wing tip shape (now surface hinging)

[Keith Black]

Assuming the use of a computer radio, it's easy to program the throws in the radio to make sure they're symmetrical.

Keith Black
  ----- Original Message ----- 
  From: Rcmaster199 at aol.com 
  To: discussion at nsrca.org 
  Sent: Friday, November 26, 2004 9:44 AM
  Subject: Re: wing tip shape (now surface hinging)


  Ted, in my experience it makes no difference as long as the horn is located correctly to produce symmetrical throw top and bottom. More difficult to do that with a top hinged surface than a center hinged surface, so be aware of this pitfall. Yet, the top hinged surface is much easier to seal than a center hinged surface, so there are always compromises in everything we do. 

  Personally, I always center hinge my surfaces. 

  MattK


  In a message dated 11/26/2004 10:35:41 AM Eastern Standard Time, tedsander at comcast.net writes:
    About to head into the shop to start hacking ailerons out of my wing cores.  For appearance sake, I had planned to top hinge them.  I take it from the discussion,  that the way the surface is hinged has no noticeable effect in flight – provided the gap is sealed? Correct?



    Ted Sander





    -----Original Message-----
    From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On Behalf Of Bill Glaze
    Sent: Friday, November 26, 2004 8:53 AM
    To: discussion at nsrca.org
    Subject: Re: wing tip shape



    Yep--"Figure 8" stitch, with heavy weight waxed thread.  Worked just fine, too.  Bill Glaze

    Rcmaster199 at aol.com wrote:



    Lance, the rounded leading edge of the control surface was practiced way back in the golden (stone?) age of model aviation, when the hinge material was plain thread. Believe it or not, the control surfaces were literaly sewen into the wing or stab or fin. Surface actuation essentially allowed the surface to "roll", ie- it did not pivot about a single axis as present set-ups do



    Yor observation is correct: a rounded edge hinged with present hinges, will tend to bind.



    MattK

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.f3a.us/pipermail/nsrca-discussion/attachments/20041126/a899a268/attachment.html