Carl
I could be corrected too but imho because the rest of the pitch control
system only moves fore and aft it won't influence balance, so I would
think balancing disconnected is OK. The rest of system will affect
natural resonant frequency but not the initial response due to G loading.
Tell me if I' wrong?
Graham
Carl Pattinson wrote:
> Roger,
>
> I am willing to stand corrected but my understanding is that the
> balancing should be done with the torque tube "in situ" and with the
> rest of the control system connected.
>
> The control system forward of the torque tube horn will have a bearing
> on the overall balance of the pitch installation. Disconnecting this
> IMHO will give a less than optimum setup.
>
> Carl Pattinson
> G-LABS
>
>
> 3. While the tailplanes and torque tube were out of the aircraft I
> decided to do a check of the mass balance and was surprised to find
> the assembly 78g too heavy at the weight end. I genuinely thought I
> had achieved a good re-balance in situ after mod 70 but the friction
> in the control system was enough to mask the imbalance. How many
> more Europas are like this and might it have contributed to the
> accident?
> Since correct mass balance is so critical and removal of the torque
> tube (albeit a pain) takes less than a day's work, it might be worth
> doing this at the same time as mod 73 - giving the advantage of
> peace of mind and also being able to use your own torque tube for a
> better layup than wrapping tape around plastic pipe as some have
> suggested?
>
> Hope this helps!
>
> Roger Mills
>
>
>
> /Roger Mills
> 07921140616/
>
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--
Graham Singleton
Tel: +441629820187
Mob: +447739582005
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