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Anyone have already tried making a differential gear transmission with LEGO pieces? I'd really like to see it is done... Laurentino Martins --//-- (...) (26 years ago, 18-Nov-98, to lugnet.robotics)
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| | Re: moving in a straight line with two motors?
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(...) Lego already has a special "differential" piece. The Super Car has three of them. I think you can even buy it a la carte. --Ken (26 years ago, 18-Nov-98, to lugnet.robotics)
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| | gear differential
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(...) I've built a fairly compact one using only standard gears and pieces. I'm waiting for my digital camera to put up some photos of it somewhere. Mail me if you want a sneak preview. (26 years ago, 18-Nov-98, to lugnet.robotics)
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| | Re: gear differential
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(...) LEGO (...) Yes! You are correct. I've been playing with my Super Car and found that this was a very cool thing when I got my car last Christmas. I'll take a some pix of the underside of the Super Car if you all are interested on how the (...) (26 years ago, 18-Nov-98, to lugnet.robotics)
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| | Re: gear differential
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I would be more interested in a differential made with standard Mindstorms/CyberMaster pieces, if that's possible of course. Laurentino Martins (...) (26 years ago, 18-Nov-98, to lugnet.robotics)
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| | Re: gear differential
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(...) While 8482 CyberMaster does not contain a differential piece, Mindstorms does. So if you have Mindstorms, you already have a differential. If not, get the 5229 accessory pack. (URL) (26 years ago, 18-Nov-98, to lugnet.robotics)
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| | Re: gear differential
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Unfortunately I only have a CyberMaster... Laurentino Martins (...) (26 years ago, 18-Nov-98, to lugnet.robotics)
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| | RE: moving in a straight line with two motors?
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(...) It's included in the Mindstorms set, too. Tilman (26 years ago, 18-Nov-98, to lugnet.robotics)
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| | Re: gear differential
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Perhaps it is done by software. Have you tried building the steering model? I admit I have not built that one yet as I still having fun with the grabber tractor thing. Has anyone had trouble changing the batteries in this design? Unlike the crusher (...) (26 years ago, 18-Nov-98, to lugnet.robotics)
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| | Re: gear differential
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I saw this picture of a Limited Slip Differential yesterday: (URL) :-) (...) (26 years ago, 18-Nov-98, to lugnet.robotics)
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| | Re: gear differential
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(...) they never seem to transmit enough power to move anything reliably. (26 years ago, 18-Nov-98, to lugnet.robotics)
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| | Re: gear differential
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I know what you mean. However, the model being described takes advantage of the slippage. If they didn't slip and stretch, the two wheels could not move at different speeds. Matthew Miller wrote in message ... (...) (URL) (26 years ago, 18-Nov-98, to lugnet.robotics)
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| | Re: gear differential
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I have used rubber bands in some of my models. I have found that the Lego belts (I call them V-belts) have very different properties from your average rubber band (and the Lego rubber bands found in for e.g. Mud Masher). Some things I have seen: The (...) (26 years ago, 18-Nov-98, to lugnet.robotics)
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| | Re: gear differential
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(...) Hey, I had a worse idea once. 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 (...) (26 years ago, 19-Nov-98, to lugnet.robotics)
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| | Re: gear differential
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In article <3653850B.99A94081@acm.org>, stephen p spackman <stephen@acm.org> writes (...) Indeed. Lego themselves double up sometimes by adding extra pair of pulleys - that helps a lot. Is there a part no for rubber band spares - on their own. The (...) (26 years ago, 19-Nov-98, to lugnet.robotics)
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| | Re: gear differential - rubberbands
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There are pictures of the rubber bands and belts here: (URL) :-) (...) (26 years ago, 19-Nov-98, to lugnet.robotics)
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