On my Sapphire, I replaced the front pivot pin with music wire
and perminantly glued it in place so that the taiplane tubes
pivot on the wire. This stops the tailplane slop, and takes all
the shock loads. I then kept the rear carbon pin to save weight
because it does not take any significant flight loads.
Paul Ferguson
Adelaide, Australia
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Monday, February 12, 2001 8:39 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [RCSE] incidence/pivot pins
>
>
> I just went through this thought process on a recent plane
> that came with
> carbon tail pins. Though light, they won't take the abuse
> that steel will.
> The stabilator is probably the most important flight control
> and a concession
> made to the weight gods is probably a good idea here. It has
> happened that in
> the heat of the battle, a plane was smacked in for a million
> point landing,
> and it wasn't until the subsequent launch that the broken
> stab pin was
> discovered. Big splat ensues. Another advantage to metal pins
> is that they
> can be kinked, which makes stab retention possible without
> glue or set
> screws. Anyway, I did have the right diameter music wire for
> the pivot pin to
> replace the carbon, but not for the rear drive pin. I found
> some laying
> around that was too thin, so I had to bring it up to spec by
> sheathing it in
> a brass tube. I thought "Hmmm, one could probably sheath
> carbon in a brass
> tube, save a little weight and gain a little durability.
> About the kinky stab
> retention, though, I don't know..."
>
> Bill Wingstedt
RCSE-List facilities provided by Model Airplane News. Send "subscribe" and
"unsubscribe" requests to [EMAIL PROTECTED]
