Subject:
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Re: Technic question: how to connect 2 technic beams
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Newsgroups:
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lugnet.technic
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Date:
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Thu, 6 Oct 2005 16:06:35 GMT
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Viewed:
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4485 times
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In lugnet.technic, Jeff Shiner wrote:
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In lugnet.technic, Nathan Bell wrote:
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I have a need to strongly connect two technic beams (one on top of each
other). Simply attaching them on top of each other (with Lego studs) is
not strong enough for my use. I am assuming that I need to somehow
brace them through the side holes but can not figure out how.
I need there to be just the two technic beams and can not space them
with Lego plates so I can not seem to strengthen them with liftarms as
they don’t fit nicely with just 2 beams. (ok... at least I don’t know
how to make them fit).
Any of that make sense?
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How many studs of overlap can you have? Also, how much space can you have
on the sides?
A tacky way to solve the problem would be to run a string through the holes
in a spiral type fasion and then tie the ends together. Hey; no one can say
it doesn’t work!
BTW, what is this design for? If you show some pictures I might be able to
alter your constraints.
Nathan
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Thanks for your suggestions.
I have a number of restrictions for this specific design... but have been
wondering in general the best way. (So far I think Mark has the best
suggestion using an offset cam).
For this specific project I am attempting to build my first pneumatic Lego
project. I have chosen a cherry picker because my 5yr old son and I were
given a ride up on one at a local fair. I’m building the bottom arm
connection. (I’ll have to find a digital camera I can use and provide a
picture)
My restrictions for this design are the following:
1. Studded technic beams (simply because I have them in quantity)
2. A max height of 2 beams (with a bit of extra room on top... say 1 plate
height... but it has to be on top, not between the beams)
3. I only have access to one side of the beams. The other is up tight
against other beams (but needs to move up/down relative to them)
4. Will not cut, glue or otherwise modify the Lego
Again... thanks for all the help.
- Jeff
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The offset cam will be too tight. I believe Zoltan Schuster and Dennis Bossman
have the solution. Turn one beam upsidedown and leave the other right side up
This will make the verticle distance between the holes exactly the 45 degree
diagonal distance between the holes of a 2X2 brick. Lay a 2X2 flat brick down
in front of you, rotate it up 90 degrees and then clockwise or counterclockwise
45 degrees. I don’t know what they are called, but there is a axle-toggle joint
that has 2/3 of one end cut off (they are light-gray or blue) and is ideal for
connecting the diagonal 2X2 brick to the 2 studs. Stagger at least 2 on eack
side. It works very well. Sorry I don’t have any pictures. Maybe someone else
can help me out with a picture. (This idea is typically used to put 2 old
pneumatic pistons back to back).
Nathan
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Message is in Reply To:
 | | Re: Technic question: how to connect 2 technic beams
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| (...) Thanks for your suggestions. I have a number of restrictions for this specific design... but have been wondering in general the best way. (So far I think Mark has the best suggestion using an offset cam). For this specific project I am (...) (19 years ago, 6-Oct-05, to lugnet.technic, FTX)
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