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Dnul
Joined: 09 Feb 2013
Posts: 18
Location: O'Fallon, IL
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 Posted: Wed Jul 10, 2013 10:23 am Post subject: Rudder Spring Length FireFly Question |
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The picture of a new factory-built FireFly shows that the longitudinal axis of a rudder spring must bend whenever a rudder pedal is pushed. Would it be better if the spring on a pedal that is pressed is allowed to relax?
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rowedenny
Joined: 09 Mar 2008
Posts: 338
Location: Western PA
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| Posted: Wed Jul 10, 2013 12:21 pm Post subject: Rudder Spring Length FireFly Question |
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Doug,
The rudder pedal springs on Kolbs do relax when that pedal is pushed. They are in tension and shorten when the corresponding pedal is depressed.
Dennis "Skid" Rowe
Mk3, 690L-70, Leechburg, PA
On Jul 10, 2013, at 2:23 PM, "Dnul" <doug.syler(at)att.net> wrote:
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Ducati SS
Joined: 15 Oct 2009
Posts: 93
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| Posted: Wed Jul 10, 2013 2:48 pm Post subject: Re: Rudder Spring Length FireFly Question |
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I made a small T bracket for the forward spring mount to eliminate this problem. Drilled and riveted to the 4130 cage tube so the bracket will not rotate. No binding or flexing of springs. Simple to make with 2 pieces of tubing and a triangular gusset.
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Dnul
Joined: 09 Feb 2013
Posts: 18
Location: O'Fallon, IL
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| Posted: Thu Jul 11, 2013 10:03 am Post subject: Re: Rudder Spring Length FireFly Question |
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I should get a 3/8" dia aluminum tube 8 and 3/4 inch long to hook the springs to so they're stretched 1 and 3/4 inches to get to the pedals in neutral since that is what the plans call for.
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Thu Jul 11, 2013 1:07 pm Post subject: Rudder Spring Length FireFly Question |
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Doug, From the picture it looks like either A) the tube that fixes the end of the springs is too short, or B) the springs are too long. You need to have the springs in the relaxed length when that rudder pedal is fully depressed, not when the pedals are equal, i.e. rudder centered.
Rick Girard
On Wed, Jul 10, 2013 at 1:23 PM, Dnul <doug.syler(at)att.net (doug.syler(at)att.net)> wrote:
--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
[quote][b]
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