Subject:
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Re: 8 wheel drive but no steer
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Newsgroups:
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lugnet.technic
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Date:
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Fri, 28 Mar 2003 13:08:38 GMT
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Viewed:
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819 times
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In lugnet.technic, Lars Gjerløw Jørgensen writes:
> My latest MOC - an 8 wheel drive atv.
> http://www.brickshelf.com/gallery/gadooble/8wheeldrive/8wfront.jpg
>
> This started out with four wheels - and the ability to steer.
> Then it bacame six-wheeled - the front wheels connected via
> a differential so that they didn't turn.. it could still turn
> with the front wheels dragging around...
>
> But when the vihicle climbed really steep, it needed something
> to push the back.. the rcx had the weight and two more wheels
> were added. Now it can climb anything - it even climbs up to
> 20 cm vertical.but the ability to steer is long gone :(
>
> http://www.brickshelf.com/gallery/gadooble/8wheeldrive/8wbottom7.jpg
>
> if individual steering has to be added - it will be too big
> and flimsy - I thought of a third motor og the "hood" to lift
> the back end up - but how can that be done while keeping the
> back end "loose"? The overall goal was to make a small atv
> with superb climbing ability - It can't be too big!
>
> any suggestions?
Could you incorporate some sort of articulation? You could completely
redesign the frame with a rotation joint in the middle.
Or perhaps design your front and rear axles with articulation. I don't know
if that would steer very well, but it's just a thought.
Or, getting back to your lifting idea, perhaps you could make the front and
rear axles lift off the ground, and then skid-steer the middle two axles.
That would require the use of extra motors, and you'd have to redesign your
gear train.
-TJ
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Message has 1 Reply:
 | | Re: 8 wheel drive but no steer
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| TJ Avery's utterance expressed in news:HCGn6E.xEM@lugnet.com: (...) maybe.. I hadn't thought of that - just like big backhoes or dumpers - only problem is to transfer the drive between the two parts - but that can surely be done :) (...) my initial (...) (22 years ago, 28-Mar-03, to lugnet.technic)
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Message is in Reply To:
| | 8 wheel drive but no steer
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| My latest MOC - an 8 wheel drive atv. (URL) started out with four wheels - and the ability to steer. Then it bacame six-wheeled - the front wheels connected via a differential so that they didn't turn.. it could still turn with the front wheels (...) (22 years ago, 28-Mar-03, to lugnet.technic)
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