[NSRCA-discussion] Control horns

[David Flynt]

I like the 1" MKD Control horns, and if you want ball bearings, the MK
clevis, both available from Central Hobbies.  These work really good, and
the length is somewhat adjustable.  I really like the anodized aluminum
horns that RCME once sold, but you said that you did not want to spend a lot
of money.

If you don't want to spend less than the MKD horns, then long 4-40 bolts
with a non-threaded shank will work nicely.  All-thread will fail.  It is
important that the part of the bolt that is glued into a hard point dowel is
not threaded, and that the threaded portion is minimum length.  Scratch the
shank with alum oxide sand paper before epoxying into hard point.  I have
never had one of these fail or pull loose from the hard point.
www.microfasteners.com is a good source for long bolts.

Another option is to make the horns yourself from G-10 material, and glue
these into the the control surface.  G-10 is available from
www.McMaster.com.  See http://home.online.no/~ofremmi/Drawings/drawings.htm
for ideas.

Hope this helps.

David
  -----Original Message-----
  From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of mike mueller
  Sent: Saturday, February 04, 2006 9:56 PM
  To: nsrca-discussion at lists.nsrca.org
  Subject: [NSRCA-discussion] Control horns


   What alternatives are there to the Chip Hyde control horns. The plane I'm
building (Genesis) is setup with ply plates that are designed to use these
They are a little pricey. Mind you they look well made. Are there horns on
the market that are similar?
   Or how about someone out there that has a set of these that they want to
sell me. TIA,Mike


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