surveyor
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Everything posted by surveyor
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Ben, Thanks for the review of the 4 arm Bulldog OAR. I am excited about the 3 arm OAR with the adjustable anchor as it adds versatility to the device. Not only is it not as physical large as the one you reviewed, but since the anchor point can be adjusted you can fine tune the grip to be used on different ropes and climber weights. The anchor point is also a clevis. Since the release is with the bottom arm of the OAR, the upper arms do act just like an integral RW and descent is very smooth and controlled.
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I have refined the attach point so that it is now adjustable with the brass thumb nut. With the three arms pictured I can now adjust the grip of the OAR so that it will grip with my weight on the narrowest rope I have (KMIII) SRT. I am in the process of testing on the various ropes I have. This should be useful with only two arms on the larger dia. ropes.
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The short piece of PI that I have seems to be less dense than the Tachyon and so it compresses more readily.
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In my experience Bing! the PI will slip with 2 arms on the OAR .
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Don't do it! Keep it simple. this is a self tender.
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Bing! This idea works well for your tachyon rope. The anchor point as shown for a doubled rope forces the bottom arm up more aggresively when weighted by the climbers weight, so that the clamping force on the rope is increased, and it advances a bit better also I believe. The release is a bit different also as you need to pull down with about 5 lbs. of force to inititate release. You can anchor also at either the inline anchor only (with the spine as normal) or the outboard anchor only, which causes it to work well for my weight on the tachyon for SRT
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Ben and Bing, I look forward to your review. You may try this also , as I have taken inspiration from the Hitch Hiker for SRT. Tie a 6mm hitch cord above the OAR and thread the tails down through the OAR between the arms and behind the rollers, then tie a stopper knot below the bottom arm. It then releases on a single line with the hitch as normal while the OAR provides the extra friction.
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Did I hear the HH will come out with a nickel plated special edition?
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I sent it with the same size rollers (3/4") as the one you have.
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Creeping or slipping is no good. I have used it with the KMIII and it needed a larger dia. roller on the bottom arm to function properly. I know that bing uses an O rig set up with it on a doubled rope (tachyon) with just two arms. Here is an idea for the O rig that is easily installed.
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Ben, yes, to remove the top arm, I use a plier and squeeze the retaining clip off the slotted pin (just remember to align the clip and the slots before squeezing it back on if you reinstall the top arm later). Then remove the side plate and aluminum arm on that same side and remove the single pin, top attach point, and the rest of the top arm. You will be left with a top attach point that has 5/16" holes, rather than the 9/16" hole, which means you will have to put a 5/16" shackle through the top attach point in order to have something to clip into there. Thanks, Gordon
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Hmmm, it might shoot a potato through the reducer. : )
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Ok here is the video. [ame=http://www.youtube.com/watch?v=9WEO0Kp6ZyQ]Air Cannon - YouTube[/ame]
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I made an Air powered cannon yesterday. It shoots a rubber handball approx. 200' straight up into the air and makes an impressive FWHOOOMP! sound as it fires off. A lady was walking down the road in front of our yard as the boys and I where launching a shot, and exclaimed "Oh Wow!" when it fired. video to follow. The launch ball also acts as the quick release ball valve.
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I think it says from one source that you can select from 3 different strength charges that yield 40, 60 or 80 yards without a line attached. Andy beat me to it.
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Lucky Line Launcher, looks useful. Line Launcher - Cascade Rescue Company
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Back to the drawing board with the hyper sling being used as a throwline launcher, not enough ooomph. However, my dog is saying oh boy! oh boy! oh boy!
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I just made the throw ball. It helps to fill the ball with silicone sealant or goop glue before inserting the wire clip with tied loop attached. It may be better to just have a short line attached to the ball in this way rather than a loop.
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I ordered the sling also. I hope to use it with a rubber handball as the the throw weight. Maybe force a spring clip, tied to a short throwline loop, into a small cut in the ball, then clip in to my target line with that. I figure if that does not work out my dog will be a happy camper anyway!
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Looks like I will be sending my Bulldog demo OAR to you Dan. As I stated in my PM, the Bulldog is configurable to 2, 3 or 4 arms. Even the roller size is interchangable, and Bing has made his rollers into sheaves. For myself, I like the 3 arm OAR best, as this works well on Tachyon with my weight (75kg) for both SRT and DdRT.
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Hello Dan, yes i can ship worldwide. Gordon (off to work for now, check in later)
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I have the four arm demo OAR (above right, in the picture above) available to anyone who would like to try it. This four arm OAR can be dissembled and converted to the two arm OAR like Bing uses for DdRT. The four arm OAR is intended for use SRT on 1/2" or 7/16" rope. Please just send postage (25.00) to cover my shipping costs, and then ship it back when you are done giving it a test. Thanks, Gordon
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Slack tending a hitch climber? (not the obvious way)
surveyor replied to YoGi_93's topic in Climbers talk
Well.... my wife is a very tolerant woman. The picture was taken about 20' from my shop/office and there is a well worn path between. My two youngest seem to enjoy the gadgets I bring home and have even climbed with them a bit now and again. -
Slack tending a hitch climber? (not the obvious way)
surveyor replied to YoGi_93's topic in Climbers talk
I have a tibloc that I ground all the inner teeth off the inside surface to see if it would work as a mini hitch hiker. I doubt it would work to hold in an O rig setup, but if I get a chance I will try it out and see. -
Neat pictures, and tidy tether. Glad the Dogbone is working for you. Gordon
