Subject:
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Re: motors for the handy board
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 4 Nov 1996 16:38:53 GMT
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Original-From:
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Humberto Martinez Barbera <humberto@fcu.um&saynotospam&.es>
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Viewed:
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1569 times
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> Handy Board Users:
>
> I took the LEGO Super Car (#8880) and scrapped everything but the four
> wheel drive with the differentials, the front and rear wheel steering,
> and the suspension. Then I shortened the frame sllightly so that the
> distance between the axles of the wheels from front to back is not much
> further than the width of the overall vehicle.
>
> Then I tried to separate the front and back wheels from the same drive shaft
> and gear each of them down as much as possible so that a LEGO 9 volt motor
> could drive each one. As you might guess, there is not enough torque to
> drive the wheels - even when the axle is geared down 4 times over using
> LEGO 8 tooth and 24 tooth gears and the vehicle is held off the ground.
> And even if it did drive the wheels they probably wouldn't go that fast.
>
> I want to get a different type of motor that would be able to drive the
> vehicle but am not sure what I should get or where I could get it at.
>
> If any one can tell me what I should get that would work with the Handy
> Board and where I could get it I would appreciate it greatly.
I had the same problem. I did many tests, and the last one was: I removed
the 4x4 transmision, removed both forward and backward differential, and
put a 9.6V motor with a VERY high torque. The results: the car started
running, and in two or three meters all pieces were spreaded over my home
floor. Even when a tied the motor to the LEGO structure using wires, it
didn't work, beacuse plastic axles bend too much. If you want to drive
the #8880 use your own hands (yes, it does work :-). Maybe, there is someone
on the net luckier than we.
Humberto
\ /
o====|----------------------- -----------------------|====o
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Humberto Martinez Barbera e-mail: humberto@fcu.um.es
Departamento de Fisica humberto@colos.fcu.um.es
Facultad de Ciencias web: http://www.um.es/~humberto
Universidad de Murcia phone: +34-68-307100 -x2150
SPAIN fax: +34-68-364151
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