Subject:
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Re: Posi-trac differential?
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 4 Sep 2001 08:55:35 GMT
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Viewed:
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1780 times
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"Rob Stehlik" <robbby31@hotmail.com> wrote:
> In lugnet.robotics, "Elijah Meeker" <EMEEKER@austin.rr.com> writes:
> > Hello,
> > I have been looking for info on how to build a posi-trac differential, • which
> > supplies power to the wheel with the /most/ resistance instead of the • least
> > as with a regular differential. I was hoping the functionality was
> > mechanical, but I am starting to guess it is computer based.
>
>
> Hello Elijah,
> Just last week I found some interesting info on Torsen Differentials on • the
> web. They are completely mechanical devices. This may be the type of
> 'positive traction' differential you are looking for. Check out
> www.humvee.net for some info on these differentials. I just recently
> finished building a Lego version of this type of diff, and will add some
> pics to my site soon. The downside is that it is pretty bulky. I built it
> around one of the large technic turntables, but it could be built between
> two 40 tooth gears. Send me an email if you want more info.
Hi Rob,
can't wait to see the pictures of your Torsen diff! Let us know when you
release them to your site.
Mario
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Message has 3 Replies:
 | | Re: Posi-trac differential?
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| Got a prototype built. Easier than I thought. More friction in my prototype version than I wanted. I took some digital pics before I tore it apart. Mine was 4 x 9.5 x 5 studs in size and used 4 8t gears, 8 16t, 2 worm and 1 idler. The four 8t gears (...) (23 years ago, 4-Sep-01, to lugnet.robotics)
| | | Re: Posi-trac differential?
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| (...) Hello, Sorry I haven't updated my site yet... I will work on it tonight and tomorow night. I have been busy with going back to university. Also, one thing that was slowing me down was that both of my turntables were buried in my latest robot. (...) (23 years ago, 6-Sep-01, to lugnet.robotics)
| | | Re: Posi-trac differential?
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| (...) Make one ;) If you're not sure you want to put a hole in the ones you have, buy some spares beyond your stock requirement for ones with cross axle holes and adjust them. As a simple tip, use a drill press. Mount the gear using black friction (...) (23 years ago, 6-Sep-01, to lugnet.robotics)
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Message is in Reply To:
| | Re: Posi-trac differential?
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| (...) Hello Elijah, Just last week I found some interesting info on Torsen Differentials on the web. They are completely mechanical devices. This may be the type of 'positive traction' differential you are looking for. Check out www.humvee.net for (...) (23 years ago, 4-Sep-01, to lugnet.robotics)
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