Handled Eccentric Cam Ascenders
Milled-Frame

This section includes mechanical ascenders consisting of a shell or frame and an eccentric cam assembly attached to the shell/frame at a single pivot point. The shell/frame is open on one side to allow admittance of the standing rope. The shell/frame below the cam is enlarged to provide a handle. No sling attachment points are provided on the cam.

These ascenders are generally larger and heavier than the handleless eccentric cam ascenders; conversely, they are easier to manipulate, particularly with gloved hands. I don't normally wear gloves while ascending (except in cold conditions), but many people prefer to do so.

I split the Handled Eccentric Cam Ascenders into these four groups:

• Cast Frame
• Milled Frame
• Stamped Frame
• Double-rope

Most milled frame ascenders made by milling an aluminum extrusion. This process can yield extremely rugged ascenders, and I prefer them in harsh environments. The extrusion process limits the possible shapes for the handle, and so these ascenders are often less comfortable than their cast frame cousins. Some extruded frame ascenders are quite heavy, but others, especially the Kong Futura, are quite light.

[ More about Eccentric Cam Ascenders | More about Ascender Handles | Eccentric Cam Classification ]

Image	ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓	Channel Diameter ↓	Cam Angle ↓	Tooth Pattern ↓
	2221	CMI 5000, Version A	RH, extruded frame, round top & 2 round bottom holes, open-web cam /w straight teeth, safety lever above cam	Bob Thrun Collection, 2017	229	184	76	27	381	14.6	29	(2)(5.4)^4(3.4)^2(3.2)^2
	2225	CMI 5000, Version B	LH & RH, extruded frame, round top & 2 round bottom holes, open-web cam /w straight teeth, safety lever above cam	Bob Thrun Collection, 2017	228	184	76	27	381	14.6	29	(2)(5.4)^4(3.4)^2(3.2)^2
	2222	CMI 5000, Version C	LH, extruded frame, round top & 2 round bottom holes, open-web cam /w straight teeth, safety lever above cam	Bob Thrun Collection, 2017	230	185	76	31	431	14.6	29	(2)(5.4)^4(3.4)^2(3.2)^2
	2299	CMI 5000, Version D	LH, extruded frame, round top & 2 round bottom holes, open-web cam /w straight teeth, safety lever above cam	Bob Thrun Collection, 2017	230	184	76	31	433	14.6	29	(2)(5.4)^4(3.4)^2(3.2)^2
	27	CMI 5000, Version E	LH & RH, extruded frame, round top & 2 round bottom holes, open-web cam /w straight teeth, safety lever above cam	Speleoshoppe, 1979	226	183	76	31	430	14.3	28	(2)(5.4)^4(3.4)^2(3.2)^2
	3418 3433	CMI 5000, Version F	LH & RH, extruded frame, round top & 2 round bottom holes, open-web cam /w straight teeth, safety lever above cam	Robert Quast, 2021 T. Renerce, 2021	230	184	76	31	430	14.6	29	(2)(5.4)^4(3.4)^2(3.2)^2
	2220	CMI 5000, Version G (a.k.a. 5001)	RH, extruded frame, round top & 2 round bottom holes, open-web cam /w straight teeth, safety lever above cam	Bob Thrun Collection, 2017	227	184	76	27	381	14.6	29	(2)(5.4)^4(3.4)^2(3.2)^2
	292 2219 3541	CMI 5000, Version H (a.k.a. 5001)	LH & RH, extruded frame, round top & 2 round bottom holes, open-web cam /w straight teeth, safety lever above cam	Dean Berkbigler, 2009 Bob Thrun Collection, 2017 M&M (halfstepnutchell), 2022	210	184	76	27	378	14.6	29	(2)(5.4)^4(3.4)^2(3.2)^2
	2385	CMI 5002, Version A	LH & RH, extruded frame, round top & 2 round bottom holes, open-web cam /w straight teeth, safety lever above cam	Michael Schultz, 2019	219	184	77	28	387	14.3	28	(3)(5.4)^4(3.4)(3.2)^3
	28 170 1545 2224	CMI 5002, Version B	LH & RH, extruded frame, round top & 2 round bottom holes, open-web cam /w straight teeth, safety lever above cam	Speleoshoppe, 1989 Barry Kooda, 2004 Daniel Abend, 2011 (given to Артём Бабин) Bob Thrun Collection, 2017	220	184	76	28	388	14.3	28	(3)(5.4)^4(3.4)(3.2)^3
	29	CMI 5003, Version A	LH & RH, extruded frame, round top & 2 round bottom holes, braced cam /w straight teeth, safety lever above cam	Bob & Bob, 1987	236	183	77	27	383	17.4	29	(5.4)^2(3.4)^3(3.2)
	3597	CMI 5003, Version B	LH & RH, extruded frame, round top & 2  round bottom holes, braced cam /w straight teeth, safety lever above cam	Jason Macht, 2023	249	185	78	29	414	17.5	29	(5.4)^2(3.4)^3(3.2)
	30 2223 3488	CMI 5004	LH & RH, extruded frame, round top & 2 round bottom holes, braced cam /w straight teeth, safety lever above cam	Bob & Bob, 1989 Bob Thrun Collection, 2017 Chris White, 2021	245	183	78	29	404	17.5	29	(5.4)^2(3.4)^3(3.2)
	3454	CMI Lanyard Ascender	LH, extruded frame, bottom slot /w round hole, hybrid cam /w straight teeth, lower teeth removed, plastic safety in frame	Jonathan M. White, 2021	260	170	78	29	378	17.5	25	(4.3)^5
	31 2229	CMI Large UltrAscender, Version A	LH & RH, plastic grip, extruded frame, round top & 2 round bottom holes, hybrid cam /w straight teeth, plastic safety in frame	John E. Weinel, Inc., 1989 Bob Thrun Collection, 2017	267	186	78	29	415	17.5	25	(4.3)^5(4)
	114	CMI Large UltrAscender, Version B	LH & RH, plastic grip, extruded frame, round top & 2 round bottom holes, hybrid cam /w straight teeth, plastic safety in frame	Inner Mountain Outfitters, 1995	267	186	78	29	415	17.5	25	(4.3)^5(4)
	216 2230	CMI Large UltrAscender, Version C	LH & RH, plastic grip, extruded frame, round top & 2 round bottom holes, hybrid cam /w straight teeth, plastic safety in frame	Tetyana Zurigat, 2007 Bob Thrun Collection, 2017	263	187	78	28	414	17.5	25	(4.3)^5(4)
	246	CMI Large UltrAscender, Version D	LH & RH, plastic grip, extruded frame, round top & 2 round bottom holes, hybrid cam /w straight teeth, plastic safety in frame	Inner Mountain Outfitters, 2008	271	186	77	27	384	17.5	25	(4.3)^5(4)
	115/116	CMI Large UltrAscender, Version D (Modified)	LH & RH, modified grip, extruded frame, round top & 2 round bottom holes, hybrid cam /w straight teeth, metal safety in frame	Inner Mountain Outfitters, 2008 Modified by Gary Storrick, 2008	263	186	78	29	415	17.5	25	(4.3)^5(4)
	3595	CMI Large UltrAscender, Version E	LH & RH, plastic grip, extruded frame, round top & 2  round bottom holes, hybrid cam /w straight teeth, milled safety in frame	CMI, 2023	269	186	77	27	384	17.5	25	(4.3)^5(4)
	32	CMI Small UltrAscender, Version A	LH & RH, extruded frame, triangular top hole, hybrid cam /w straight teeth, plastic safety in frame	John E. Weinel, Inc., 1989	187	129	78	29	288	17.5	25	(4.3)^5(4)
	33 3460	CMI Small UltrAscender, Version B	LH & RH, extruded frame, triangular top hole, hybrid cam /w straight teeth, plastic safety in frame	Inner Mountain Outfitters, 1991 On Rope 1, 2021	187	129	78	29	288	17.5	25	(4.3)^5(4)
	1518 2228	CMI Small UltrAscender, Version C	LH & RH, extruded frame, triangular top hole, hybrid cam /w straight teeth, plastic safety in frame	On Rope 1 Bob Thrun Collection, 2017	183	130	77	28	285	17.5	25	(4.3)^5(4)
	229 3538	CMI Small UltrAscender, Version D	LH & RH, extruded frame, triangular top hole, hybrid cam /w straight teeth, metal safety in frame	On Rope 1, 2007 Jay Kennedy, 2022	189	130	77	28	283	17.5	25	(4.3)^5(4)
	34/35	CMI Small UltrAscender, Version D (Modified)	LH & RH, extruded frame, triangular top hole, hybrid cam /w straight teeth, modified safety in frame	Inner Mountain Outfitters, 2008 Modified by Gary Storrick, 2008	190	129	78	29	288	17.5	25	(4.3)^5(4)
	3596	CMI Small UltrAscender, Version E	LH & RH, extruded frame, triangular top hole, hybrid cam /w straight teeth, milled safety in frame	CMI, 2023	188	130	77	28	283	17.5	25	(4.3)^5(4)
	3470	GripTech	RH, extruded frame, round lower hole, side hand grip, plate cam /w straight milled teeth, no safety	Pat Clark, 2021	529	178	98	87	1506	17.2	21	2^8
	145 2211	International Safety Components, Version A	LH & RH, extruded frame, plastic & metal grip, 1 oval top & 1 round bottom holes, braced cam /w straight teeth, knob safety below cam	Mountain Tools, 1999 Bob Thrun Collection, 2017	358	216	85	37	679	14	27	(4.3)^6(4)
	287	International Safety Components, Version B	LH, extruded frame, plastic & metal grip, 1 oval top & 2 round bottom holes, braced cam /w straight teeth, knob safety below cam	Michael McGuinn, 2009	369	218	82	32	566	14.7	24	(4.3)^6(4)
	2024 2209	International Safety Components RP240	LH & RH, extruded frame, plastic & metal grip, 1 oval top & 2 round bottom holes, braced cam /w straight teeth, knob safety below cam, safety push-pin through cam channel	Aarond Reagan, 2015 Bob Thrun Collection, 2017	365	217	84	35	643	14.7	24	(4.3)^6(4)
	1967 2177	Jumar, Swiss Rescue	LH, extruded frame, triangular top and round bottom holes, open-web cam /w straight teeth, tab safety below cam	Bob Thrun, 2014 Bob Thrun Collection, 2017	249	182	98	30	529	16.0	29	(4.H)^2(3.H)^2(3.2.2)
	2972/2973	Kailas Vector	LH & RH, extruded frame, Oval top and sub-quadrilateral bottom holes, drooped cam /w cutouts & straight teeth, plastic safety below cam	Amazon.com, 2020	168	189	88	28	465	15.1	35	(3.4)(1S1.2S2)^2(1S1.1.2)
	3485	Kailas Vector-L	LH & RH, extruded frame, oval top and 2 sub-quadrilateral bottom holes, drooped cam /w cutouts & straight teeth, plastic safety below cam	Amazon.com, 2021	175	193	99	30	577	15.0	35	(3.4)(1S1.2S2)^2(1S1.2.3)
	1552 2103	Kong Futura (Large Grip)	LH & RH, extruded frame, plastic grip, round bottom hole, open cam /w sloping teeth, tab safety /w pull cord below cam	On Rope 1, 2011 Bob Thrun Collection, 2017	131	139	85	24	281	14.0	32	(4)(5.2H2)^2(4.2)
	299	Kong Futura (Small Grip)	LH & RH, extruded frame, plastic grip, round bottom hole, open cam /w sloping teeth, tab safety /w pull cord below cam	On Rope 1, 2009	130	139	85	24	281	14.0	32	(4)(5.2H2)^2(4.2)
	3421	Krasnoyarsk Aircraft Repair Plant (Красноярский авиаремонтный завод)	RH, milled Al frame, round top and vertical round bottom hole, open-web cam /w straight teeth, metal safety in frame	Artyom Babin (Артём Бабин), 2021	269	180	72	32	413	14.7	24	(4.3)^6(4)
	157 2210	PMI Puma	LH & RH, extruded frame, plastic & metal grip, 1 oval top & 2 round bottom holes, braced cam /w straight teeth, knob safety below cam	On Rope 1, 2001 Bob Thrun Collection, 2017	367	216	85	37	679	14.7	24	(4.3)^6(4)
	2021/2036	Proverti CD 211 & CD 212	LH & RH, milled frame, pear top & 2 round bottom holes, asymmetrical open-web cam /w sloping teeth, tab safety below cam	Ondřej Belica, 2015	292	207	93	30	573	16.1	31	(3)(4.H)^2(3.H)^2(3.2.2)
	51 2214 2341	Single Rope Technique Equipment Caver, 8-11 mm.	LH & RH, extruded frame, 2 round top & 2 round bottom holes, semi-web cam /w straight teeth, frame-mounted safety	KHS Sales, 1988 Bob Thrun Collection, 2017 Bill Liebman, 2017	251	185	76	25	358	13.9	26	(4.5)^3(4.3)^3
	52 53 2216	Single Rope Technique Equipment Caver, 8-16 mm.	LH & RH, extruded frame, 2 round top & 2 round bottom holes, semi-web cam /w straight teeth, frame-mounted safety	J. E. Weinel, Inc., 1989 Single Rope Technique Equipments, 1989 Bob Thrun Collection, 2017	340	196	80	31	487	17.6	28	(4.5)^3(4.3)^2(4)
	50 2215	Single Rope Technique Equipment Climber	LH & RH, extruded frame, 2 round top & 2 round bottom holes, semi-web cam /w straight teeth, frame-mounted safety	Inner Mountain Outfitters, 1988 Bob Thrun Collection, 2017	215	135	76	25	261	13.9	26	(4.5)^3(4.3)^3
	54	Single Rope Technique Equipment A1 Explorer, Version A	LH & RH, extruded frame, plastic grip, 2 round top & 2 round bottom holes, semi-web cam /w straight teeth, pin safety below cam	Inner Mountain Outfitters, 1994	314	206	86	31	549	14.3	25	(4.3)^5(4)(F)
	2213	Single Rope Technique Equipment A1 Explorer, Version B	RH, extruded frame, plastic grip, 2 round top & 2 round bottom holes, semi-web cam /w straight teeth, pin safety below cam	Bob Thrun Collection, 2017	315	210	90	34	638	14.1	25	(4.3)^5(4)(F)
	3483	Single Rope Technique Equipment A1 Explorer, Version C	LH, extruded frame, plastic grip, 2 round top & 2 round bottom holes, semi-web cam /w straight teeth, pin safety below cam	Bob Thrun Collection, 2017	311	210	90	34	644	14.4	29	(3.4)^2(5.4)^2(3.4)^2(F)
	147	Single Rope Technique Equipment A1 EXP 6 Large Explorer	LH & RH, 16 mm. rope, extruded frame, 2 top & 2 round bottom holes (different sizes), semi-web cam /w straight teeth, pin safety below cam	Single Rope Technique Equipment, 2000	352	209	88	32	576	17.9	29	(3.4)^2(5.4)^2(3.4)^2(F)
	2217 2218	Single Rope Technique Equipment / Rollgliss / DBI Sala A1 EXP 6L & 6R	LH & RH, 16 mm. rope, extruded frame, 2 top & 2 round bottom holes (different sizes), semi-web cam /w straight teeth, pin safety below cam	Bob Thrun Collection, 2017 Bob Thrun Collection, 2017	386	212	88	31	584	18.1	28	(3.4)^2(5.4)^2(3.4)^2(F)
	1991	Trango	RH, plastic grip, extruded frame, round top & 2 round bottom holes, semi-open web cam /w straight teeth, plastic safety in frame	Jesse Albanese, 2015	246	187	72	23	309	15.5	22	(3)(2S2.1S1)^4(1S1)(3)
	3590	Troll	RH, extruded frame, plastic & metal grip, 1 oval top & 1 round bottom holes, braced cam /w straight teeth, knob safety below cam	Equipment Outdoors, 2023	360	215	81	35	607	14.7	24	(4.3)^6(4)
	3619	Vertical Big Wall (Большая стена)	RH, extruded frame ,rubber grip, 1 oval top & 2 round bottom holes, braced cam /w straight teeth, knob safety below cam	Artyom Babin (Артём Бабин), 2023	349	221	89	33	653	14.4	26	(3.4)^7
	291 2208	Yates Big Wall	RH, stamped frame, plastic grip, oval + round top & round bottom holes, braced cam /w straight teeth, knob safety below cam	Acme Climbing, 2009 Bob Thrun Collection, 2017	370	217	84	32	588	14.6	24	(4.3)^6(4)

HandleECMilled.php/20240925
© Copyright 2024, Gary D. Storrick, All Rights Reserved.