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New suspension tech from RockShox and Fox

By:
James Huang
Published:
March 29, 2012, 17:48 BST,
Updated:
March 29, 2012, 18:50 BST
Troy Brosnan (Monster Energy-Specialized) used a new RockShox Vivid Air during his run in Pietermaritzburg.

Troy Brosnan (Monster Energy-Specialized) used a new RockShox Vivid Air during his run in Pietermaritzburg.

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This article originally published on BikeRadar

The closer we look at the bikes of the first round of the 2012 UCI MTB World Cup in Pietermaritzburg, South Africa, the more we find. Suspension giants RockShox and Fox Racing Shox have equipped a number of key riders with new developments in fork and rear shock technology both on the downhill and cross-country sides ends of the spectrum. Lighter? Smoother? More adjustable? More like all three.

New rear shocks, stanchion coatings, and seals from RockShox

RockShox outfitted a number of downhill riders in Pietermaritzburg with new versions of the company's Vivid coil and Vivid Air rear shocks. In addition to expected revisions to the internals – sorry, we don't have details on that – are new tool-free beginning and end stroke rebound damper adjustments on both models.

PinkBike reported earlier a possible external air volume adjustment on both shocks' piggyback reservoirs for tweaking bottom-out characteristics but we only saw it on Monster Energy-Specialized rider Troy Brosnan's Vivid Air shock in Pietermaritzburg, not the Vivid coil shocks on teammate Sam Hill's or Giant factory rider Andrew Neethling's bikes.

That doesn't mean such a thing doesn't exist – and we weren't able to locate all the new shocks scattered among the field – but it's likely RockShox has multiple variants currently undergoing rider testing as part of the company's BlackBox program.

BlackBox-edition Boxxer forks were also treated to DLC-coated stanchions for smoother operation. RockShox has been playing with this surface treatment for some time now – Danny Hart won last year's world championship on DLC-coated tubes – and after this much development time, we can't help but wonder when it'll make its way into production.

We were admittedly also expecting to see some DLC-coated tubes on RockShox SID forks but alas, we didn't see any (though again, that doesn't mean they don't exist). We did note some new wiper seals on Emily Batty's (Subaru-Trek) SID XX World Cup, though.

Fox goes with air springs for pro-edition 40 downhill forks

At least half a dozen downhill riders in Pietermaritzburg tackled the pedaling-intensive course on air-sprung Fox Racing Shox 40s, including Aaron Gwin (Trek World Racing), Cedric Gracia (CG Racing Brigade) and much of the Yeti factory team. Air-sprung forks were identifiable by their non-etched top caps, which in this case were simply valve covers like on Fox's Float and TALAS forks instead of preload dials with their usual '+' and '-' indicators.

Neither team mechanics, riders, nor Fox officials on site in Pietermaritzburg would reveal any technical information though Fox race program manager Mark Fitzsimmons did stress that it would not be a MY2013 product – so don't bother calling Fox or your local dealer to place an order.

That being said, we can guess at the internal setup based on what we already know about Fox's other air sprung forks. We're proposing the Fox 40 Float (as we're calling it) will likely use a dedicated stanchion with a polished inner wall like on the 32 and 36-chassis forks instead of a drop-in cartridge that would retrofit to current 40 forks. Such a design would yield a larger air volume and lower inflation pressures plus it would require fewer parts to save weight – which we're assuming is the main goal of this new air spring in the first place.

What also isn't clear is what Fox will do for a negative spring. A secondary air chamber is a possibility but Fox continues to use a coil spring for that function in the company's other air-sprung forks so ultimately we're guessing Fox will go that route again. Either way, we'll have to wait until later for more information.

Fox could have easily further disguised this air cap by adding the preload, + and - laser etchings of the standard knob

Fox could have easily further disguised this air cap by adding the 'preload', '+' and '-' laser etchings of the standard knob

Fox DOSS dropper seatpost looks ready for production

Dropper seatposts were commonplace on downhill bikes in Pietermaritzburg given all the pedaling required on the way to the finish line. Not surprisingly, RockShox and Fox dominated the landscape with their Reverb and DOSS models. We didn't notice much of anything new on the former post aside from the beefed-up hose attachment that was introduced earlier but we did learn a few new things about the DOSS.

We at Cyclingnews were hopeful that the somewhat clunky nested twin lever remote might be further refined prior to launch but it appears that the design is here to stay. Tap the shorter lever to drop the post 60mm, then push it again – or the larger lever – to drop the post all the way. Spring tension is notably high when pushing the shorter lever since you're working against two springs instead of one but the ergonomics feel ok and the seatpost action itself is impressively smooth and fluid.

Speaking of the post, it was also pointed out to us that the DOSS head is fully symmetrical, meaning the side-mounted cable actuated arm can be positioned on either the left or right side of the bike depending on routing preferences.

And a closer look at that Fox electronic damper-equipped fork

We still haven't been able to get any more information out of the folks at Fox Racing Shox on the battery-enhanced fork being used by Geoff Kabush (Scott-3Rox) and Catharine Pendrel (Luna) but conversations with staff on site in Pietermaritzburg suggested our recent speculative article isn't far off the mark. That being said, it sounds like the system we proposed may be a little further out than we had hoped, though.

We did sneak in a much closer look at Pendrel's machine, however, and gleaned some additional details. The remote looks to be some sort of thumb-operated rotary setup with multiple modes – what exactly each mode corresponds to, though, we can't say – and there's not one, but two wires connected to the top of the damper.

Also, the wire connections confirm to us that this is a joint project between Fox and Shimano. Roadies will quickly recognize from the images that these plugs are currently used on Shimano's Dura-Ace Di2 group.

And the sleuthing continues.

There are actually two wires fed into the top of Fox's new development fork

There are actually two wires fed into the top of Fox's new development fork

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