Author |
|
6-Jun-2015 9:59:26 AM
|
Got any seized / broken / retired or otherwise dead cams? I'm after some cam lobes for an experiment, around the C4 No 3 size (50 to 80mm). Will pay for postage, or pick them up if you are in central Victoria. Not smart enough to do the math to make my own!
|
6-Jun-2015 4:13:16 PM
|
Hi Cliff.
No, not part of the cam failure thread, just another of my crazy ideas — a new bit of aid climbing gear that needs a cam lobe. If it works I'll post about it here. If I never post here again assume it didn't work! One of the reasons I like aid climbing is you can make your own stuff as it doesn't have to be rated.
|
14-Jun-2015 9:13:38 PM
|
Just saw a post from Lightfoot with a link to a cam engineering page.
Please don't make me do this math, it makes my brain hurt! I just want to chop a cam lobe out of a dead unit!
|
14-Jun-2015 10:10:21 PM
|
As it happens, I have a dead (damaged after being dropped from ~80m) C4 #3 that I'd be willing to give up.
|
14-Jun-2015 10:54:57 PM
|
Dave! Saves me from:
>The shape of the cams on a typical camming device is given by the formula: r = eµř
>r is the radius, e is the natural logarithm base, µ is a coefficient which determines how >"fast" the spiral opens up (and it has more interesting significance, as seen later) ř is the >angle measured in radians….
I'll be forever grateful, will PM about sorting postage.
|
29-Jun-2015 10:08:19 AM
|
On 29/06/2015 Cliff wrote:
>Hi Tim. Sorry, Must have given my old cams away. Heard your CI class went
>well; missed you at the jam. Good luck with your search. I'll ask around.
Thanks Cliff.
|