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There is a video here.

Man climbing

Basically I won't say I'm planning to do the same thing but would like to find out more behind how he did it. Someone told me the suction cups were intended for construction and not climbing but I'm not really sure.

The following which looks similar requires an air compressor. If it requires a small air compressor how did Steve do it?

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    Just in case you are planning a repeat, make sure to check out the current conditions on mountainproject – DudeOnRock Sep 6 '16 at 23:08
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+50

It looks like they were four NV11 Fairs Air Powered Suction Cups as pointed out by this article.

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It appears to be four of the NV11 Fairs Air Powered Suction Cup as already stated by Charlie Brumbaugh in his answer.

There are a lot of sources which claim that they were the used equipment. However, there is no real statement from the climber/police (!):

The man appeared to be relying on a series of NV11 Fairs Air Powered Suction Cups, which retail at $280.22 each. The product is marketed as able to lift up to 150 lbs, being ideally suited to picking up glass or stone surfaces.

From CNN

NV11 Fairs Air Powered Suction Cup

NV11 Fairs Air Powered Suction Cup

Semi-porous loads can be handled safely with this innovative air powered suction cup.

Ideal for textured glass or slightly porous stone surfaces, this unique Air Powered NV11 Fairs suction cup is designed for use with a compressed air supply to ensure optimum safety and provide peace of mind during lifting. The high-flow pad attaches quickly during operation without the need for pumping and has an extra tough all-metal handle. This specialist heavy duty suction cup is highly suited to lifted and setting of semi-porous paving and stone flooring tiles.

Key features:

  • Lifts 68kg
  • 250mm (10 inches) diameter lipped pad with closed cell foam ring
  • Supplied with protective carrying case
  • Vacuum is applied and released with quick action pump handle
  • Red line indicator warns of any vacuum loss
  • Supplied with 12 month warranty
  • Packaging Dimensions & Weight: 320x260x120mm
  • Weight 2.5kg (box)
  • Apply suction cup to dry, clean surface

  • Requires small air compressor (not sold by GGR Group)

  • Hand cup requires 2 SCFM [57 litres/minute] @ 75 psi [517 kPa]
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  • If it requires a small air compressor how did Steve do it? – William Sep 7 '16 at 20:16
  • @William Looks like it's in the backpack. – OddDeer Sep 8 '16 at 3:36
  • If you watch the video he is obviously hand pupping which means these can't be it. – William Sep 9 '16 at 0:15
  • @William "Vacuum is applied and released with quick action pump handle. Red line indicator warns of any vacuum loss." He's not pumping. Do you really believe that you can suck-on a human with three easy pumps? You have to activate the vacuum with the pump-handle by a pump movement. Also what do you think are the black wires into his backpack for? More badass design? :) – OddDeer Sep 9 '16 at 4:36
  • @William Also think about the backpack itself. Why would he even wear a backpack if there weren't any significant reason to do so? – OddDeer Sep 9 '16 at 6:14
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The climber was using a Powr-Grip Suction Cup Lifters.

Powr-Grip Suction Cup Lifters

The full list of equipment can be found here.

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  • Out of curiosity if it is only for 125 lb. how does the physics or math work such that four can carry him. I me you would guess four would be enough but I wouldn't feel particular safe about it. – William Sep 9 '16 at 1:18
  • These make more sense to me zoro.com/powr-grip-suction-cup-lifter-10-in-horiz-handle-n6450/… because they are weighted for 175 a piece – William Sep 9 '16 at 1:19
  • Well. 4 of them don't compound in a full 500lb load but instead distribute (if proper used) his weight by 4. let's say he's 150lb heavy, each suction cup would only hold (again if proper used) around 37.5lb. He's a climber and I believe he understands or had people that understand that kind of physics to help him plan. – Desorder Sep 9 '16 at 1:27
  • It would be better to say how much of the 3 suction cups each one holds considering one is off when he moves. – William Sep 9 '16 at 1:28
  • may as well. You can note he takes quite a long time to move from one to another. I believe it's because he must be sure the other three cups are secure. I opened a lot of climbing routes back home and we had to use [fifi hooks] (blackdiamondequipment.com/en/big-wall-climbing/…). I always had a dozen hooked on various places and in many occasions, I only had enough time to drill the hole and secure the bolt by the time 8 or 9 of them had popped off. – Desorder Sep 9 '16 at 1:34

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