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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Thu, 6 Sep 2001 16:03:14 GMT
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Original-From:
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John Barnes <barnes@sensors.com&NoMoreSpam&>
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Viewed:
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2099 times
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Rob wrote:
> 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.
> I took one out last night and started tinkering with the Torsen diff idea
> again. The turntable version is huge, but it works just like the real thing. I
> came up with a much smaller version based on the 40 tooth gears that I will
> include on my page as well. Boy I wish there were some 40t gears with
> clearance
> holes in the center!
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
pegs into
a block of technic beams. Hang on to the technic beams in a vise. Drill with a
3/16 drill (0.1875") which will usually over size to about ~0.190 - 0.193
which is
perfect. If you can borrow a four flute 3/16" end mill instead of a drill,
use it
nstead, it will give you a much better quality hole and will be less
inclined to
wander.
JB
--
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Message has 1 Reply:
 | | Re: Posi-trac differential?
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| (...) Boy I wish there were some 40t gears with (...) Wow, words of wisdom from a true hacker! I'm not inclined to parts modification, but if I really need to, I sometimes will. When I was young without much Lego, I made some 2L and 5L axles :) I (...) (23 years ago, 7-Sep-01, to lugnet.robotics)
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Message is in Reply To:
| | Re: Posi-trac differential?
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| (...) which (...) least (...) the (...) Hi Rob, can't wait to see the pictures of your Torsen diff! Let us know when you release them to your site. Mario (23 years ago, 4-Sep-01, to lugnet.robotics)
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