Subject:
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Re: Dennis Bossman's crane
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Newsgroups:
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lugnet.technic
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Date:
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Wed, 13 Oct 2004 16:58:51 GMT
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Viewed:
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2952 times
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The pump lowers the front legs and raises the trailer off of the tractor. With
the dozer on the trailer, it takes about 28 pumps; without the dozer it takes
about 23.
I have never been to that website before, but it has good ideas on it. The
joystick design I used is similar to the "Wirlwind Rescue" chopper design from
1990 (I don't know the number). Do I need to put more pictures on brickshelf?
Maybe on lugnet.
No one has asked, but the reason that the track hoe arm is different from the
real thing is because 2 pistons back to back are strong enough to lift the arm
(4 are not needed). At the elbow, the pistons are side-by-side and not
back-to-back because Lego pistons do not pull (retract) with enough force. 2
side-by-side pull better than 2 end-to-end. Also, the telehandler will probably
use the last 5 of my big pistons- if so, none will be left for the track-hoe.
I'm sorry if I gave too much information.
Nathan
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Message has 1 Reply:
Message is in Reply To:
 | | Re: Dennis Bossman's crane
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| (...) Does it lower & raise the side stands? How many pumps does it take to do so? (...) Did you use the joystick design on this (URL) site? (...) Ha! spotted immediately! (...) Nice. (...) - David (20 years ago, 12-Oct-04, to lugnet.technic)
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