[ARC5] [Boatanchors] BC-348 Backlash Suggestions
WA5CAB at cs.com
WA5CAB at cs.com
Sat Apr 27 15:06:09 EDT 2013
I'm sorry, but this terminology is all backwards. In a simple worm and
spur gear right angle drive as used in the BC-348, lost motion between moving
the knob and moving the capacitor shaft has two main sources - backlash
between the worm and spur gear and endplay in the shaft the worm is mounted on.
To quote in part Webster's Third New International Dictionary,
backlash n b: the clearance, slack or play between adjacent movable parts
(as in a series of gears).
end play n 1 : slight endwise movement (as of a shaft or axle).
Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480
In a message dated 04/27/2013 12:48:32 PM Central Daylight Time,
vk2bcu at operamail.com writes:
> 73 de Les Smith
> vk2bcu at operamail.com
>
>
> To quote Richard Knoppow: "Most of the so-called anti-backlash
> arrangements of gears is really to eliminate play."
> So we really mean anti-play arrangement, not anti-backlash.
>
> I like your precise use of language, Richard.
> We (humans) often fail to use the correct word or term.
>
> For example it's more common to see "mHz" (meaning one thousandth of a
> Hertz - a very low frequency) rather than MHz.
>
> Les
>
> -
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