 | | Re: 2 Motors -> 1 axle
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(...) One way to make the axle stiff is to use mutiple axles. For example, get one long axle and four equal length shorter axles. Use the four shorter axles to join two of the largest gears together, using the axle shaped holes that are off-center (...) (25 years ago, 7-Jan-00, to lugnet.robotics)
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| | 2 Motors -> 1 axle
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After the good suggestions from folks (see the Balancing Bots thread) I did some experiments with using 2 motors to drive one axle (to double the power to the axle) and thought the results might be of interest to others. I first tried having the (...) (25 years ago, 7-Jan-00, to lugnet.robotics)
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| | Re: 2 Motors -> 1 axle
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Instead of trying to connect two motors to the same axle using the crown gears, why not attach the two motors to the same axle using axle connectors. This would avoid the slipping problem that you mentioned and should have less frictional losses (...) (25 years ago, 7-Jan-00, to lugnet.robotics)
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| | Re: 2 Motors -> 1 axle
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Dave Johnson <djohnson@sirius.com> wrote in message news:0FNZ00JD94JH7Y@...pbi.net... (...) I think you are drawing entirely the wrong conclusions. As others have said, your mechanical connection is at fault, not the differences between motors. Two (...) (25 years ago, 7-Jan-00, to lugnet.robotics)
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| | Re: 2 Motors -> 1 axle
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(...) What an idea! This might be something we all could use! Think about it... Aluminum axles! Stronger than the plastic and just as light. Maybe an alloy would work better. Of course, we're talking _precision_ machining here, but it's possible... (...) (25 years ago, 9-Jan-00, to lugnet.robotics)
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| | Re: 2 Motors -> 1 axle
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(...) The shift from using standard parts to custom-built nonstandard ones? (25 years ago, 9-Jan-00, to lugnet.robotics)
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| | Re: 2 Motors -> 1 axle
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(...) Look at something other than aluminium. Try the simple expedient of getting a piece of rod the same diameter as a Lego axle, you will find that aluminium is _very_ soft stuff, and will bend (and remain bent) far easier than the plastic axles. (...) (25 years ago, 9-Jan-00, to lugnet.robotics)
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| | Re: 2 Motors -> 1 axle
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The thing to do would be to extrude the axles out of an aluminum alloy like 6061-T6. They would be about 20 times stiffer and weigh twice as much. If they were stainless steel, they would be 50 times stiffer and weigh six times as much. Regards, (...) (25 years ago, 9-Jan-00, to lugnet.robotics)
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