When you see the Petzl Chicane

[Burrapeg]

Burrapeg I can post more detailed pictures and measurements

Cool.

 

[treegongfu]

None of these measurements need be adhered to exactly I wouldn't think but they are working and I wouldn't deviate from them much without a reason to do so.

 

[treegongfu]

That is slightly wider than a standard #60 chain link. I think it could be made slightly wider.

 

[treegongfu]

Next two are attempting to show that the bottom arm pivot point is elevated and it is important in applying correct frictionby

Also there are sleeve inserts passing through the side plates that the bolts go through. It helps to bind the two plates together.

 

[treegongfu]

A swivel version

 

[treegongfu]

This top arm works just as well and has more metal around the bolt for strength and it is lighter

 

[treegongfu]

All done. Let me know if I missed anything.

The top arm spring needs to be moved up to the top arm somehow. As it is too much torque causes the lower link to move in such a way as too create tending drag.

Either that or create the initiating friction differently.

Surveyor explained another way too me in a previous post but I cldn't figure it out.

 

[Burrapeg]

Thanks for the photos and dimensions, Treegongfu. I have some time next week and might have a go at making one. It looks very interesting.

 

[treegongfu]

I look forward to seeing it.