Subject:
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Re: Another Technic Creation
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Newsgroups:
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lugnet.technic
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Date:
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Tue, 14 Nov 2000 11:24:40 GMT
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Viewed:
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2016 times
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Bob Hayes wrote:
> Question: How do you get the
> pnematics to operate so smoothly?
I suppose the first thing is to ensure that the air can flow freely - an
earlier version of the model had a problem with one of the hoses on the main
boom kinking when the boom was raised. The problem only became apparent when
you tried to lower the boom, as the blocked hose then prevented air escaping
from the "upwards" cylinder.
The other thing is to get a good compressor. I experimented with loads of
different types for the Bobcat, and found that a variation on Michael
Powell's Tiny Compressor was best.
http://www.sonic.net/~rci/legocompressor.htm
I modified it by using gears instead of a belt drive and added a pressure cut
off switch. The excavator needed more power, so I added a second old style 9V
motor, which was very effective. It makes a great noise as well, as you can
hear in the video!
Jennifer Clark
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Message is in Reply To:
 | | Re: Another Technic Creation
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| Jennifer, Once again you have created a fantastic model and a great web page. Your first two models set a high standard and the excavator continues in that direction. Thank you for sharing your work. Question: How do you get the pnematics to operate (...) (24 years ago, 13-Nov-00, to lugnet.technic)
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