Next Previous

Stop Bobbins

Rope PathBobbins are mechanical descenders where the rope path follows the S-shaped path shown in the figure. The braking surface typically consists of two non-rotating bollards fixed to a side plate, with a second pivoting side plate provided to keep the rope from jumping off the other end of the bollards. A third (usually smaller) bollard may be provided. The seat maillon usually attaches to holes in extensions of the two side plates; these holes are aligned when the side plates pivot to the closed position.

Some bobbins have a mechanism that applies additional braking force if the rappeller releases or squeezes (depending on the design) a handle on the bobbin. Plain bobbins have no such mechanism. I divide the bobbins with such mechanisms into these groups:

1. Stop Bobbins, the subject of this page, where the main upper bollard is fixed to the rear plate, the main lower bollard is fixed to a rotating lever that moves in one direction to stop and the other for descending,

2. Double-Stop Bobbins, where the main upper bollard is fixed to the rear plate, the main lower bollard is fixed to a rotating lever that moves in either direction to stop and to the center for descending, and

3. Near Bobbins, where the two main bollards are attached to a rotating lever. These may have a double stop feature, and attachments to provide for a double stop are available for most of those that do not.

I find that the Petzl Stop is more likely to stop me than the Diablo, Dressler or Kong - in fact, on a clean rope, I can often rappel with the latter ones locked off. The Tracson is a complex device that I've included here rather than create a new category. It combines a Jumar-type cam with a bobbin into a single rappel and ascent device. I would not like to rely on the stop feature because of the sharp cam teeth. My first Tracson immediately bent both times that I tested it, and I haven't used it since. Its an interesting idea, but I think it needs more work to be practical.

Image

ID Device Description Acquired Weight Height Width Thickness Std. volume
Asol 2484 Asol Bent frame, solid spools, cut lower spool, top brake linked to handle, plastic gate  Liao Kangin, 2018 375 227 59 31 404
Венто (Vento) 2468 Венто (Vento) Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, stamped gate Alexander Starkov, 2017 317 211 56 30 354
BO.VE Diablo 431 BO.VE Diablo Bent frame, solid spools, round brake, no-stop lock, stamped gate Repetto Sport, 1982 327 223 63 32 450
Camnal Down 2528 Camnal Down Bent frame, solid spools, cut lower spool, dual top brake linked to handle, stamped gate  Duoqiao Technology (sporting_mall), 2019 352 232 63 31 452
Mikhail Dyakin 451 Cascade
(Каскад)
Bent frame, solid upper spool (cut), solid lower spool /w round stop, aux. rod, wire gate Vladimir Kisseljov and Ilia Alexandrov, 1994 246 222 55 32 391
Chinese, Version A 2543 Chinese, Version A Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, plastic gate Strade FarEast Ltd. (3cdeal_sfc), 2021 342 218 61 33 431
Chinese, Version B 3068 Chinese, Version B Bent frame, solid spools, cut lower spool, dual top brake linked to handle, stamped gate  hea1985, 2021 349 233 63 31 456
Climb Tech 1383
2435
Climb Tech Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, plastic gate
  • Climb Tech, 2012
  • Bob Thrun Collection, 2017
342 219 60 33 433
Dressler DAD 432 Dressler DAD Bent frame, irregular cast spools, open top Repetto Sport, 1982 247 179 51 32 292
Epic Peak 2464 Epic Peak Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, plastic gate Epic Peak, 2017 343 219 64 32 446
Fiolent (Фиолент) 3053 Fiolent (Фиолент) Bent frame, solid upper (cut) & lower (/w steel brake) spools, stamped gate Denis Pivot, 2021 278 244 69 29 485
Great Makings 1418 Good Makings Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, plastic gate Yungfeng Xiao, 2014 342 217 64 32 445
Ito-Rocky 2530 Ito-Rocky Bent frame, solid spools, cut lower spool, dual top brake linked to handle, stamped gate  Andy Garcia, 2019 372 224 59 30 403
Kong, Version A 1434 Kong, Version A Bent frame, solid spools, cut lower spool, top brake linked to handle, stamped gate  Clear Out Our Stuff, 2015 398 232 55 27 342
Kong, Version B 522 Kong, Version B Bent frame, solid spools, cut lower spool, top brake linked to handle, stamped gate Inner Mountain Outfitters, 1996 397 230 65 32 478
Kong, Version B (modified) 528 Kong, Version B (modified) Bent frame, solid spools, cut lower spool reversed, top brake linked to handle, stamped gate Inner Mountain Outfitters, 1997 397 230 65 32 478
Kong Indy 903
2436
Kong Indy Bent frame, solid spools, cut lower spool reversed, top brake linked to handle, stamped gate
  • Inner Mountain Outfitters, 2001
  • Bob Thrun Collection, 2017
476 230 64 31 456
Kong Indy EVO NFPA 1395 Kong Indy EVO NFPA Bent frame, cast ribbed spools, top brake linked to handle  On Rope 1, 2013 455 216 62 33 444
Kong Indy EVO NFPA 3069 Kong Indy Evo Plus Bent frame, cast ribbed spools, top brake linked to folding handle  TradeInn / Amazon.com, 2021 491 201 57 44 503
Kong Pirata 2553 Kong Pirata Stamped frame, cast Al spools,spring-loaded plastic handle, stamped gate Karst Sports, 2020 421 177 61 40 436
Kong-Bonaiti, Version A 3024 Kong-Bonaiti, Version A Bent frame pivots at top bar, solid spools, cut lower spool, top brake linked to handle, stamped gate  Avi Basri, 2021 399 239 60 31 446
Kong-Bonaiti, Version B 433 Kong-Bonaiti, Version B Bent frame pivots at top bar, solid spools, cut lower spool, top brake linked to handle, stamped gate Speleoshoppe, 1982 400 239 60 30 430
Krok Anti-Panic Aluminum, Version A 1342 Krok Anti-Panic Aluminum, Version A Bent frame, solid spools, high handle, push-button twist catch, no gate, painted Gear4Rocks, 2012 345 195 120 33 780
Krok Anti-Panic Aluminum, Version B 1361 Krok Anti-Panic Aluminum, Version B Bent frame, solid spools, high handle, push-button twist catch, no gate, painted Krok (Alex Dniprovsky & Alex Kostromitinov), 2012 408 208 118 33 816
Krok Anti-Panic Steel 1343 Krok Anti-Panic Steel Bent frame, solid spools, high handle Gear4Rocks, 2012 528 194 121 29 689
Krok Desant 1344 Krok Desant Bent frame, solid spools Gear4Rocks, 2012 373 184 84 26 403
Krok Desant Classic 1392 Krok Desant Classic Bent frame, solid spools (cut), aux. rod, wire gate Gear4Rocks, 2013 410 196 118 29 666
Krok Grisha, Version A 1345 Krok Grisha, Version A Stamped frame, milled cam on spring-loaded handle, single rope Gear4Rocks, 2012 399 156 84 31 402
Krok Grisha, Version B 1357
1362
Krok Grisha, Version B Stamped frame, milled cam on spring-loaded handle, single rope
  • Gear4Rocks, 2012
  • Krok (Alex Dniprovsky & Alex Kostromitinov), 2012
402 135 109 36 526
Krok One-armed Amigo 3016 Krok One-armed Amigo
6061.36
(Однорукий Амиго)
Stamped frame, milled bollards, rotating arm with rope channel, brake handle on arm Krok, 2021 471 161 108 27 474
Krok Stopor-Desant 1352 Krok Stopor-Desant Bent frame, solid spools, high handle Gear4Rocks, 2012 476 150 121 31 560
NewDoar 3187 NewDoar Bent frame, solid spools, cut lower spool, dual top brake linked to handle, stamped gate  Meituo / Amazon.com, 2022 375 231 58 32 427
NTR 1454 NTR Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, plastic gate Linko Chen, 2015 343 218 62 32 436
NTR 2595 Orion-Alp (Орион-Альп) Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, stamped gate Artyom Babin (Артём Бабин), 2020 352 216 59 32 408
Petzl Stop, Version A 435 Petzl Stop, Version A Bent frame, solid upper (cut) & lower (/w steel brake) spools, stamped gate Repetto Sport, 1982 289 225 61 33 453
Petzl Stop, Version B 436 Petzl Stop, Version B Bent frame, solid upper (cut) & lower (/w steel brake) spools, stamped gate Caves Unlimited, 1984 302 226 64 32 463
Petzl Stop, Version C 1324 Petzl Stop, Version C Bent frame, solid upper (cut) & lower (/w steel brake) spools, stamped gate Geoffrey Storey, 2012 297 231 63 32 463
Petzl Stop, Version D 2420 Petzl Stop, Version D Bent frame, solid upper (cut) & lower (/w steel brake) spools, stamped gate Bob Thrun Collection, 2017 309 229 62 32 458
Petzl Stop, Version E 437 Petzl Stop, Version E Stamped frame, solid upper spool (cut), cast lower spool /w stop, aux. rod, stamped gate John E. Weinel, Inc., ~1987 327 240 63 32 484
Petzl Stop, Version F 2586
3141
Petzl Stop, Version F Stamped frame, solid upper spool (cut), cast lower spool /w stop, aux. rod, stamped gate
  • Seth Parks, 2021
  • Gregory Jones, 2022
325 225 61 32 443
Petzl Stop, Version G 438
3020
Petzl Stop, Version G Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, stamped gate
  • Bob & Bob, 1991
  • Avi Basri, 2021
322 225 62 32 446
Petzl Stop, Version H 3160 Petzl Stop, Version H Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, stamped gate Wade S Walker, 2022 327 223 62 32 445
Petzl Stop, Version I 541 Petzl Stop, Version I Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, plastic gate TSA, 1997 325 223 68 32 485
Petzl Stop, Version J 3026 Petzl Stop, Version J Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, plastic gate Joe Nicely, 2021 323 223 68 32 484
Petzl Stop, Version K 2526 Petzl Stop, Version K Stamped frame, cast SS spools, aux. rod, spring-loaded plastic handle, plastic gate Petzl America, 2019 348 200 70 38 533
Rock Empire 1368 Rock Empire Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, plastic gate Climbing Terekpl, 2012 341 220 59 32 418
Russian, Version A 518 Russian, Version A Bent frame, solid upper spool (cut), solid lower, stamped gate Theresa Williams/Maury Benamy, 1995 255 220 62 27 368
Russian, Version B 973 Russian, Version B Bent frame, solid upper spool (cut), solid lower, aux. rod, stamped gate Ural Sport, 2004 286 208 74 30 459
S.A.R.L. Voynett Tracson 452 S.A.R.L. Voynett Tracson, Version A Combination bobbin and ascender Repetto Sport, 1982 580 192 107 50 1027
S.A.R.L. Voynett Tracson 2409 S.A.R.L. Voynett Tracson, Version B Combination bobbin and ascender Bob Thrun Collection, 2017 589 192 107 50 1027
SOB 3062 SOB Bent frame, solid spools, cut lower spool, dual top brake linked to handle, stamped gate  Xinqiang Yu 新强 余 (tdcq888), 2021 349 235 63 31 460
SunniMix 3044 SunniMix Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, plastic gate Strade FarEast Limited (sportsloving), 2021 339 219 66 33 469
SUT 2460 SUT Bent frame, solid spools, cut lower spool, dual top brake linked to handle, stamped gate  Kangjin Liao, 2017 474 232 66 31 479
TAZ Lov2 2503 TAZ Lov2 Al plates, ss anvil, ss cam on plastic handle, plastic cleat Omni Pro Gear, 2018 364 154 84 42 534
TAZ Lov3 2597 TAZ Lov3 Al plates, ss anvil, ss cam on plastic handle, plastic cleat Omni Pro Gear, 2021 387 152 84 44 563
Tupa 3019
3037
Tupa Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, plastic gate
  • Runwu Silent (Shenzhen) Technology Co., Ltd. (润物无声(深圳)科技有限公司), 2021
  • Strade FarEast Ltd., 2021
341 218 61 33 436
Vento (Венто), Version A 1468 Vento (Венто), Version A Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, plastic gate Carl Janysek, 2015 340 218 64 33 452
Vento (Венто), Version B 2539 Vento (Венто), Version B Bent frame, solid spools, cut lower spool, dual top brake linked to handle, stamped gate  Artyom Babin (Артём Бабин), 2019 463 232 62 32 456
Vertical (Вертикаль), Version A 3115 Vertical (Вертикаль), Version A Bent frame, solid upper (cut) & lower (/w steel brake) spools, stamped gate, no gate spring Artyom Babin (Артём Бабин), 2021 391 210 67 28 390
Vertical (Вертикаль), Version B 2594 Vertical (Вертикаль), Version B Bent frame, cast upper & lower  spools, aux. rod, stamped gate Artyom Babin (Артём Бабин), 2020 348 210 74 29 446
Vertical (Вертикаль), Version C 3167 Vertical (Вертикаль), Version C Bent frame, cast upper & lower  spools, aux. rod, stamped gate Vertical (Вертикаль), 2022 343 221 54 33 399
Xinda King Kong 3033 Xinda King Kong Stamped frame, solid upper spool (cut), cast ribbed lower spool /w stop, aux. rod, wire gate Kangjin Liao (e4store), 2021 316 236 63 32 466
Z&W 2531 Z&W Bent frame, solid spools, cut lower spool, dual top brake linked to handle, stamped gate  Duoqiao Technology (sporting_mall), 2019 376 228 58 30 399

Double-Stop Bobbins Near Bobbins Bobbins Bobbin Weight Distribution