Compact Bulldog OAR

Yes, I would say so, especially if you pull and hold the bottom arm first, then tweak the middle arm as shown.
There are 2 users at this point, and both have given enthusiastic feedback. In MRS it can be released by pulling the top arm only, but I prefer the method shown. My thinking is it will allow SRT ascent and then self tending MRS work positioning.
 
4 arm OAR, works MRS and SRT. a nano swivel can be installed in place of the bottom teardrop attach point. Tends well as it forms that nice curved shape pictured when manually tending.

Vib8odb.jpg
 
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Did a little climbing on the Compact Bulldog OAR, works perfectly as a lanyard adjuster. Tried it as an SRS multicender on Sterling Ropes Tendril 11.1mm line, butter smooth on descent, no initial resistance on the release, super sensitive one-hand adjustment, very controllable. In MRS mode works well not quite as smooth as SRS mode.

I had it creep a little in SRS descent mode but could not reproduce the creep consistently. When you load it up holds every time. It slipped after I stopped descent a couple of times. More time on it needed to figure out what was going on. Rope is brand new, not broken in.

In SRS mode, pull down on the middle arm to release as Gordon smartly indicates by putting the black rubber knobs, smoothest multicender I've experienced yet, equivalent to or better than a hitch.
50923902291_650e4ecdea_c.jpg


MRS mode, very functional for when you want to do it
50923215803_324e1756f0_c.jpg


-AJ
 
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That looks nice! To my eyes though, it seems it would be a prime candidate for being made fully riveted.
 
The pins could be held with the clips and riveted. The brass washers are intended to prevent the clip from moving in that direction, and are installed after the clip is installed.

the bottom arm has a small steel bollard that turns (outboard pin). Moss, Thank you for giving the OAR a go and giving your thoughts about this device. How do you find the manual tending, when taking up slack? Nice pictures!

Addendum: In MRS the rope can be terminated at the Bridge also if desired, rather than the double teardrop.
 
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surveyor said:
The pins could be held with the clips and riveted. The brass washers are intended to prevent the clip from moving in that direction, and are installed after the clip is installed.

the bottom arm has a small steel bollard that turns (outboard pin). Moss, Thank you for giving the OAR a go and giving your thoughts about this device. How do you find the manual tending, when taking up slack? Nice pictures!

Addendum: In MRS the rope can be terminated at the Bridge also if desired, rather than the double teardrop.
Click to expand...

Manual tending is excellent. When I clip my bungee tender to the second anchor point it rides up no resistance during SRS ascent. When I was resetting my anchor I got some resistance pulling slack though the opposite direction, I fiddled a little and found that if I isolated the bottom arm from the upper two with my free hand I could pull the rope up through the device easier.
-AJ
 
So overall does the OAR perform better with the three or four arms? Which is smoothest? Which is more consistent across varied/specific rope selection?
 
The four arm OAR is grippier than the regular OAR as expected, but is about 3 oz. heavier. They both release and tend about the same, perhaps the four arm self tends a bit better by virtue of the fact that it tends from the very top of the device, and so the crab is above the device, rather than beside the device, like it is with the double teardrop. The top arm acts as a small rope wrench, while the bottom arms act like a mechanical hitch, which contributes to its smooth release when used SRT. I find that by using the slightly larger dia. rivets on the top arm pictured (0.25" as compared to the 0.234" link pins), this causes the gripping force of the regular OAR to be increased by 30% using Sterling Tendril 11.1mm rope, as compared to the one Moss is using, so I plan to incorporate this into any OAR moving forward. (Moss I could retro fit yours with the stainless steel rivets on the top arm if you like)

I would say the range of rope sizes useful with the OAR are similar to that of the adjustable Bulldog Bone.
 
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Not necessarily as the top and middle arm(s) gap on that OAR is 0.516"x 0.5625". The bottom arm has the small outboard bollard, so is a bit less than 0.5 on the smaller dimension there. I just like how it tends and releases on my Sterling 11.1mm rope.
 
So here is the OAR (11.1 oz.) with fully riveted stainless steel friction rivets. I found out they make semi tubular rivets that are hollow only on the end that is "set", the rest is solid. This works well when there is a gap between the ss arms as with the OAR.
The OAR shown will hold about 440 lbs (max) on a single Sterling Tendril 11.1mm line, before creeping, as per my test with the Enforcer.

6ILrBFT.jpg
 
moss said:
Did a little climbing on the Compact Bulldog OAR, works perfectly as a lanyard adjuster. Tried it as an SRS multicender on Sterling Ropes Tendril 11.1mm line, butter smooth on descent, no initial resistance on the release, super sensitive one-hand adjustment, very controllable. In MRS mode works well not quite as smooth as SRS mode.

I had it creep a little in SRS descent mode but could not reproduce the creep consistently. When you load it up holds every time. It slipped after I stopped descent a couple of times. More time on it needed to figure out what was going on. Rope is brand new, not broken in.

In SRS mode, pull down on the middle arm to release as Gordon smartly indicates by putting the black rubber knobs, smoothest multicender I've experienced yet, equivalent to or better than a hitch.
50923902291_650e4ecdea_c.jpg


MRS mode, very functional for when you want to do it
50923215803_324e1756f0_c.jpg


-AJ
Click to expand...
Hey moss. How does it perform in MRS mode compared to a well dial Hitch Climber setup?
 
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