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Cam Placement Question
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By Brian Hudson
From Lenoir, NC
Mar 4, 2013
Valor Over Discretion (5.8), RRG

patto wrote:
How does an axle "compensate for the load"!???? That doesn't even make sense. Regardless if you pick you cams based on the ability to hold passively then you should stick to bolts. Double axles are great for the improved range, passive strength is a mere side effect.

a good side effect nonetheless. I agree though, that there are more pertinent features to be considered when buying cams.


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By JMo
From Tucson, AZ
Mar 4, 2013
vertebrae roof

What I want to know is what winder is talking about way up in the thread, fully retracted cam as passive???? Um, that sounds more like stuck and definitely not passive....BD illustrates the passive placement, it is unretracted.


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By Jake Jones
From Richmond, VA
Mar 4, 2013
Me and the offspring walking back to the car after a day of cragging.

patto wrote:
How does an axle "compensate for the load"!???? That doesn't even make sense. Regardless if you pick you cams based on the ability to hold passively then you should stick to bolts. Double axles are great for the improved range, passive strength is a mere side effect.



I think he was referring to the manner in which the lobes are stopped. If you have a single axle cam, and the stops on the lobes shear off under a load, then there's nothing stopping the lobes from inverting and failure occurs.

In a double axle cam, one axle stops the opposing lobes, and the other axle stops the other two lobes. Pretty difficult to shear an entire axle. If you do, let me know, I'd love to see the end result. So, in essence, the axle doesn't "compensate for the load", but it is the axle stopping the lobes, thus holding the placement in a double axle design- which is inherently much stronger than stops designed on the lobes themselves in a single axle design.

And I agree with you. I don't shop for cams thinking; hmmm... I wonder what the PASSIVE strength of this puppy is- that's not a determining factor.


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By Greg D
From Here
Mar 4, 2013
Out of the blue.  Photo by Mike W. <br />

Brian Hudson wrote:
Digging up an old thread, but today I placed a .3 C4 passive in a good slot it was perfect for. It was narrow on the face and abruptly widened on the inside (like a T-shaped slot) with a nice ledge for the cam to rest on.


Seriously, you woke up this dead thread to tell us that. And in other exciting news, yesterday I placed a hex and it looked really cool!

Next time go place a passive cam and take a big whip. Then you might have something remotely interesting. Geez.


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By Brian Hudson
From Lenoir, NC
Mar 4, 2013
Valor Over Discretion (5.8), RRG

Greg D wrote:
Seriously, you woke up this dead thread to tell us that. And in other exciting news, yesterday I placed a hex and it looked really cool! Next time go place a passive cam and take a big whip. Then you might have something remotely interesting. Geez.

My bad, stonemaster. I eagerly await your next thrilling tale of adventure.


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