protected]>
Sent: Wednesday, December 28, 2005 6:03 AM
Subject: Re: [RCSE] What are you doing to kill 5125/168 servos?
----- Original Message ----- From: "Tom Watson" <[EMAIL PROTECTED]>
what are you guys doing to kill the flat wing servos?
Ford Long shaft winch, strong winch battery, short (<600ft?) 240 lb test
braided winch line, no retriever, bit of a breeze. All of that in
combination with an agressive (even abusive), unpracticed launch style
that generally involved diving too deeply on the zoom and most
importantly a model with very heavy ailerons that had a strong tendency
to flutter.
Just ask anybody that attended last June's LISF (Long Island Silent
Flyers) contest. They will tell you what a Pike Superior SL sounds like
when the ailerons are fluttering so violently that the entire wing is
twisting to very odd angles. This happened repeatedly even after
switching to DS368 servos. The HS5125s stripped on the first launch. The
DS368s survived a few of those launches although the lighter servo arms
did not survive, the servo mounts did not survive and finally, after
going beefy on the servo arms and on the servo mountings, the control
horns in the ailerons ripped out. I kept trying to beef up the aileron
servos and mountings because I was stuck on Long island with only the
Pike to fly and it was my mind-set that molded models were "buy and fly"
and the Pike was an F3J model that should be able to handle any launch
you can give it.
It isn't pulling hard on launch that strips the gears. With the Pike
Superior SL it is the going really fast that does the trick. The biggest
problem on that particular model seamed to be that the ailerons were
really heavy which is bad from a flutter perspective. David Hobby
(current F3J world champion and Pike flyer) suggested using longer horns
on the ailerons. I never tried that since I sold the model first.
Phil
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