Subject:
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Motors in parallel and stuff...
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Newsgroups:
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lugnet.technic
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Date:
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Thu, 1 Aug 2002 00:58:02 GMT
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Viewed:
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710 times
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Hi all,
I'm sure many of you have much more experience working with drive trains than I
have, so I'd like your advice.
I'm working on a six wheel (well, actually, six wheg[1]) drive robot with two
points of articulation (for steering). Thus, I basically need to power a
drive shaft that runs through the hinges with universal joints, and then at
three points along the drive shaft, I need to drive axles perpendicular to the
shaft. The problem is, the output has to be high torque, and high speed (no
less than 40 rpm, preferably over 100 rpm).
I have a bunch of geared motors thanks to ZNAP, and i also have 5 old
ungeared 9V motors. With how many motors do I get the best power to weight?
How many batteries do I need to add when I use extra motors? What's the best
or most durable way to change direction from the shaft to the axle? Any
suggestions on gearing?
Thanks for the help!
--Bram
1) http://biorobots.cwru.edu/projects/whegs/
Bram Lambrecht
bram@cwru.edu
www.bldesign.org
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Message has 3 Replies:
 | | Re: Motors in parallel and stuff...
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| (...) One suggestion - you might wanna investigate the new CV joints from the 4x4 instead of universals - this may give you more torque & less back-lash through the hinges. May be tricky to mount them though... ROSCO (22 years ago, 1-Aug-02, to lugnet.technic)
| | | Re: Motors in parallel and stuff...
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| (...) Hi Bram, I'd use the new geared motors. They draw less power that the non-geared ones (old style) and their internal gear reduction seems more efficient than one built from normal Lego gears. Good motor reference: (URL) for how many, that's a (...) (22 years ago, 1-Aug-02, to lugnet.technic)
| | | Re: Motors in parallel and stuff...
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| (...) I'm thinking that the most efficient thing is to use one motor for each axle. That will save you the universal joints, and it will also impose less friction on the drive train. The solution isn't that technically interesting, but if efficiency (...) (22 years ago, 1-Aug-02, to lugnet.technic)
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