Fresh Tech Round-Up: Fort William Downhill World Cup

After several soggy laps of the pits at Fort William World Cup, we were rewarded with a handful of fresh new tech to share with readers. A highlight would have to be Aaron Gwin’s prototype Intense DH Bike with i-track suspension, as well as Camille Balanche’s almost production Commencal Supreme DH V5. We also got eyes on the new RAAW DH bike that is still under development, raced by KJ Sharp and other members of the 555 Gravity Racing Team (more info to come), as well as sneak peeks at a bunch of componentry that is yet to make it to production. Most of it we have very little information on, but still felt it was worth sharing photos for curiosity’s sake. Feast your eyes.

Fresh Tech from Round 2 UCI World Cup Downhill in Fort William

trp dh7 derailleur prototype hall lock b-knuckle clutch

The Hall Lock gives this unmarked derailleur away as a prototype from TRP; we spotted this one on Aaron Gwin’s Intense

Gwin’s bike had more than its fair share of prototype componentry; his mechanic, John Hall, gave us some insight on the prototype TRP DH7 derailleur, development of which is still ongoing. John played a big part in the development of TRP’s derailleurs, having invented the “Hall Lock”, which is essentially a clutch mechanism for the derailleur’s B-Knuckle. The Hall Lock is present on the current DH7 derailleur, and the TR12 for 12-speed cassettes, but its design is further refined on the prototype we saw on Aaron Gwin’s bike (incidentally, we spotted a prototype TR12 recently, too).

The lever for the adjustable ratchet clutch mechanism appears to have given way to a lock button similar to that seen on SRAM derailleurs

John tells us the idea to introduce what is essentially a lock for the derailleur’s B-Knuckle came from the desire to keep drivetrain noise to a minimum. On a regular derailleur, say from SRAM or Shimano, just as the cage can articulate about the B-Knuckle in accordance with its chain tensioning function, the position of the B-Knuckle itself is able to pivot about the mounting bolt, a function that is necessary to allow the rear wheel to be removed.

It is not, however, necessary for the derailleur’s primary function of shifting the chain through the different sprockets of the cassette. This movement can create noise when riding rough downhill tracks, something that most riders, including Aaron, could definitely live without. So, John created the Hall Lock, which locks the B-Knuckles position relative to the mounting bolt, eliminating movement and any noise associated with it. 

John stresses that he is by no means the first person to attempt to make drivetrains quieter, stating that plenty of World Cup mechanics have been machining various solutions over the years in a bid to keep their riders’ bikes running as quietly as possible. 

hall lock refinement prototype trp dh7 derailleur

The Hall Lock remains, but the team are working on creating a non-adjustable version of it

The Hall Lock seen on the current DH7 and TR12 derailleurs is adjustable by virtue of a set screw that can be seen on the machined body of the derailleur, with the Allen head pointing toward the front of the bike. This is still present on the prototype DH7 seen on Gwin’s bike, but John tells us they are working on a solution to eliminate this adjustment, so that the Hall Lock is a simple on-off switch that doesn’t loosen over time. 

The goal is for the Hall Lock’s tension to hit a sweet spot whereby the B-Knuckle isn’t able to move under normal riding conditions, but it is able to move when the derailleur is hit off a rock, in order to avoid catastrophic, race-ending damage. So, even with the Hall Lock on, you can still move the B-Knuckle if you apply enough force.

trp dh7 prototype derailleur on aaron gwins prototype intense m279 hp1

John wasn’t able to share any details on other changes to the TRP DH7, stating only that it is made of a mix of composites and aluminum.

prototype dh crankset from trp on aaron gwins intense

In addition to the prototype derailleur, Gwin’s bike was also fitted with what we believe to be a prototype TRP crankset.

vee factory ride prototype dh tires on aaron gwins intense

Elsewhere on Gwin’s bike, new rubber from Vee Tire Co was seated to the e*Thirteen LG1R DH wheelset. “Vee Factory Ride” were the only words printed on the hot patch, but a spare tire sat on John Hall’s workbench featured the words “No Sharpie” indicative of a Vee prototype. Indeed, we’ve not seen this particular tread pattern on any of Vee Tire Co’s production tires, so expect to see fresh rubber from those guys later on this year.

vee tire co mud spike dh fort william world cup

vee tire co no sharpie dh mud spike tire

Later on, we swung by the Commencal Vee tent where we spotted these No Sharpie Mud Spikes from Vee Tire Co, too. They feature Vee’s TOP40 rubber compound.

Camille Balanche first ride schwalbe prototype magic mary tires

We also saw new rubber from Schwalbe, with “First Ride” Magic Mary tires on Camille Balanche’s Supreme DH V5. There are no alterations to the tread pattern, but we are told this is a new rubber compound from Schwalbe that is close to production.

prototype gt fury dh bike new linkage design

Elsewhere in the pits, GT Factory Racing were on a new GT Fury, which appears to have a revised linkage design whereby the rocker sits inboard of the seat tube struts. No close-ups of this cleaned up specimen were permitted, but we were allowed to get a look at one sat outside in the rain, covered in Fort William’s worst. The front triangle has certainly seen an overhaul.

new gt fury fort william world cup dh

It looks like the new bike will retain the ability to alter chainstay length through a flip-chip at the dropout, permitting a 29″ or 27.5″ rear wheel

A new flip-chip at the lower shock mount looks as though it may offer more than the two positions offered on the current Fury, with capacity to alter the fore-aft position as well as the vertical position. We reckon this could offer opportunity to alter the linkage’s overall progression as well as the bike’s bottom bracket height.

Reece Wilson’s Trek Session was home to what looks to be a new RockShox Super Deluxe Ultimate Coil Shock. The “BlackBox” decals are indicative of that, as is the new orientation of the compression damping dials on top of the piggyback.

kj sharp raaw dh bike prototype

The 555 Gravity Race team were all aboard a new RAAW DH Bike; this one is KJ Sharp’s, more info on which we shall have for you shortly

loic bruni specialized demo ohlins electronic suspension hidden under cover

Unfortunately, Loic Bruni broke his collarbone in practice. His Specialized Demo sat unused in the stand, where a carbon fiber cover still hides what we have hypothesized to be prototype electronic suspension damping from Öhlins.

Subscribe
Notify of
guest

This site uses Akismet to reduce spam. Learn how your comment data is processed.

0 Comments
Inline Feedbacks
View all comments