DMM Offya

chris_girard · Aug 24, 2019

Been using both systems for awhile now and really like them.

climbjared · Jul 30, 2021

Hello! I’m curious to know if anyone has thoughts on rope elasticity for the English Reeve method? It seems some is appropriate to accommodate bigger weights but not too much.
-Jared

flushcut · Jul 31, 2021

Tom Dunlap said:
Is the Offya on the market yet?

How much?

If you have to ask you can't afford it. lol

evo · Jul 31, 2021

climbjared said:
Hello! I’m curious to know if anyone has thoughts on rope elasticity for the English Reeve method? It seems some is appropriate to accommodate bigger weights but not too much.
-Jared

Well that all depends on the situation. Having some give in the rope helps mitigate the high line being too flat, and if you are just doing static picks less stretch the better (it’s a pulley system for lifting and hauling). The system uses a shit ton of rope and many arborist double braid rigging lines are about 10% at working load limit. It’s very easy to use up 200’ of line and if it’s pushed to the limit that’s 20’ of stretch or sag..

Tom Dunlap · Jul 31, 2021

flushcut said:
If you have to ask you can't afford it. lol

YOu're right! My solution was to do business with Seat of the Pants Engineering to bring the same concept to life using ½"x 4" flat steel. Clip some pulleys in and go to work.

Not as elegant but for such occasional use SPE fit my budget. They handled job scheduling and change orders nicely too LOL And...the owner is an easy guy to get along with.

Jonny · Jul 31, 2021

Y’all seen the DMM XS impact block?
Looks damn useful with that attachable spot in the center.

Chaplain242 · Aug 1, 2021

Jonny said:
Y’all seen the DMM XS impact block?
Looks damn useful with that attachable spot in the center.

View attachment 77204 View attachment 77205

With a price tag to match the bling factor..

flushcut · Aug 1, 2021

Chaplain242 said:
With a price tag to match the bling factor..

Holy sheep shit $450!

Dan Cobb · Aug 1, 2021

Does anyone else find it funny that they named a piece of life safety equipment Offya, as in "Switchblade Mickey said he's gonna off ya"?

climbjared · Aug 2, 2021

evo said:
Well that all depends on the situation. Having some give in the rope helps mitigate the high line being too flat, and if you are just doing static picks less stretch the better (it’s a pulley system for lifting and hauling). The system uses a shit ton of rope and many arborist double braid rigging lines are about 10% at working load limit. It’s very easy to use up 200’ of line and if it’s pushed to the limit that’s 20’ of stretch or sag..

That’s basically what I’m estimating. I’m looking at less stretch than regular New England sta-set but not fully static. Thanks for the input!

climbjared · Aug 4, 2021

Regarding the DMM Keanu, this is from Taylor Hamel at DMM.
“We recommend you keep loads well below the WLL. It is quite easy to generate large amounts of force even when working in a slow and controlled manner. The simple act of winching up a stationary load will translate to a force larger than the load itself on the Keanu due to friction in the system, rope angles, etc. Throughout our testing in general we found a roughly 3x force increase simply while moving a suspended load along the high line.”