pic: #171 is back for more!

[sanddrag]

What takes the hook up? Winch? Rack and pinion?

[Beast314]

Originally Posted by sanddrag

What takes the hook up? Winch? Rack and pinion?

It's telescoping. There is a 1/4" pitch chain in the inner portion of the boom. The chain is held in at both ends. That's run up then by the Van Door motor with a sprocket on it.

[sanddrag]

Originally Posted by Beast314

It's telescoping. There is a 1/4" pitch chain in the inner portion of the boom. The chain is held in at both ends. That's run up then by the Van Door motor with a sprocket on it.

Is the chain just runing a tanget to the sprocket or is it somehow wrapped around somewhat. Could you post a picture, it sounds very interesting.

[Beast314]

Originally Posted by sanddrag

Is the chain just runing a tanget to the sprocket or is it somehow wrapped around somewhat. Could you post a picture, it sounds very interesting.

I don't have a good pic for you right now. The chain runs tangent to the sprocket. If you've used Bosh, 80/20, or anything like it you'll find it has channels in it on each side. The chain we use fits in that channel such that it runs in tangent to the sprocket. With the motor fixed and the chain fixed on both ends to the inner tubing it will run up or down. Hope this helps to clarify things, I'll try to get a pic for you though.