Telescoping tubes


Old 10-09-13, 06:23 PM
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Telescoping tubes

Hey guys, new here.

I gotta make myself a telescoping (extendable) tube with PVC pipes.
Problem is anyone knows how to make a lock system, so it can be locked any place, easily?

I know that some locks kinda press down on the exterior pipe, but if it's too rigid, will it work like this?

And how does the twisting lock systems work?

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Old 10-09-13, 06:51 PM
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Welcome to the forums! PVC outside diameter of one pipe will not fit really tight in the inside diameter of the next largest pipe. There will be some slack and movement. Not sure what size pipe you plan on using and what length, but if large enough, you could drill 1/4" holes equally spaced on all the pipes, and use a delrin pin run through both lengths once it is extended to your desired height. Remember, too, pvc is not very strong when it is used for purposes other than what it was intended.

I use electrical EMT conduit for cover poles for tarps at hunting camp. I crimp the end of the top piece to where it will fit in the binder hole of the tarp and fasten my tether rope to that.
Old 10-10-13, 05:33 AM
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Depending on the size of your tubing a compression fitting might work.

If you don't need much strength and a little movement is OK then you could try a rubber boot.

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