TreeMotion bridge break test and more.

Tom Dunlap said:
The tests are confidence building. Nice to see scuffed up gear still retain so much strength.

What is the shortest piece of rope or webbing that you need for pulling?

I've got lots of used soft and hard gear that could be broken We talked about breaking a chunk of that three strand Manila Green Stripe I had at Jambo in St. Louis. Lots of very old Arborplex that has been on the shelf for years too

Thanks for taking the time to test and share
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I have a 12 foot pull cage and 3 feet of pull up to 25,000 , pounds.
 
evo said:
Just finished the video. NICE job! this is the most valuable video you have made (to me at least). Question on the stock TM bridge: Did the core fail or pull out of the cover? It appears that the length of the core either stretched, pulled out, or the cover bunched up a lot!
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Funny, someone else commented these values will never be needed so, what's the point, worthless.
Mostly the core pulled out of the stopper knot. I used to think the tail was just something to watch the knot, but watch that tail get pulled into the knot when loaded.
 
DSMc said:
It would be interesting if the MCRS bridge would test out any differently if tested as it comes on the harness. That is with anchor bends tied onto fat rings. I was impressed how well both bridges did on the DMM hardware as the stopper knots do get loaded sideways to the plate making that first bend relatively sharp.
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Someone else noted it always breaks at the same plate, that plate had scratches or corrosion more than the other.
Yes, those plates are shaped such that it creates an almost cutting wedge.
 
I know that it would come at a higher maintenance price but I am surprised that the offer is not in place to have your Treemotion be able to be sent back for the bridges to be spliced or sewn eyed on for replacement plus refabs, like Danners offers for their boots. I get you would need a backup harness but let’s be honest, most of us would pay that price .... most not all
 
Fairfield said:
I know that it would come at a higher maintenance price but I am surprised that the offer is not in place to have your Treemotion be able to be sent back for the bridges to be spliced or sewn eyed on for replacement plus refabs, like Danners offers for their boots. I get you would need a backup harness but let’s be honest, most of us would pay that price .... most not all
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I hear a lot of complaints about having to pay $20 for a new bridge vs being able to buy globe by the foot. I can't imagine most production climbers would see that as anything but a scheme to milk them of more money. Keeping it simple and doable by the end user are two qualities that are consistently echoed as to priorities among climbers, and I agree with them.
 
Crimsonking said:
I hear a lot of complaints about having to pay $20 for a new bridge vs being able to buy globe by the foot. I can't imagine most production climbers would see that as anything but a scheme to milk them of more money. Keeping it simple and doable by the end user are two qualities that are consistently echoed as to priorities among climbers, and I agree with them.
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Seems obvious but branding and marketing can be a powerful thing. Scare tactics vs. education not to mention adding layers of liability or perceived liability.
 
Crimsonking said:
I hear a lot of complaints about having to pay $20 for a new bridge vs being able to buy globe by the foot. I can't imagine most production climbers would see that as anything but a scheme to milk them of more money. Keeping it simple and doable by the end user are two qualities that are consistently echoed as to priorities among climbers, and I agree with them.
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Yes $20 for a few feet of rope is expensive. However this break test should show you that some high mod lines are very slippery. This is why they run a bar tack on either end. The micro cord is spec’d to be tied with triple fishermans to make a loop for this very reason.

My guess is the big T is concerned a sloppy knot and a in stitched tail could result in the core being pulled out, under repetitive bouncing. Instead of micro management they likely pulled the product from the arborist line up. I think you can still but the same rope under marine applications (different name I would guess)
 
evo said:
Yes $20 for a few feet of rope is expensive. However this break test should show you that some high mod lines are very slippery. This is why they run a bar tack on either end. The micro cord is spec’d to be tied with triple fishermans to make a loop for this very reason.

My guess is the big T is concerned a sloppy knot and a in stitched tail could result in the core being pulled out, under repetitive bouncing. Instead of micro management they likely pulled the product from the arborist line up. I think you can still but the same rope under marine applications (different name I would guess)
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Sorry, I didn't do well finishing my full thought. My main purpose was to highlight the production climber's tendencies in regard to these matters. When I said I agreed, I didn't mean concerning the $20 bridge, but keeping things simple and doable by the end user rather than needing to be shipped off for replacing the bridge.

I'm okay with the current replacement situation. I wasn't at first, but received better education on the matter that influenced my position. The slippery core matter is a great point- I've gotten to witness a pull test on all-gear pro force in person. I watched a scaffold knot unravel well below the rope's rating. It was a great experience and learning moment.
 
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