[ARC5] [Milsurplus] Anti-Backlash Gears

[J. Forster]

Hi Mike,

I agree that using a teflon lube might be a good idea,

Frankly, I suspect the split gear lubing was done in repair depots, and is
not factory original.

Of course, Teflon lubes were not available in WW II.

John

=============

> On 1/25/2012 10:36 AM, J. Forster wrote:
>> In my experience, anti-backlash gears should not be lubed at all. The
>> tooth area is OK with a little light grease, but the area between the
>> gears should be chean and dry.
>>
>> What does the manual say?
>
> The manual is most likely silent on it, John.  The main reason I like to
> put a thin coat of light Teflon grease on such mating surfaces is
> precisely because of your other suggestion - putting it on the gear
> teeth alone is a good idea but it doesn't stay there - it eventually
> works down into the (originally clean) gap between the gears and
> eventually gums up the process because it brings with it dirt and brass
> swarf from wear.  A thin film retards that migration because it has to
> push against an already established barrier.  YMMV, but I've seen the
> same technique used for larger, higher speed assemblies driven by
> servos, so it made sense to me.  Probably overkill for the construction
> and very low rpm application that we use in tuning, but what are we
> about if not Principle Number 8 - enthusiastic, overly-excessive
> attention to infinitesimal detail whose effect will probably never be
> noticeable in our own lifetimes? :-)   I'd buy the no lubricant
> whatsoever approach, but those gears are not usually precision cut with
> hobs, so mis-match between engaged teeth does generate brass dust over
> time.  Frankly, a more compelling reason to dismantle and clean is
> arguably to lube the sleeve bearings for the tuning shafts...they bind
> up more rapidly than the split gears, IIRC.
>
> But in the final analysis, doing nothing at all is probably an option,
> too...until Principle Number 8 raises its ugly head...heh, heh...
>
> 73,
> Mike
>
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