Subject:
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Re: Motorized Lego Steering
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Newsgroups:
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lugnet.technic
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Date:
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Tue, 27 Nov 2001 23:29:06 GMT
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Viewed:
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922 times
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In lugnet.technic, Todd A. Schroeder writes:
> Is there a way to stop the motor from exerting force on the gear rack once
> the steering has reached its furthest point? i.e. How do you stop the
> steering mechanism from going to far?
Their are two methods I can think of.
The first is the one I used on my Rotinoff. Simply use the large pulley
wheels for your transmisson. Use elastic bands in the gear down mechanism
and when the steering reaches the stop the small pulley will simply spin.
You have to get the tension right so that you get adequate steering power.
To much tension and the motor stalls.
The other method is to use a short rack 4x1 and let the rack run off the
pinion gear. The motor now just spins freely. A spring mechanism at both
ends pushes the rack back onto the pinion so you can steer the other way
when you want to. When you keep the power on beyond end of travel, the
pinion will safely cick aginst the end of the rack.
Steve
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Message has 1 Reply:
 | | Re: Motorized Lego Steering
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| (...) [snipped] (...) That pulley method immediately reminded me of a long since past Technic set that used it for motorized steering: (URL) be smaller thanks to the red mirco motor. (I sure don't recall one in 1980!) Adrian Egli (23 years ago, 28-Nov-01, to lugnet.technic)
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Message is in Reply To:
| | Motorized Lego Steering
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| Is there a way to stop the motor from exerting force on the gear rack once the steering has reached its furthest point? i.e. How do you stop the steering mechanism from going to far? (23 years ago, 27-Nov-01, to lugnet.technic)
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