Subject:
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building a bicycle -- can it be done?
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Newsgroups:
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lugnet.loc.au
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Date:
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Fri, 1 Sep 2000 02:41:00 GMT
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Viewed:
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447 times
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My husband (a keen cyclist) asked me if I could build a geared bicycle with
a derailleur using Lego. Your thoughts?
Obviously, I will need a fair bit of chain, but the new Power Puller may
solve that problem. The cluster will need to have at two slightly-different
sized gear wheels (I thought I'd start with just 2 gears!). I was thinking I
might be able to use a flex system to pull the chain between the gears and
use a spring suspension piece to keep the tension on the derailleur.
How would I get the bike to coast, or would the pedals have to turn with the
wheels?
And finally, I assume that the model would end up fairly large because of
the complexity of the chain and cluster. However, this will mean that I will
need to find really large wheels? What are the largest wheels around? Being
a bicycle, I'll be wanting relatively narrow tyres.
Note, I'm not building this yet, just thinking about it. I'm still building
my photocopier, but keep getting distracted by buying new sets.
Kerry
--
Kerry Raymond
kerry@dstc.edu.au
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Message has 1 Reply:
 | | Re: building a bicycle -- can it be done?
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| The biggest problem you will find is that each LEGO Technic gear is one brick wide, except for the smallest one which is slightly more than a brick wide. Set up four or five of these side by side and your bicycle is going to look more like an (...) (24 years ago, 1-Sep-00, to lugnet.loc.au)
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