For what its worth, my inspector, Tony Kay, tells me he suspects that
the torque tubes supplied have a variable degree of heat treatment,
leading to some folk experiencing more "wear" in the holes than
others. I don't think he has hard data to back his suspicions, only
the observation that some torque tubes do better than other. Anyone
else have views or info on this?
Willie
On 24 Jun 2007, at 11:14, Duncan & Ami McFadyean wrote:
> Hi all,
> Remi,
> I'm not sure about that.
> I had to replace my outer TP pins at 15 hours.
> 300++ hours later they are still OK, despite operating mostly from
> grass strips.
>
> In my opinion, the pins are very accurately made. But the holes in
> the TP tubes are not. My new pins were set-up so that they had to
> be driven in; I suspect this makes the difference. The PFA
> requirement is now for an "interference" fit.
>
> Duncan McF.
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