Subject:
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Re: Mechanical pneumatic piston
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 12 Oct 2003 11:09:22 GMT
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Viewed:
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2444 times
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In lugnet.robotics, Gus Jansson wrote:
> I have given this question some thought in the past and I came up with a theory.
>
> First of all some gear geometry background.
Very nice analysis! All seems perfectly logical to me!
> Anyway, I predict that if someone had enough worm gears, it would take 14 worm
> gears before you could squeeze in an extra half bushing and not cause any
> binding. 14 x 1.96349 = 27.48886. I don't have enough worm gears to verify
> this.
The other problem is not having an axle long enough to put them on. So I
connected them together with axles butting each other about halfway through each
worm gear. And with 14 worm gears and a 1/2 bush, there's play of over 1mm. The
best non-bind fit seems to be with 10 in series with a 1/2 bush. So I guess they
didn't quite follow the logical formula for some reason....
HTH
ROSCO
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Message is in Reply To:
 | | Re: Mechanical pneumatic piston
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| I have given this question some thought in the past and I came up with a theory. First of all some gear geometry background. Lego gears have 8 teeth per Lego unit (aka stud) of pitch diameter, the effective diameter to where the gears mesh. Using (...) (21 years ago, 12-Oct-03, to lugnet.robotics)
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