Subject:
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Re: How much weight can a LEGO chassis carry around?
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 9 Dec 2005 16:17:15 GMT
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Original-From:
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Nathan Colyer <ncoly1@eq{NoMoreSpam}.edu.au>
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Viewed:
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1164 times
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>
> So - who's up for building the first ever human-rideable Lego robot?
>
> That would be *so* cool!
It might work to make a robot that tows the laptop on a trailer setup? At
a parent night at my school, I towed small children on a trailer (a couple
of physics crash carts that they stood on like skatebaords), using a simple
robot driven by two motors, large (40 tooth?) gears driving the smallest (8
tooth?) gears. Robot could tow approx 30kg in weight, before tires started
slipping - friction was the limiting factor, rather than stalling of motors.
Just for interest, we put a stack of textbooks about 1.5m high on the carts
- robot pulled them with ease - looked impressive!
_______________________________________________
Nathan Colyer
Science, Maths, Robotics Teacher
ncoly1@eq.edu.au
Tully State High School
www.tullyshs.qld.edu.au
Ph: 4068 4555
Fax: 4068 4500
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Message has 1 Reply:
 | | Re: How much weight can a LEGO chassis carry around?
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| (...) Ah, sort of the 18-wheeler approach to carrying heavy loads. That's not a bad idea; certainly it solves the axle-support and skid-steering problems. But it makes the steering code a much harder problem, doesn't it? I can imagine my poor bot (...) (19 years ago, 9-Dec-05, to lugnet.robotics, FTX)
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Message is in Reply To:
| | Re: How much weight can a LEGO chassis carry around?
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| (...) The Achilles heal is the bearing ability of a cross axle in a hole. Above a certain load, you will make a constant supply of ABS dust, which means you will have to replace a few key pieces from time to time. Beyond the actual bearing surface (...) (19 years ago, 9-Dec-05, to lugnet.robotics)
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