Robotics : 14921


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Subject:	Re: I wish Lego made an "Anti-Backlash Gear"
Newsgroups:	lugnet.robotics, lugnet.technic
Date:	Thu, 5 Apr 2001 20:38:51 GMT
Viewed:	7306 times

In lugnet.robotics, Jerry Kalpin writes: > There is one real simple way to eliminate backlash: Use LEGO's 'small-link > chain' with their normal gears as sprockets. I paid CAN$7.00 for 135 links > from Pitsco-Dacta's Canadian vendor. There is absolutely NO backlash. Mind > you, the gearing problem becomes 'different', in that connected gears run > the same (not opposite) directions. You're kidding, right? It's almost impossible to build a geartrain using the chain that doesn't have tons of reversal delay. The links seem to be designed in such a way that they don't work well with technic beams and gears. I always have quite a bit of chain slack. > Also, the chain is beautifully made. When I show it to people, they don't > want to give it back. They want to play with it...! With this I fully agree.

Message has 2 Replies:

		Re: I wish Lego made an "Anti-Backlash Gear"
Dean, it's probably dumb luck that the two drives on the piece I'm working on have little slack. Yet, with LEGO beams and blocks you can't use every gear combination; there are published beam/block/plate combinations that let this or that pair of (...) (24 years ago, 5-Apr-01, to lugnet.robotics, lugnet.technic)

		Re: I wish Lego made an "Anti-Backlash Gear"
(...) If you use a tensioner arrangement, then it works OK. I haven't really played around with much more than simple weight tensioners (mostly for conveyer use...the catapilar treads are great for that!), but imagine you could come up with a (...) (24 years ago, 5-Apr-01, to lugnet.robotics, lugnet.technic)

Message is in Reply To:

		Re: I wish Lego made an "Anti-Backlash Gear"
There is one real simple way to eliminate backlash: Use LEGO's 'small-link chain' with their normal gears as sprockets. I paid CAN$7.00 for 135 links from Pitsco-Dacta's Canadian vendor. There is absolutely NO backlash. Mind you, the gearing problem (...) (24 years ago, 5-Apr-01, to lugnet.robotics, lugnet.technic)

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