I’ve got some resc tech 8mm and trc 6mm rope that I considered making an adjustable bridge out of. I was curious how some of you made yours and what friction hitch you used? Drop some photos if you could or any links to videos!
This is one of my favorite ways to do my bridge connection.
I tried amsteel. When tight it was extremely difficult to get loose. Plus amsteel does not recommend using their product this way. So I got 4' of oplux, some sterling TRC and out of one piece of cord I tied a Michoacan friction hitch on my oplux bridge. I then tied a prusik on my bridge loop and finally closed it with a hunters bend. I did this on both bridge loops. Easy to adjust post load. Very happy with it.I’ve got some resc tech 8mm and trc 6mm rope that I considered making an adjustable bridge out of. I was curious how some of you made yours and what friction hitch you used? Drop some photos if you could or any links to videos!
I like a double wrap holds a little better than a girth hitch but easier to adjust than a 3 wrap…I have learned that a simple girth hitch is all I need on the bridge loops.
A three wrap prusik is too hard to adjust...
I like a double wrap holds a little better than a girth hitch but easier to adjust than a 3 wrap…
Here ya go… a single girth hitch, while easy to adjust slides slowly at extreme angles so while it holds good it won’t stay put as you are weighed in it constantly. 3 wrap prusiks like some saddles use to attach hold great and they widen the bridge loop angle which can help alleviate some types of pinch you might feel, but they are very hard to adjust with one hand. A double wrap prusik is essentially a double girth hitch. It provides plenty of holding power in any angle on the bridge loop, and increases the angle some what, while still being easy to adjust with one hand once you take some weight off of it.Have any photos you could share?
See my problem with oplux is that it’s not as strong as I would like. And it requires such small hitch cord for the friction hitch. No one can shorten their bridge without removing their weight from it, but with my amsteel bridge, I can lengthen it while loaded if I want. I can also adjust it with the use of one hand. But I also don’t use the traditional set ups of the utilibridge or the triad. So with oplux, I get a rope that isn’t near as strong, is more susceptible to bend radius and ultraviolet degradation. The only benefit is that it has a high melting point (900 degrees) but if your friction knot bites down as hard as amsteel does, friction will never be produced enough to cause the amsteel to fail. So all those knots in oplux would reduce its strength to below 3000 lbs however since a bridge is in doubled rope configuration I am sure it’s plenty strong enough. Just not my favorite for a bridge I’d use old fashion 11mm predator rope before I’d use oplux. I’m weird like thatI tried amsteel. When tight it was extremely difficult to get loose. Plus amsteel does not recommend using their product this way. So I got 4' of oplux, some sterling TRC and out of one piece of cord I tied a Michoacan friction hitch on my oplux bridge. I then tied a prusik on my bridge loop and finally closed it with a hunters bend. I did this on both bridge loops. Easy to adjust post load. Very happy with it.
@Mschmeiske here is one more of the full length and size reference for the bridge. View attachment 51199
I am running a Blake’s hitch. You had to go to smaller diameter to get your hitch to bite, the Blake’s hitch is the only friction hitch that allows you to use rope of the same diameter! Since the bridge is doubled rope, I use the Blake’s. It is essentially the exact same set up as an arborist climbing ddrt with an open system configurationWhat kinds stopper knot funny business is going on with the hitch to bridge? You running a Blake’s? How do you like that? I’ve only used a Schwabish and it can lock down too tight to adjust even when unweighted. I’m also using 1/4 bridge and 3/16 hitch, so that may be contributing.
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I love it. It bites incredibly well when it’s weighted, it can be lengthened while under weight, and can be unweighted and shortened with the use of one hand.What kinda stopper knot funny business is going on with the hitch to bridge? You running a Blake’s? How do you like that? I’ve only used a Schwabish and it can lock down too tight to adjust even when unweighted. I’m also using 1/4 bridge and 3/16 hitch, so that may be contributing.
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