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New BD cams - rumor?
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Jul 12, 2012
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Looks like their traditional double axle in that picture. Ray Pinpillage
From West Egg
Joined Jul 23, 2010
130 points
Jul 12, 2012
Ray Pinpillage wrote:
Looks like their traditional double axle in that picture.


That it does. Perhaps "stacked axle" merely refers to moving the springs inside the lobes? Curious...
Aric Datesman
Joined Sep 16, 2008
145 points
Jul 12, 2012
Chuck Norris can Divide by Zero
It is my understanding that at a certain small size they no longer have enough room to put the axles side by side. They may have rectified it by stacking (offset maybe) the axles.

PT
paintrain
Joined Jan 22, 2007
86 points
Jul 12, 2012
paintrain wrote:
It is my understanding that at a certain small size they no longer have enough room to put the axles side by side. They may have rectified it by stacking (offset maybe) the axles. PT


This.
S Denny
From Aspen, CO
Joined Sep 25, 2008
24 points
Jul 12, 2012
Scouting
bd vs metolious 2
bd vs metolious 2


they look sweet to me, being the bd fan that i am........probably won't buy them though cuz i already have doubles of master cams and offsets.

there is one big thing that stands out for me in comparing them to the master cam (assuming the above pictures are to scale and can be compared as such), the trigger wires on the master cam are almost twice as long.....meaning ur placement can go almost twice as deep if need be. looks like the X4 will only be able to do shallow placements. it seems like bd usually thinks of everything but why not this?
Rude Boy
From San Francisco, CA
Joined Apr 29, 2012
575 points
Jul 12, 2012
Scouting
Mia Tucholke wrote:
I love my 3.5s....... The ultimate fist for me!!!


that sounds so obscene......giggity, giggity
Rude Boy
From San Francisco, CA
Joined Apr 29, 2012
575 points
Jul 12, 2012
paintrain wrote:
It is my understanding that at a certain small size they no longer have enough room to put the axles side by side. They may have rectified it by stacking (offset maybe) the axles. PT



Doesn't look in the pic, but time will tell I suppose (by which I mean I don't have a better theory)

EDIT: As for the too-small thing, that's a limit of the a combination of the stress/strain curve of the material the axles are made of and the thickness and tensile strength of the portion of the lobe around the axle, and yup, at a certain point dual axles on the same plane just won't work. Pic above makes them look like they're on the same plane, but again, time will tell...
Aric Datesman
Joined Sep 16, 2008
145 points
Jul 12, 2012
The wires being shorter on the BD cam should be an advantage, not a disadvantage, for the reason Will S points out. The distance from the lobes of the cam to the trigger is going to affect how easily you can place them deep -- not the length of the trigger wires. Steve86
Joined Jul 17, 2011
10 points
Jul 12, 2012
Some Random Guy wrote:
there is one big thing that stands out for me in comparing them to the master cam (assuming the above pictures are to scale and can be compared as such), the trigger wires on the master cam are almost twice as long.....meaning ur placement can go almost twice as deep if need be. looks like the X4 will only be able to do shallow placements. it seems like bd usually thinks of everything but why not this?


lol fail logic
NorCalNomad
From San Francisco
Joined Oct 6, 2011
116 points
Jul 12, 2012
Scouting
Having shorter wires like that could have an advantage though, if you've ever seen a deep horizontal placement of a mastercam where the wires run over an edge and when loaded it self-retracts lobes, causing the cam to fall out...well that probably wouldn't be likely to happen with shorter wires.

i completely agree with that but i think my explanation was not clear enough. chris mac explains exactly what i meant in this video at about 1 minute in. not the total length from the lobes to the trigger but from the lobes to that first chunky piece on the stem. but who really knows until we can use them.

Rude Boy
From San Francisco, CA
Joined Apr 29, 2012
575 points
Jul 12, 2012
crack at undisclosed location - my little proj
looks kinda like a cross between a master cam and an alien. Timmamok
From Durango, CO
Joined Sep 1, 2008
134 points
Jul 13, 2012
If this is at the OR show it might be over a year before you see them in stores.

Looks sweet but I don't see a reason to go out and buy another set of cams.
Tradoholic
Joined Apr 17, 2004
12,471 points
Jul 13, 2012
me on my redpoint
They are expected to be released next Fall. It is BD so it could be a longer than that as well. Dave Cummings
From Grand Junction, CO
Joined Jul 3, 2007
213 points
Jul 13, 2012
Fuel for the conspiracy-minded gear whores like me, which I just posted to ST:

Huh. Did a bit of digging just now, and that excentric-bearing cam patent (US6042069) was filed by Tony Christianson in 1998. He had previously filed another patent (US4643377) in 1985, which looks surprisingly like the original patent on the U-stem Camalot. I've not seen him named in later BD patents, but seems there might be a relationship there from the dual axle thing and the eccentric-bearing cam thing certainly fits the sound of the stacked axle thing.

Just enough of a connection there to make me really wonder if I've stumbled upon something....

Images from the Eccentric bearing cam patent:

Aric Datesman
Joined Sep 16, 2008
145 points
Jul 14, 2012
me on my redpoint
Bam!
Bam!
Dave Cummings
From Grand Junction, CO
Joined Jul 3, 2007
213 points
Jul 14, 2012


Even though if they are only going into a red c3 size I am disappoint, but still want.

Lord the twisted "perspective" and isometeric views in patient drawings always burn my eyeballs.
NorCalNomad
From San Francisco
Joined Oct 6, 2011
116 points
Jul 14, 2012
But don't the yellow C3 and the blue C4 cover virtually the same size range? Khoi
From Vancouver, BC
Joined Oct 12, 2009
13 points
Jul 14, 2012
Doesn't look like they bring much new to the small cam market. Bummer. Still look like a good cam, though. Pete Spri
Joined Jun 1, 2009
138 points
Jul 14, 2012
Scouting
according to outside, available spring 2013 and $70.


camalot x4
camalot x4



camalot x4
camalot x4
Rude Boy
From San Francisco, CA
Joined Apr 29, 2012
575 points
Jul 14, 2012
Looks to me like stacked axle thing is quite similar to what was done on the eccentric bearing thing I posted up thread.... Axis of rotation for opposing lobes are shifted away from each other by eccentrics on the axle. Aric Datesman
Joined Sep 16, 2008
145 points
Jul 14, 2012
>

"Hi, I'm Chris Mac with Super Awkward gear reviews..."

Love the guy, but he could stand to do more than one take on some of those... :-p


Good illustration on the shallow placements. I prefer the BD X4 design to the mastercam design in the connection between trigger and trigger wires, at least as it's shown. The two plastic-sheathed wires on the mastercams get damaged very easily if you load them over an edge, even at body weight.
CWood
From SLC, UT
Joined Oct 18, 2009
48 points
Jul 14, 2012
Scouting
"Doesn't look like they bring much new to the small cam market."

bd is touting an increase in range of 20%. i agree with will s, that's a huge benefit especially for the smallest sizes.
Rude Boy
From San Francisco, CA
Joined Apr 29, 2012
575 points
Jul 15, 2012
I dunno, Randome Guy.... Sounds like the "best in class" marketing hype used for cars. Sure, 20% is an impressive sounding number, but 20% more than *what*? If they're talking 20% more than Mastercams, color me less than impressed as Metolius uses a much more conservative cam angle (which gives less range) than BD and that alone will account for a goodly portion of the 20% increase.

Now, 20% more than Aliens... Yeah. That would be impressive but I doubt that's the case.
Aric Datesman
Joined Sep 16, 2008
145 points
Jul 15, 2012
Scouting
the article says "20 percent more range than other three-cam units". the green alien and #2 c3 have the same range albeit at a slightly different size. so i guess that puts at least one cam with better range than an alien. as for the rest, just gotta wait and see until they release all the specs.

this tickles the gear whore in me too but i'm losing interest until i can actually have one. precious..........
Rude Boy
From San Francisco, CA
Joined Apr 29, 2012
575 points
Jul 15, 2012
Scouting
btw aric, you an engineer. just curious? Rude Boy
From San Francisco, CA
Joined Apr 29, 2012
575 points


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