Subject:
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Re: 2 speed automatic transmission challenge
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 24 Nov 1998 04:37:13 GMT
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Viewed:
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2009 times
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Dave Forrest wrote in message ...
> Based on this design, http://www.sonic.net/~rci/transmission.htm
> can you come up with a 2 speed automatic transmission.
Um, that's is a device to split the output based on the direction of the
input. Making that into an automatic transmission would be hard I would
think, as you need forward/reverse plus hi/lo, and those are orthogonal
(4 values total).
I'd be tempted to use a gravity-based system - as the motor torque
increases it lifts the motor until it engages a second drive output.
Hmm, can't see an easy way to make it shift down nicely tho.
Perhaps a semi-manual - it shifts when driven the right way with the
right load. Will have to have a play.
Moz
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Message has 1 Reply:
 | | Re: 2 speed automatic transmission
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| Here is some help.... (...) E E ===...=== [] | | [] TOP VIEW ][ 888 888 ][ <= drive shaft [] E E [] ===...=== (1)E (2)E | D DRIVE SHAFT =E][E==WWWWW==E][=>>...<MMM...MMM 242424 = 24 tooth gear 888 = 8 tooth gear | = axle E = ½ bushing ===...=== = (...) (26 years ago, 24-Nov-98, to lugnet.robotics)
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Message is in Reply To:
| | 2 speed automatic transmission challenge
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| Based on this design, (URL) you come up with a 2 speed automatic transmission. I did and its really useful. Some modifications were made to the transmission but it is basically the same. Additional 1/2 bushings near the worm gear give it faster (...) (26 years ago, 23-Nov-98, to lugnet.robotics)
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