Search This Blog

Inside Alex Honnold’s Tricked-Out New Adventure Van

Back in 2014, pro climber Alex Honnold gave us a tour of the 2002 Ford Econoline E150 he used as his mobile base camp. That van served him...

Top strip

Wednesday, October 24, 2018

Is This Pivoting Bike Fork the Future of Front Suspensions? https://ift.tt/2yzfEdN

Mountain bike suspension has improved exponentially in the past decade. Rear shocks are dialed, but the front suspension hasn’t caught up. Trust Performance hopes to change that with a revolutionary suspension called The Message.

Trust Performance builds a pivoting front fork. Today, it announced The Message, a unique fork that uses pivots, not stanchions, to give mountain bikers supple and stable front suspension. The fork aims to give mountain bikers better cornering, easier setup, and improved performance on all terrain, including small and large bumps and corners. The fork hits the market today for $2,700. Read on to learn about our experience testing this unique design.

“When a telescopic fork compresses, the steering is less stable,” explains Dave Weagle, one of the best known modern mountain bike innovators. He’s responsible for the DW Link used by Pivot, Ibis, and others, and co-founded E13 Components and Evil Bikes.

Many pivoting fork prototypes have focused on making front suspension lighter, or eliminating fork dive when a rider brakes. Telescoping forks have so much sticktion— the resistance to a rider initiating fork travel — that designers have to engineer flex into them. This allows a rider to engage the suspension, which typically takes around 50 pounds of pressure.

Flexibility in a stanchion fork reduces initiation force. But it also increases instability, which makes it harder for a rider to ream corners and pop over larger obstacles. “On modern bikes, larger wheels, bigger tires, and slacker head angles reduce that instability, but you can still feel it,” said Weagle. “And in order for a front suspension fork to absorb shock in both small and large bumps can require Ph.D.-level tuning skills, and even then you’re not always able to achieve perfection.”

The Solution

Weagle teamed up with Hap Seliga, co-founder of Competitive Cyclist, and Jason Schiers, co-founder of Enve Composites, to form Trust Performance. The Message ($2,700) is a carbon front fork with pivots, not stanchions. It moves on bearings the company designed and now produces.

Unlike past pivoting fork designs, The Message’s mission is better cornering, easier setup, and better performance on all terrain — small bumps and large ones — and in corners.

The Message delivers 130 mm of contour travel through a twin-tube thru-shaft damper with a four-bar linkage design that Trust Performance says provides incredible stability, control, and traction across a wide range of trail conditions. With a full-carbon chassis, steerer, and links, the Message is competitively lightweight and stiff compared to other high-end forks on the market.

It’s easy to set up, comes with a lifetime bearing warranty, and boasts a 250-hour service interval. And, it bolts on to any standard mountain bike headset, no modifications required. The single SKU The Message fits on mountain bikes with a traditional tapered head tube, and it runs a 110 x 15-mm Boost front axle with a standard 180- to 203-mm post-style brake mount. One model will replace 29″/27.5”+ telescopic forks with 110-140 mm of travel and 27.5-inch telescopic forks with 130-150 mm of travel.

How It Works

“The Message allows the front of the bike to reap the benefits that rear suspension designs have enjoyed for years,” says Weagle. “Supple performance early in the stroke, supported with a progressive mid-stroke and more bottom-out resistance at the end of the travel — like a well-designed rear suspension, Trust’s linkage absorbs impacts and eliminates wallowing, so the rider doesn’t blow through travel during a heavy pedal.”

Due to the unique design and axle path of the linkage system, the front wheel on The Message provides a self-aligning dynamic. The rider experiences greater control in a slide and more predictable steering input in most conditions.

The Message also solves the “diving when braking” conundrum. Links in The Message are low and trailing. On a telescopic fork, compression is at an angle, and braking forces are putting all your weight on the fork, so it compresses. With The Message, hit a rock or bump and in the first part of compression, the wheel doesn’t dive or extend. A telescoping fork is constantly ramping up sticktion as you further engage the suspension. And it can take 25-200 pounds to engage it. The Message takes 2-4 pounds of pressure to engage suspension.

Maintenance and Setup 

The fork needs significantly less servicing than a telescoping fork — every 250 hours of riding instead of every 100 hours. And it’s easy to set up and operate. Air springs are set at the same psi as the rider’s body weight. Damper settings are controlled with three external settings — open mode, medium mode and locked out. Turning clickers all the way clockwise sets the fork for a 300-pound rider. Every counterclockwise click on the rebound and open mode compression is equal to reducing rider weight by 10. Huck pucks in the damper, like tokens in other forks, can be used to change air volume. A three position load adjuster provides trail and “lockout” modes, though even with the fork locked out, it still manages bumps if you slam into something.

How It Rides

We tested this fork, in Deer Valley, UT for a single afternoon. The test scenario was to ride an M Pivot Switchblades with 27.5 wheels back to back, one with a Rock Shox Pike and one with The Message. We lapped the same trail multiple times on each. Then we took the bike with The Message for a longer run, followed by a big descent from near the top of Park City’s Guardsman’s Pass down to Midway.

The Message was superior in at least three scenarios

First, riding down a stretch of chunky gravel from the end of the single track to the base of the ski lift. There, its ability to absorb chatter and vibration better than a telescoping for was noticeable. Second, hitting rocks, roots and ruts was less jarring than on a telescoping fork. Finally, the corners rode differently — in a good way — though its hard to describe exactly given such a short time on board.

Overall, we liked the fork enough we didn’t want to give it back and the end. We are eagerly anticipating more time on it on our home trails.

Trust Performance The Message Coming Soon

By the time you read this story, production forks will be coming off the Park City, UT-based team’s factory line, and The Message will be for sale from the company’s website.

The Trust Performance team believes this fork can impact a broad spectrum of two-wheeled pursuits. They also acknowledge that though they’re all industry veterans, they “have a lot to prove to be competitors to SRAM and FOX,” said Weagle. “We believe we’ll provide benefits outside the usage window of the current product, or we wouldn’t be doing this.

Though Trust Performance is keeping its cards close to its chest as to where this project is headed, all three partners confirm that their goal is not to make pinnacle product for racers and elite cyclists, but “to touch as many riders as possible and to make as many riders lives better as possible.”

Trust Performance The Message Tech Specs

  • Design: Four-bar trailing multilink front suspension
  • Construction: Full carbon chassis, steerer tube and linkages with aluminum pivots
  • Travel: 130-mm contour travel
  • Wheel size: Fits 27.5”, 27”+, and 29”
  • Tire clearance: 762 x 66 or 748 x 78
  • Rotor size: Direct mount 180-mm rotor (max 203 mm)
  • Suggested bikes: 29” / 27.5”+ bikes designed around 110-140 mm of travel; 27.5” bikes designed around 130-150mm of travel
  • Weight: 1,980 g
  • Damper technology: Proprietary twin-tube, thru-shaft damper
  • Adjustments: External rebound; three-position compression adjust (open, medium, firm)
  • Hub spacing: “Boost” 100 x 15-mm thru axle standard, or with “torque caps”
  • Axle to crown: 535 mm
  • Steer tube diameter: Tapered (1⅛-1½”)
  • Price: $2,700

The post Is This Pivoting Bike Fork the Future of Front Suspensions? appeared first on GearJunkie.



from GearJunkie https://ift.tt/2yzfEdN
https://ift.tt/2O3HnIo

No comments:

Post a Comment