Forums: Climbing Information: Gear Heads:
Bent cam lobe
RSS FeedRSS Feeds for Gear Heads

Premier Sponsor:

 
First page Previous page 1 2 3 4 5 6 Next page Last page  View All


machino


Mar 24, 2006, 5:00 AM
Post #1 of 126 (11458 views)
Shortcut

Registered: Apr 22, 2005
Posts: 114

Bent cam lobe
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

Today I was climbing with a few partners and one happened to take a big fall on a .4 Camalot of mine. One of the inside cam lobes is now bent cosiderably, enough to stick while in the camming motion. SHould I contact Black Diamond? Should I return it?


billcoe_


Mar 24, 2006, 5:03 AM
Post #2 of 126 (11458 views)
Shortcut

Registered: Jun 30, 2002
Posts: 4694

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

Sounds like you need to toss it or downgrade it to Toprope only status to me.


Partner gunksgoer


Mar 24, 2006, 5:13 AM
Post #3 of 126 (11458 views)
Shortcut

Registered: Sep 27, 2004
Posts: 1290

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

Maybe if you posted a picture a better diagnosis could be presented. Sometimes the lobes just stick a bit and can be freed by pushing them around on the axle. It is possible though that it might be too worked. Ultimately its your call though.


mendou


Mar 24, 2006, 5:20 AM
Post #4 of 126 (11458 views)
Shortcut

Registered: Aug 11, 2004
Posts: 228

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

In reply to:
Maybe if you posted a picture a better diagnosis could be presented.

ditto...


billcoe_


Mar 24, 2006, 5:29 AM
Post #5 of 126 (11458 views)
Shortcut

Registered: Jun 30, 2002
Posts: 4694

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

In reply to:
Today I was climbing with a few partners and one happened to take a big fall on a .4 Camalot of mine. One of the inside cam lobes is now bent cosiderably, enough to stick while in the camming motion. SHould I contact Black Diamond? Should I return it?


Bent considerably.

Doesn't "Bent" mean not straight?

Doesn't "Considerably" means not an insignifigant amount, as in a lot.

I don't think they are oiling it to make it work.


My thoughts. It sounds like it was put beyond the limits and is now broken.

Trash or a discussion piece.


roy_hinkley_jr


Mar 24, 2006, 5:33 AM
Post #6 of 126 (11458 views)
Shortcut

Registered: Sep 8, 2005
Posts: 652

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

In reply to:
SHould I contact Black Diamond?

Duh.


machino


Mar 24, 2006, 5:43 AM
Post #7 of 126 (11458 views)
Shortcut

Registered: Apr 22, 2005
Posts: 114

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

http://C:\Documents and Settings\Owner\My Documents\My Pictures\Misc\DSCF0214.JPG

I guess they are not bent considerably but enough for me too notice.


Partner brent_e


Mar 24, 2006, 6:20 AM
Post #8 of 126 (11458 views)
Shortcut

Registered: Dec 15, 2004
Posts: 5111

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

In reply to:
http://C:\Documents and Settings\Owner\My Documents\My Pictures\Misc\DSCF0214.JPG

I guess they are not bent considerably but enough for me too notice.


pretty sure you have to have a link to your pics, machino.
do you have a photosite to put it up on? You can do it here, but if you want, send it to me, too, and I can put it up.

hussefelt @ hotmail.com

Brent


vandenbos


Mar 24, 2006, 6:41 AM
Post #9 of 126 (11458 views)
Shortcut

Registered: Mar 6, 2006
Posts: 3

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

wanker


dudemanbu


Mar 24, 2006, 8:07 AM
Post #10 of 126 (11458 views)
Shortcut

Registered: Jun 3, 2005
Posts: 941

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

In reply to:
wanker

that was really constructive.

If you feel like it was a manufactuer's problem that caused the cam lobe to bend, contact black diamond and they'll replace it. But if he took a whipper on static cord or something stupid like that, you're SOL.

I guess it couldn't hurt to contact them anyway.. but i wouldn't lead on that cam if i were you.


Partner heiko


Mar 24, 2006, 8:39 AM
Post #11 of 126 (11458 views)
Shortcut

Registered: Mar 3, 2005
Posts: 1505

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

I guess we'd all really love to see the picture.


gunkiemike


Mar 24, 2006, 11:07 AM
Post #12 of 126 (11458 views)
Shortcut

Registered: Oct 1, 2002
Posts: 2266

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

OK, I don't have one in front of me, but a .4 Camalot is pretty small. The lobes are fairly thick. I would have a hard time imagining that 6000 series Al with an aspect ratio of (guessing) 2:1 would bend. More likely if anything bent it was the axle. Once again, get a picture up here.


vandenbos


Mar 24, 2006, 3:30 PM
Post #13 of 126 (11458 views)
Shortcut

Registered: Mar 6, 2006
Posts: 3

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

Hello there,

I am a friend of machino's and was there when the cam lobe was bent. Allow me to try to clarify the situation.

If you look at the top of the cam lobes (ie with the stem facing directly away from you) you can see that not all of the lobes are in the right places. One of the internal lobes is angled differently than the others. Essentially it looks like this:

l l \ l

with each slash being a cam lobe.


kubi


Mar 24, 2006, 3:48 PM
Post #14 of 126 (11458 views)
Shortcut

Registered: Sep 15, 2004
Posts: 815

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

http://www.tinypic.com

takes like two seconds to upload your own pic.


trenchdigger


Mar 24, 2006, 3:55 PM
Post #15 of 126 (11458 views)
Shortcut

Registered: Mar 9, 2003
Posts: 1447

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

Sounds like you placed the cam in such a way that loaded the lobe sideways and now the axle hole is out-of-round. If it's so bad that the cam sticks, I would not use the cam. It's a keychain or christmas tree ornament now. Go buy yourself a new cam.


machino


Mar 24, 2006, 5:17 PM
Post #16 of 126 (11458 views)
Shortcut

Registered: Apr 22, 2005
Posts: 114

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

http://www.tinypic.com/view/?pic=s4chut

There is the pic. I just wanted some advice on what I should do with it as I like to be safe. As you can see it isnt bent much but it is enough for me to be worried about. Anybody have a constructive resposnse other than the computer climbers who know how to host picks really well. wankers


Partner brent_e


Mar 24, 2006, 5:29 PM
Post #17 of 126 (11458 views)
Shortcut

Registered: Dec 15, 2004
Posts: 5111

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

http://tinypic.com/s4chut.jpg


are you talking about me and the hosting pics?
I think the cam is shit, and you should replace it. Why not? 50 bucks, you get something you KNOW is safe and you don't have to worry/risk another thing.


Brent


healyje


Mar 24, 2006, 5:32 PM
Post #18 of 126 (11458 views)
Shortcut

Registered: Aug 22, 2004
Posts: 4204

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

I'd say it's pretty clear you have a bent axle there - take it back to where you bought or send it to BD. They don't use the burliest axle design so that doesn't necessarily surprise me all that much...


Partner tgreene


Mar 24, 2006, 5:36 PM
Post #19 of 126 (11458 views)
Shortcut

Registered: Oct 22, 2003
Posts: 7267

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

You didn't bend the lobe at all. You overloaded, torqued and bent the cam axles.

Had this not been a BD with twin axles, it's likely that the damage would have been much worse, and POSSIBLY even resulted in a complete failure.

I have diagrammed your image, to show where the bends are.
http://www.great-river.com/pix/bdcam.jpg


roy_hinkley_jr


Mar 24, 2006, 5:55 PM
Post #20 of 126 (11458 views)
Shortcut

Registered: Sep 8, 2005
Posts: 652

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

No way to overload a cam without any deformity to the lobes. That just shows minor scratches. Send it to BD.


delcross


Mar 24, 2006, 6:10 PM
Post #21 of 126 (11458 views)
Shortcut

Registered: Dec 5, 2005
Posts: 46

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post



paganmonkeyboy


Mar 24, 2006, 6:16 PM
Post #22 of 126 (11458 views)
Shortcut

Registered: Apr 30, 2003
Posts: 663

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

In reply to:
While we're on the subject, what's the verdict on this cam?
The trigger pulls cleanly without any binding.

errrr - pooched ? just a guess - lools like the inner lobes took some force at some point ? not sure I would lead past that unless i was aiding on it...

do *you* trust it ? the real question....maybe show us the same angle tgreene diagrammed above ? (sweet work btw t...)


Partner gunksgoer


Mar 24, 2006, 6:21 PM
Post #23 of 126 (11458 views)
Shortcut

Registered: Sep 27, 2004
Posts: 1290

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

Hmm yeah... id retire both cams.


Partner tgreene


Mar 24, 2006, 6:24 PM
Post #24 of 126 (11458 views)
Shortcut

Registered: Oct 22, 2003
Posts: 7267

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

In reply to:
No way to overload a cam without any deformity to the lobes. That just shows minor scratches. Send it to BD.
Depending upon the force exerted to the axles, and the placement/setting/binding of the lobes; while not a likely scenario, it most certainly is possible!

If you look closely at the diagram I put together, it does not appear that the lobes are FUBAR at all, just the axles.


weschrist


Mar 24, 2006, 6:28 PM
Post #25 of 126 (11458 views)
Shortcut

Registered: Aug 13, 2004
Posts: 579

Re: Bent cam lobe [In reply to]
Report this Post
Average: avg_1 avg_2 avg_3 avg_4 avg_5 (0 ratings)  
Can't Post

In reply to:
You didn't bend the lobe at all. You overloaded, torqued and bent the cam axles.

I have diagrammed your image, to show where the bends are.
http://www.great-river.com/pix/bdcam.jpg

I don't know man, the cam is rotated slightly clockwise in the picture and your diagramming doesn't really convince me. It looks like the cam foot is just shifted a bit but the axle is still straight. I would take a straight edge and check if it were my cam.

Either way, if you are sketched replace it... $50 isn't worth the risk.

And that #2 was obviously fully open when it was loaded, as indicated by the big ol' gnar gnar on the inner right cam lobe. That puts way more torque on the lobe. The last picture shows that the outer 1/2" or so of the lobe is obviously bent. I would replace that one without question... or sell it on ebay.

First page Previous page 1 2 3 4 5 6 Next page Last page  View All

Forums : Climbing Information : Gear Heads

 


Search for (options)

Log In:

Username:
Password: Remember me:

Go Register
Go Lost Password?



Follow us on Twiter Become a Fan on Facebook