Bulldog OAR ascender/descender

[BenR]

Looks good! I'd always be happy to test new versions too. I like the potential the bulldog has.

[Old Mill Tree Care]

Having just watched the latest video I'm now seriously interested in this. I've been reading the threads on all forums with mild interest but seeing it in action on SRT and DRT has swung it for me.

I've enjoyed using a ZK1 and I'm loving my HH but I've felt more comfortable on mechanical devices.

When will I be able to get one of these on my rope?

[surveyor]

Old Mill, I can make one for you now.

PM me and we can discuss the details.

 

Thanks, Gordon

[surveyor]

Here is the OAR in an O-rig configuration (single action biner for demonstration only). If the standing end of the rope is threaded as shown, between the top arm link and top attach point, then down through the biner, it creates a small bend in the standing line which holds it in place, much like a prussic. The OAR can then be advanced completely out of reach if so desired, as long as you have a tether on the slack tending quick release pin. (thanks to Thomas , Justin, and Brian for their input for this idea )

 

 

[surveyor]

Here is an OAR set up for a doubled rope with O rig. I am trying to tidy it up a bit by using the spliced eye on the shackle, with a beeline eye and eye attached directly on the top link, and the other end on the shackle pin below. The advantage with the OAR, as I see it this way, is that the OAR does not need a biner nor a pulley (the hole on the bottom arm is for a roller with quick release pin for an axle if desired). Also it has virtually no sitback and slack can be tended nicely if limb walking, by self advancing the OAR above yourself by pulling the slack down through the OAR. Did I mention it is midline attachable also : )

Edited May 18, 2013 by surveyor

[Arran Turner]

What is the costs to have one sent to the UK ?

[nifty]

hey mate,

 

i always admire a bit of home engineering! fair play to ya, its coming along very well:thumbup1:

 

i just wanna ask with the pulley rack on a ddrt set up will it self tend once there is rope weight?

 

N

[surveyor]

The pulley/rack I made (before the public release of the ZZ) was actually intended for SRT use. I have tried it low on a doubled rope, but since the headstock faced the standing part of the rope it was a bit awkward with my longer headstock. I have not had it high enough to answer your question about it self tailing with rope weight below.

[ame=http://www.youtube.com/watch?v=8czYPRuL8t4]demonstration video of pulley/rack - YouTube[/ame]

[surveyor]

Tried the OAR to see if it will self tail with my orange Tachyon with a bit of weight on the tail.

 

[TKO]

Love the look of that pulley/rack, would love to give that a whirl! I climb predominately SRTWP and have been waiting for somebody to bring something like this to the table (seeing as I can't get ahold of the rope runner till 2014). I also like the way this can be geared up to different sizes of rope!

 

Is the rack made out of steel components? Would you be able to tell me how the rack is anchored to the hitchclimber?

 

Some of the guys on here have been making hitchclimber-zigzag hybrids but I'm not too sure if I'd trust that setup given the recent revelations regarding the zigzag. Plus I don't think they've designed it for SRTWP.

 

Keep up the good work

 

Cheers!