Subject:
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Re: Universal Joints
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 29 Dec 1999 16:21:27 GMT
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Viewed:
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871 times
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"RE" == Richard Earley <richard.earley@worldnet.att.net> writes:
RE> While building the 8448, I was dissapointed to see universal
RE> joints used in the drive for the suspension system. My experiance
RE> with these in the past was not the best. The axel holder end will
RE> crack under stress. I am leery to motorize the model because of
RE> this.
Not something I have experienced. Admittedly, I don't have a lot of
experience with universal joints under high stress. It seems, though,
that 8448 was specifically designed with motorization in mind. Surely,
if TLC thought this was a problem, they would've done something about
this?
RE> This led me tho think up a different suspension method:
RE> Overhead View:
RE> "-|" denotes wheel
RE> "+" denotes axles
RE> "^>" denotes beveled gears
RE> "#" denotes suspension arms
RE> -----
RE> | |
RE> | | >
RE> | |+#+>++++#
RE> | | # > #
RE> | | # ^^^ #
RE> ----- # + #
RE> # + #
RE> # ^^^ #
RE> # > #
RE> #+>++++#++DIFERENTIAL
This is similar in a way to what is used in 8858 for the rear wheels,
only your version is independent. See
http://www.brickshelf.com/scans/8000/8858-1995/8858-22.html
RE> This could possibly lead to a thinner model as well.
Fredrik Glöckner has done some experiments with narrower models with
fully independent suspension. See
http://www.math.uio.no/~fredrigl/technic/8880-suspension/ for
example.
RE> I thought the robotics community would like this idea.
RE> -Rich
RE> Note: you may need to view in raw mode.
Regards,
Johannes.
--
> > > POLICE LINE<<<>>>DO NOT CROSS<<>>>POLICE LINE<<<>>>DO NOT CROSS<<>>>POLICE L
> > > DO NOT CROSS<<>>>POLICE LINE<<<>>>DO NOT CROSS<<>>>POLICE LINE<<<>>>DO NOT C
Self-professed nerd of Mathematics and Computer Science.
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Message is in Reply To:
 | | Universal Joints
|
| While building the 8448, I was dissapointed to see universal joints used in the drive for the suspension system. My experiance with these in the past was not the best. The axel holder end will crack under stress. I am leery to motorize the model (...) (25 years ago, 29-Dec-99, to lugnet.robotics)
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