Tonight's Dumb Idea...

[Bob]

> >The servo sure shakes a lot, but the relative motion between the
> >servo arm ant the engine is none. So the servo lasts longer and the
> >servo response to the engine is much more precise.
>
> How is it that the servo lasts longer being subjected to the engine
> motion and the associated dynamics?  I can see where the wear on the
> servo and throttle arm from the throttle pushrod may be reduced but
> that's a minor problem.
>

The vibrations the servo is given have, of course, much greater amplitude,
and this could let you think that it suffers more.

But what a servo really suffers of is the stress driven through his rotating
arm.
The gears and the pot wear is directly related to the impulses to the arm.

The more the acceleration of the connecting rod, the more wear to the servo.

With the servo virtually still compared to the engine, the servo arm is no
loaded at all, and the high amplitude - low accelleration forces the servo
is undergone to, is harmless to the servo.

Anyway, in a 4 years time, no one servo failure I know of.

PS: It might be possible for me to make some mistakes with my english.
If I write something wrong, please let me know.... ;-)

Best Regards

Roberto Bracchi - Modelcompositi

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