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| Black Diamond Air Traffic Controller |
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 | Average Rating: 4 out of 5 No. of Reviews: 5 RRP: £13.50 Year: 2004 Description: Drop forged from aircraft quality 7075-T6 aluminium alloy.
* Weight: 50gr.
* Strength: Pull tested to to 24kn.
* For use with 9 - 11mm diameter rope. (For smaller diameter, use two karabiners for extra friction.)
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 |  | | Posted: 17/04/03 | | 'POSSIBLY TOO SLICK FOR LEAD BELAYING' |  | Strengths: For top ropes, and indoors, it's really slick, and smooth, and quick. The rope never jams, and hardly ever kinks. |  | Weaknesses: When belaying a lead using two 8.5mm ropes, I could cope, but wouldn't be as confident to hold a fall, as with a Bug, or Variable Controller. |  | Overall: If you belay good climbers, who will get up really quickly, then this is perfect, but if they're a little more worried, and a bit slower, then there are other devices which will allow better holding power. |
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| | | | Performance | | 60% | | Reliability | | 60% | | Value | | 60% |
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 |  | | Posted: 04/06/05 | | 'IDEAL FOR USE WITH THICKER SINGLE ROPES' |  | Strengths: Simple, lightweight, durable belay device, ideal for use with a single rope, and a lighter climber. My belay device of choice for sport climbing on a 10.2mm rope. I have not yet had one of these jam on me. I personally don't find it too fast for abseiling, but I do only weigh 45kg! |  | Weaknesses: On 8.5s its VERY slick, I would not like to belay a heavy leader with one of these on skinny halves, or for that matter a slender single, (a bug, or ATC-XP would be more suited to this).
HB sherriff is cheaper. |  | Overall: This was the first belay device I bought, and for indoors, and sport climbing it is fine. I have replaced it with an XP for trad, as I am weak and feeble, and often belay people twice my weight on halves, but I still use this occaisonally. |
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| | | | Performance | | 60% | | Reliability | | 100% | | Value | | 80% |
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