Cast-Frame Handled Eccentric Cam Ascenders

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 ahile ascending (except in cold conditions), but many people prefer to do so.

Cast-frame ascenders are subject to cracking if dropped; however, actual failures are rare. The reports of gray Jumar front-strap failures that I've seen were of a different nature: unknowledgable people tying in to a portion of the ascender that was never designed for that purpose. Casting can produce ergonimically superior designs, and many of my caver friends feel that the gray Jumars were the most comfortable ascenders ever made.

In the ID column and chart, I used a red background for cast-frame ascenders.

ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓	Channel Diameter ↓	Cam Angle ↓	Tooth Pattern ↓
3448	Centrolit (Центролит), Version A	RH, chill cast Al frame, Triangular top hole, semi-open web cam /w straight teeth, metal safety in frame	Artyom Babin (Артём Бабин), 2025	224	72	79	38	212	14.5	24	(4)^12
3448	Centrolit (Центролит), Version B	RH, chill cast Al frame, Triangular top hole, semi-open web cam /w straight teeth, metal safety in frame	Vitaly Tomchyk, 2021	213	171	79	35	473	16.7	23	(2)(4)^12
3422	Centrolit (Центролит), Version C	LH, cast Al frame, triangular top & square bottom holes, semi-open web cam /w straight teeth, metal safety in frame	Artyom Babin (Артём Бабин), 2021	183	159	72	33	372	14.9	22	(2.1)^5(2)
3642	Centrolit (Центролит), Version D	LH, cast Al frame, triangular top & square bottom holes, semi-open web cam /w straight teeth, metal safety in frame	Artyom Babin (Артём Бабин), 2024	177	159	72	32	366	15.0	22	(2.1)^5(2)
1551	Jumar, Version A	LH & RH, cast frame, triangular top & square bottom holes, open-web cam /w straight teeth, metal safety in frame	Steve Brandlein, 2011	190	162	76	37	459	14.1	27	(4.5)^6(4.3)^2(4)
3581 3649	Jumar, Version B	LH & RH, cast frame, triangular top & square bottom holes, open-web cam /w straight teeth, metal safety in frame	theoldmanspicks, 2023 Gary Grant, 2024	193	164	77	37	459	13.9	27	(4.5)^6(4.3)^2(4)
1576 2172 3598	Jumar, Version C	LH & RH, cast frame, triangular top & square bottom holes, open-web cam /w straight teeth, metal safety in frame	Don Harper, 2012 Bob Thrun Collection, 2017 Michael Oatney, 2023	209	162	75	36	453	13.0	27	(4.5)^6(4.3)^2(4)
136 3580 3599	Jumar, Version D	LH & RH, cast frame, triangular top & square bottom holes, open-web cam /w straight teeth, metal safety in frame	NSS Auction, 1999 Graeme Smith, 2023 Michael Oatney, 2023	207	161	76	37	453	14.1	27	(4.5)^5(4.3)^4
2351 2352	Jumar, Version E	LH, cast frame, triangular top & square bottom holes, open-web cam /w straight teeth, metal safety in frame	Austin Habitat for Humanity, 2017 James Haerr, 2017	208	162	76	38	461	14.1	27	(4.5)^5(4.3)^4
236 1506 1549 1550 2001	Jumar, Version F	LH & RH, cast frame, triangular top & square bottom holes, open-web cam /w straight teeth, metal safety in frame	Karla Green, 2008 Simon Cox, 2009 Charles Wilkes, 2010 Chris Vandiver, 2011 (Given to Артём Бабин) Greg Estes, 2015	210	162	76	38	467	14.1	27	(4.5)^5(4.3)^4
36 37 272 3509	Jumar, Version G	LH & RH, cast frame, triangular top & square bottom holes, open-web cam /w straight teeth, metal safety in frame	Roy Jameson, 1980 John Yost, 1993 Karl G. Wilcox, 2009 cptnamerica2003, 2022	211	161	76	38	467	14.1	27	(4.5)^5(4.3)^4
38 293 1547 1911 2171 2173 2174 3510	Jumar, Version H	LH & RH, cast frame, triangular top & square bottom holes, open-web cam /w straight teeth, plastic safety in frame	Speleoshoppe, 1976 Dean Berkbigler, 2009 Alexander Medrano, 2011 Stuart Polack, 2012 Bob Thrun Collection, 2017 Bob Thrun Collection, 2017 Bob Thrun Collection, 2017 cptnamerica2003, 2022	206	157	74	36	418	14	27	(4.5)^5(4.3)^4
1535	Jumar, Version I	LH & RH, cast frame, triangular top & square bottom holes, open-web cam /w straight teeth, plastic safety in frame	Craig B. Clark, 2010	203	160	74	36	425	14	27	(4.5)^5(4.3)^4
118	Jumar, Version J	RH, cast frame, triangular top & round bottom holes, retention clip, open-web cam /w straight teeth, plastic safety in frame	Theresa Williams/Maury Benamy, 1995	213	159	76	32	387	14	27	(4.5)^5(4.3)^4
39 297 2067	Jumar 79, Version A	LH & RH, cast frame, triangular top & round bottom holes, semi-web cam /w straight teeth, plastic safety /w beak in frame	Speleoshoppe, 1979 John Friedman, 2009 Bob Thrun Collection, 2017	263	179	77	36	498	14.9	27	(4.5)^3(4.3)^3
40 3459	Jumar 79, Version B	LH & RH, cast frame, triangular top & round bottom holes, semi-web cam /w straight teeth, plastic safety in frame	Speleoshoppe, 1979 On Rope 1, 2021	273	179	78	37	507	14.9	27	(4.5)^3(4.3)^3
41	Jumar 79, Version C	RH, cast frame, triangular top & round bottom holes, wear pins, semi-web cam /w straight teeth, plastic safety in frame	Walter Marti, 1982	271	179	78	37	507	14.9	27	(4.5)^3(4.3)^3
265 270 285 1532 1905	Jumar 79, Version D	LH & RH, cast frame, triangular top & square bottom holes, semi-web cam /w straight teeth, plastic safety in frame	Charles Denning, 2009 J. Matzke, 2009 Henderson L. Holman IV, 2009 Jeff DeFreest, 2010	272	179	78	37	507	14.7	27	(4.5)^3(4.3)^2(4)
42 1908	Jumar 79, Version E	LH & RH, cast frame, triangular top & round bottom holes, wear pins, semi-web cam /w straight teeth, plastic safety in frame	Walter Marti, 1989 Caleb Laurence (Laptop Specialties), 2012	274	179	78	37	507	14.7	27	(4.5)^3(4.3)^2(4)
271 2175 2278	Jumar, Fritschi	LH & RH, cast frame, triangular top & round bottom holes, semi-web cam /w straight teeth, plastic safety in frame	Michel Brinkman, 2009 Bob Thrun Collection, 2017 Bob Thrun Collection, 2017	272	179	78	36	504	14.6	27	(4.5)^3(4.3)^2(4)
273 2176	Jumar, WAG	LH & RH, cast frame, triangular top & round bottom holes, semi-web cam /w straight teeth, plastic safety in frame	International Military Sales, 2009 Bob Thrun Collection, 2017	278	178	78	36	505	14.7	27	(4.5)^3(4.3)^2(4)
1905	Jumar 79, Modified Version D	LH & RH, modified cast frame, triangular top & square bottom holes, semi-web cam /w straight teeth, plastic safety in frame	Charlotte Phillips 2012	272	179	78	37	507	14.7	27	(4.5)^3(4.3)^2(4)
2305	Roloff, Version A	LH & RH, cast frame, round top & bottom holes, semi-open web cam /w straight teeth, metal safety in frame	Bill Liebman, 2017	209	176	76	37	490	14.2	26	(4.3)^6
3547	Roloff, Version B	LH & RH, cast frame, round top & bottom holes, web cam /w straight teeth, metal safety in frame	Gary LeMacs, 2022	227	176	77	36	490	13.8	27	(3.4)^4(3.2.1)
167 2342	Roloff, Version C	LH& RH, cast frame, round top & bottom holes, semi-open web cam /w straight teeth, metal safety in frame	Allen Padgett, 2003 Bill Liebman, 2017	217	176	77	38	516	14.2	26	(4.3)^5
2305	Roloff, Version D	LH & RH, cast frame, round top & bottom holes, semi-open web cam /w straight teeth, metal safety in frame	Bill Liebman, 2017	209	176	76	37	490	14.2	24	(4.3)^6
2040 2181	Roloff, Version E	LH & RH, cast frame, round top & bottom holes, semi-open web cam /w straight teeth, metal safety in frame	NSS Auction, 2016 Bob Thrun Collection, 2017	237	175	78	39	531	14.2	24	(4.3)^6
48	Roloff (Modified, Version A)	LH & RH, cast frame, round top & bottom holes, semi-open web cam /w straight teeth, metal safety in frame	Darrel Tomer, 1984	208	175	77	39	519	14.6	26	(4.3)^5
2179	Roloff (Modified, Version B)	LH & RH, cast frame, round top & bottom holes, Jumar replacement cam, metal safety in frame	Bob Thrun Collection, 2017	253	176	77	38	516	14.2	27	(4.5)^5(4.3)^4
2392	Roloff (Modified, Version C)	LH & RH, cast frame, round top & bottom holes, Jumar replacement cam, metal safety in frame	Rick Banning, 2019	237	175	78	39	531	14.2	24	(4.5)^5(4.3)^4
2000	Tokyo Top	LH & RH, cast frame, triangular top & square bottom holes, open cam /w "Z" teeth, metal safety in frame	Olivier Peron Caillet, 2015	375	177	92	36	579	14.3	26	(Z)^7