Telescoping arm

[AdamHeard]

Originally Posted by Jeff 888

but what do you do when you have a 3" 2" and 1" box tubing in side of one another like this http://www.chiefdelphi.com/media/photos/20400
and http://www.chiefdelphi.com/media/photos/18173

It looks more like 4-6", 2-3" and 1"... I think they have varied it slightly year to year, If you read through some of the discussions on the 04,05 and 07 robots from 233, I think it says what sizes they use. It's the exact same principle, except the sliders are inside of each other rather than next to each other.

[Gene F]

We (Team 343-Metal in Motion) used a three segment arm like 233 this year. We drove the first section with a lead screw and a cable was wrapped around two pullies on the second. (Similar to the diagram above). We used box tubing of 3X2" for the first stage, 2X1.5" for the second and 1X1" for the third. We had intended to do the cut outs like 233 but didn't need the weight so we left them whole. If you're looking for more details, PM me and I can send you the cad drawings.

[David Guzman]

This might help you out.

From our 2005 robot

http://www.chiefdelphi.com/forums/sh...98&postcount=6

EDIT: We used 3X3, 2X2 and 1X1

Robot pic: http://www.chiefdelphi.com/media/photos/20333

[Triple B]

The design you are inquiring about for the telescoping tower used 4", 2.5", and 1" tubing. I can elaborate on the chain routing if you like.
mike d

[Peter Matteson]

We traditionally have used widow tape to minimize the profile when we build extension arms. This style easily fits into a three piece extension.because it is only 1/8" thick and utilizes internal pulleys.
Pete

[Jeff 801]

Originally Posted by Triple B

The design you are inquiring about for the telescoping tower used 4", 2.5", and 1" tubing. I can elaborate on the chain routing if you like.
mike d

YES please !