[ARC5] [Boatanchors] BC-348 Backlash Suggestions

[J. Forster]

I disagree.

http://en.wikipedia.org/wiki/Backlash_(engineering)

It has nothing to do with dynamics and/or stored energy.

-John

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


> My humble two cents worth.....
>
> Backlash is when the gears move AFTER you have imparted some energy into
> the system by say turning a knob and then stopping.  It implies finite
> energy storage and a time constant associated with its release, such as
> the
> energy stored in a spring or grease mass that slowly releases that energy
> through the old gummy grease.
>
> Play is simply the slop that results from imperfect tolerances.  No
> residual stored energy after you stop turning.  No time constant
> associated
> with the release of that energy.
>
> You can have both play and backlash present.  I don't like either one, but
> backlash drives me nuts.
>
> Dennis AE6C
>
>
> On Sat, Apr 27, 2013 at 8:35 AM, J. Forster <jfor at quikus.com> wrote:
>
>> Actually, I believe 'backlash' is a one-dimensional subset of 'play'
>> that
>> applies to gears and linkages.
>>
>> A shaft can have radial or end play.
>>
>> IMO, backlash is the correct word-of-art for rotational slop in gear
>> trains.
>>
>> YMPV,
>>
>> -John
>>
>> =================
>>
>>
>>
>>
>> >
>> >   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
>> >
>> > --
>> > http://www.fastmail.fm - The professional email service
>> >
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