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ACRO E-mail Archive Thread: [IAC-L:112] Re: Aileron Rigging

Thread: [IAC-L:112] Re: Aileron Rigging

Message: [IAC-L:112] Re: Aileron Rigging

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From: "Anna Wood & Len Rulason" <awood at htonline.com>

Date: Wed, 18 Jun 1997 05:32:34 UTC

Message:

  Ana the ailerons should be flush with trailing edge of wing per Pitts
assembly manual.

If you would like I can send you a copy of the rigging section.

Len Rulason
IAC #10959
Howell,MI

----------
> From: ANA M. VEGEGA <73761.1371 at CompuServe.COM>
> To: Multiple recipients of list <iac-l at listproc.eracer.org>
> Subject: [IAC-L:109] Re: Aileron Rigging
> Date: Tuesday, June 17, 1997 6:37 PM
> 
> My partner just picked up our Pitts S1S after it had been re-rigged
during the
> annual inspection.  He reported "serious" lateral vibration in the stick,
and
> said it felt like some kind of harmonic oscillation.        He called the
> rigger, who told us to take the spades off to see if that fixes it.
(Apparently,
> Harmonic oscillation can come from the square spade, and he mentioned we
might
> want to try a triangular spade) He also mentioned that when he had rigged
the
> ailerons, he rigged the top ones slightly up, instead of in-line with the
wing
> as they had been previously.  (He said this puts more tension on the
slave strut
> which should be a good thing)
> 
> Now, here's the problem...We had no problem with vibration prior to
re-rigging,
> so I'm wondering why the spades were OK before and not after.  Secondly,
has
> anyone heard of rigging the upper ailerons slightly up, and why one would
want
> to do that?
> 
> I'm sadly ignorant on this, and before we start trying random fixes,
would like
> more information.  If you can help or know a good source, please respond
to
> 
> Ana M. Vegega  73761.1371 at compuserve.com
> (415) 572-7151
> Thanks!!!!!!  
> 

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