REFLECTOR: Nosegear Forks - Correction

Jim Agnew jim_agnew_2 at yahoo.com
Sun Jul 4 19:48:32 CDT 2004


Second sentence should read "channel bolted to the canard
bulkhead"

Jim

--- Jim Agnew <jim_agnew_2 at yahoo.com> wrote:
> Greg,
> 
> The original FG strut was mounted to a heavy aluminum U
> channel bolted to the canard and well supported.  Later
> models like the 173 mounted the top of the strut with a
> bolt through the keel and used two straight 1" knurled
> aluminum bushings in the keel.  My original strut failed
> when the two ears failed due to metal fatigue flush with
> the strut.  
> 
> Failure was no doubt due to the gear strut having never
> been heat treated and the Velocity bending jig allowed
> the
> strut to bow sideways while keeping the bottom and top in
> alignment.  This would place a bending moment on the ears
> that did not have the reinforcing webs (the replacement
> didn't either) and the metal fatigue at the welds was
> obvious.
> 
> So you have gear struts with and without reinforcing webs
> and that may or may not be heat treated and with or
> without
> the new forks so you figure out how many possible
> combinations that makes.  Then you can throw in the new
> and
> old style mountings, different layup requirements and old
> vs new style bushings and possibly a bowed strut.
> 
> Jim
> 
> --- Greg Poole <gpoole at zeta.org.au> wrote:
> > I'm curious about the fork issue .....1. were all the
> > ones that broke installed on the XL models or were
> there
> > just as many problems for the Standard fuselage?
> > and...... 2. was the problem the same for FG as opposed
> > to RG models?
> > 
> > I guess a small fuselage Velocity nosewheel can hit the
> > ground just as hard as a large fuselage under different
> > circumstances. 
> > 
> > When I think of all the landings the "Lanza Special"
> > performed as the factory "Multicolour" trainer-
> > especially with such a large bunch of highly
> > inexperienced Velocity pilots (includ'g me) .....
> > 
> > - not questioning the value of the new forks or my
> life,
> > just curious again....
> > 
> > Greg in Sydney.
> > Early Fork Std RG Velocity
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> 
> 
> =====
> James F. Agnew
> Jim_Agnew_2 at Yahoo.Com
> Tampa, FL
> Velocity 173 Elite Aircraft Completed & Flying
> _______________________________________________
> To change your email address, visit
> http://www.tvbf.org/mailman/listinfo/reflector
> 
> Visit the gallery!  www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
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> 


=====
James F. Agnew
Jim_Agnew_2 at Yahoo.Com
Tampa, FL
Velocity 173 Elite Aircraft Completed & Flying


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