Adventure Projects is hiring an Android engineer to join us in Boulder, CO
Mountain Project Logo

Cross reference chart for cam sizes?


Original Post
Hiro Kurotsuchi · · Colorado · Joined Apr 2012 · Points: 300

Any good resources out there for interpreting the various sizes of cams past and present?? In particular for easing interpretation of gear recommendations here and in the guides.

Use cases:
1) Book says gear to 1.5". Which C4 and Heliums reach this size?
2) Book says rack to 2.5 Camalot (i.e. old sizing), which C4/Helium covers that?
3) Anytime I want to do a quick conversion from C4 to Helium estimate.
4) IC route needs lots of #1s, which Helium(s) would I grab to supplement?

I Googled and found reasonable charts for cams of the past, but they didn't have data for the current generation of gear. In any case, I can imagine a nice chart that has both graphic representations of the overlaps & conversions and the numerical data.

Julius Beres · · Boulder, CO · Joined Jun 2008 · Points: 270
blackdiamondequipment.com/u…

Chart comparing old (odd sized) and new C4 camalots.

The intro to the Indian Creek guide book has an excellent chart listing all the cam sizes for specific widths (uses older BD cam sizes rather than new C4s, but you can convert with the chart above.)

If it says you need lots of 1s at the creek, it probably mean wild country 1s, since creek guides usually give sizes in friends.
FrankPS · · Atascadero, CA · Joined Nov 2009 · Points: 275

The Supertopo guide books have a cam cross reference chart in them.

FreeRangeHuman · · safari van · Joined Feb 2012 · Points: 0

Friends are basically sized on the inches. So 1 friend is about 1".

BD sizes are a bit different, check out the Indian creek book or most supertopo books for the best charts

If you're just starting out and scared to bring the wrong gear, just bring more. It'll keep you safe and get you making your own decisions on gear.

Many times the guidebooks gear rccommdations are pretty generic or just flat out wrong. Beware.

Sean G · · New Carlisle, IN · Joined Apr 2012 · Points: 575
wufpak18 · · Salt Lake City, Utah · Joined Jul 2010 · Points: 15

Maybe this helps....

Cam sizing

Crag Dweller · · New York, NY · Joined Jul 2006 · Points: 125

you can find the chart that wufpak posted here: info.rockrun.com/cam-size-c…

It's a little easier to view as a pdf.

Taylor Jenkins · · Unknown Hometown · Joined Nov 2011 · Points: 0

This is a little out of date but it includes some of the lesser known and older brands.

clydesoles.com/Front/Camsbr…

wufpak18 · · Salt Lake City, Utah · Joined Jul 2010 · Points: 15
Crag Dweller wrote:you can find the chart that wufpak posted here: info.rockrun.com/cam-size-c… It's a little easier to view as a pdf.
Good call. I just saved the pdf when I found it online so I didn't quite remember where I had found it
bearbreeder · · Unknown Hometown · Joined Mar 2009 · Points: 3,065
Guideline #1: Don't be a jerk.

Post a Reply to "Cross reference chart for cam sizes?"
in the Trad Climbing

Log In to Reply