Pro Bike Check: Steve Smith’s Blackboxed, Elongated Devinci Troy 650B Mountain Bike

Pro rider Steve Smiths Devinci Troy 650B mountain bike with prototype SRAM Blackbox drivetrain

After Sick Mick put up a rather quick time at the Fox Air DH on his own prototype bike, pole positionee Steve Smith had to really bring it. And bring it he did…aboard a modified version of the all-new Devinci Troy 650b trail bike.

The stock Troy gets either a 140mm or 150mm fork depending on spec, mated to a 140mm travel Split Pivot rear end. Smith was running a 160mm Rockshox Pike for the race and had a smattering of Blackbox SRAM drivetrain bits throughout. Check the full build after the break…

Pro rider Steve Smiths Devinci Troy 650B mountain bike with prototype SRAM Blackbox drivetrain

Like we saw on their bikes at Sea Otter, the team gravity riders run their piggyback shocks inverted to lower the center of gravity a bit.

Pro rider Steve Smiths Devinci Troy 650B mountain bike with prototype SRAM Blackbox drivetrain

Smith’s nickname is the Canadian Chainsaw Massacre, so Devinci used their occasionally vowelless graphical scheme to customize the frame a bit.

Pro rider Steve Smiths Devinci Troy 650B mountain bike with prototype SRAM Blackbox drivetrain

Pro rider Steve Smiths Devinci Troy 650B mountain bike with prototype SRAM Blackbox drivetrain

The suspension’s set in the lower, slacker setting.

Pro rider Steve Smiths Devinci Troy 650B mountain bike with prototype SRAM Blackbox drivetrain

Avid X0 Trail brakes keep things on the edge of control.

Pro rider Steve Smiths Devinci Troy 650B mountain bike with prototype SRAM Blackbox drivetrain

The most interesting part of the drivetrain was the modified X-Dome cassette, which could be based on the 11-speed XX1 cassette since it’s being turned by an XX1 chain. There are only seven speeds, spanning from 11t to 24t.

Pro rider Steve Smiths Devinci Troy 650B mountain bike with prototype SRAM Blackbox drivetrain

Having the 11t cog means the cassette needs to sit all the way to the outside of the freehub body, so there’s a taller ring inside the largest cog to prevent the chain from falling off and into the spokes.

Pro rider Steve Smiths Devinci Troy 650B mountain bike with prototype SRAM Blackbox drivetrain

Shifting’s handled by an X01 rear derailleur with modified super-short cage. It still has the offset upper pulley to work with the X-Horizon derailleur’s movement pattern.

Pro rider Steve Smiths Devinci Troy 650B mountain bike with prototype SRAM Blackbox drivetrain

Up front, he’s running a 36-tooth standard 10-speed chainring and X0 crankset. Crankbrothers Mallet DH pedals and e*thirteen chainguide round it out.

Pro rider Steve Smiths Devinci Troy 650B mountain bike with prototype SRAM Blackbox drivetrain

The shifters were modified to work with the smaller cassette. Note the “11″ on the front of the shifter pod was blacked out a bit with a Sharpie marker. Custom lockrings on the grips continue the Chainsaw Massacre theme.

Pro rider Steve Smiths Devinci Troy 650B mountain bike with prototype SRAM Blackbox drivetrain

Cockpit includes a Truvativ Holzfeller stem and Boobar (I think) handlebar. He’s got a carbon fiber backplate for his race number, which makes for a very flat, clean number plate that shouldn’t rattle or flap.

Pro rider Steve Smiths Devinci Troy 650B mountain bike with prototype SRAM Blackbox drivetrain

An SDG Fly saddle is clamped to a standard seatpost, not a dropper.

The wheels are the new Easton Havoc 650B wheels we spotted earlier.

Comments

Bilbo - 08/18/13 - 7:02pm

The shock is inverted to reduce unsprung weight, the change to the center of gravity is nominal and a secondary benefit.

Shane - 08/18/13 - 7:03pm

Curious how the bike was “elongated” vs the standard frame? Thanks

greg - 08/18/13 - 8:44pm

hard to say if the reservoir is much heavier than the other end; remember that the majority of the oil is in the damper body, which is the grayish part with the travel markings. the reservoir has some oil and a bunch of nitrogen.
seems to me that the real reason it’s inverted is for clearance. the reservoir shock top and (more significantly) the high volume air can take up a lot of width and would hit the frame at the upper link pivot. i havent seen any pics with that frame and an upright shock that has the high volume can.

Mr. P - 08/18/13 - 11:42pm

What Greg said.

The external reservoir has oil and an air or nitrogen chamber.

The shaft will have then have oil only.

P

martiniano ..ninão - 04/09/14 - 9:33pm

Boa sorte em 2014 este ano e seu titulo de campeão ficam com DEUS estou em São Paulo no Brasil fui

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