Subject:
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RE: gear differential
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 19 Nov 1998 19:38:26 GMT
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Original-From:
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Tim McSweeney <(tim@ams.co.nz)AvoidSpam()>
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Viewed:
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2078 times
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> > Actually I'm still proud of it - I built an all-LEGO automatic
> > transmission.
> >
> > Only *how* it worked was by using pairs of the little crown bushings
> > (seemingly defunct as of this year?) as clutches, a pair at • each end of
> > an axle (adjusted very *very* carefully to get exactly zero clearance
> > when turning free) with a worm gear thrusting against a • rubber band to
> > measure the applied force (and of course the usual 2:2 and 3:1 gear
> > ratios around the two ends)....
> > Its easier to build transmissions using the freewheels 16t
<snip>
Those freewheeling gears are really cool. I just bought the Technic Shuttle
and it comes with a whole lot of them It uses them in quite a complex
gearbox to drive all of the operations of a single motor. If you take
another look at the gears you'll notice the are sort of hollow, but on the
inside there are little ridges that stick out. The Gearbox includes another
piece that slides on a shaft and locks into these. really neat and compact,
makes wonderful clutch. I suspect It was first used in the gearbox of the
super car.
All I have to do now is work out a use for them with mind storms.
Cheers
Tim
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Message is in Reply To:
 | | Re: gear differential
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| From: stephen p spackman <stephen@acm.org> (...) Its easier to build transmissions using the freewheels 16t gear (its a 16t with a smooth hole in the middle, so it spins on axles). If you search for "technic transmission lego" on (URL) you can see a (...) (26 years ago, 19-Nov-98, to lugnet.robotics)
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