Subject:
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Re: How to make a differential when you've got no one?
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Newsgroups:
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lugnet.technic
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Date:
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Fri, 20 Dec 2002 14:40:43 GMT
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Viewed:
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1220 times
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First of all 1wd car would be only one wheel running. But in the 8840
instructions both rear wheels are driving the engine and it is by definition
a 2wheel drive car, but with a stiff rear axel. A true 1wd car would have
only one wheel conected to the engine and all the others would run free.
A way to make a sort of "differential" without using a rotating gearhouse is
to use slip-mode drive. Just connect one wheel direvt to the engine and use
a rubberband form the engine to the other wheel. When no friction (car goes
straight) both wheels would drive the car. When the car turns, one wheel
would run faster than the other one, and the rubberband would slip on the
bushing and give drive to that wheel but with slower rotation. For better
performance both wheels could probably be conected with a rubberband to the
engine.
Regards
Øyvind St
"Luis Hernández" <lmhariano@latinmail.com> wrote in message
news:H7DtHt.Czs@lugnet.com...
> I'm still working in the sports car (which I think will be about 8-10 • studs
> longer and 4 wider than 8408... using the same wheels). The frame is • almost
> ready, and it will include 2-speed gearbox (if I can, I'll build a 3-speed
> one and pop-up headlights) front independent suspension and maybe rear • live
> axle.....
>
> Maybe because I have seen many lego suspension systems (from official sets
> and MOCs)(and no-suspensions also)... and almost all of them have a
> differential gear... almost because the 8840 doesn't have it... it only • has
> 1-wheel-drive!!!!
> (don't you believe me? check here:
> http://library.brickshelf.com/scans/8000/8840/ )
>
> So I've got some questions:
> 1) Are differentials so important when builiding cars? What would happen • if
> I don't use one?
> 2)I don't have any differential gear (If you want to know what do I have,
> are these sets: 2854, 8207, 8216, 8226, 8232, 8236 and 8422; one each one)
> Is it possible to build a working differential? and how without having to
> make a 1wd car?
>
> Thanks a lot
>
> Luis
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Message is in Reply To:
 | | How to make a differential when you've got no one?
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| I'm still working in the sports car (which I think will be about 8-10 studs longer and 4 wider than 8408... using the same wheels). The frame is almost ready, and it will include 2-speed gearbox (if I can, I'll build a 3-speed one and pop-up (...) (22 years ago, 19-Dec-02, to lugnet.technic)
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