A 29er that handles better than a 26” wheeled bike.

• G2 for 29ers have an exclusive and increased 51mm offset fork, reducing the trail to that of a 26” wheeled bike for neutral, instinctive handling
• G2 offset only available on Fisher 29ers
• Fit smaller riders - the small frame can fit riders down to about 5’0” due to increased G2 fork offset for less toe overlap
• The wheelbase remains the same for high speed stability. The amount of trail is reduced for more neutral handling at slow speed, and the cockpit was shortened to allow the rider to weight the front wheel more effectively.

• Increased fork offset = Reduced trail = quicker steering
• Decreased reach = improved ability to weigh front wheel
• Wheelbase remains the same = Retains climbing, descending ability

Basics
DRCV technology has two critical elements that set it apart from all other air shocks on the market:

1. The Dual Rate Control Valve
This is a position sensitive valve that opens the passage way to the secondary air chamber at a predetermined point in shock travel.

2. Mid-Mount Design
The upper eyelet has been moved to the middle of shock, allowing additional air volume to be placed on top of the shock.

Key DRCV Shock Technology Benefits

1. Performs like a coil shock, but at the weight of an air shock
2. Air spring characteristics are both velocity sensitive and position sensitive
3. Less progressive than a standard air sleeve, but more lively than XV air sleeve
4. No weight penalty over a standard Fox RP23 XV shock
5. Highly tunable - spring curve can be tuned from being fully flat and linear to extremely progressive
6. Built by Fox and uses an RP23 damper to ensure quality and serviceability with a brand name customers trust

The DRCV shock was designed in a partnership between Gary Fisher and Fox. The goal was to create a shock for a long-travel trail bike with the best attributes of both coil and air shocks. It is a proprietary shock only found on Fishers.

The air-sprung Fox Float with Dual Rate Custom Valve (DRCV) is the closest thing to coil spring performance in the marketplace. Since it is still an air shock it is still lightweight and highly tunable.

During Initial Setup:

1. The Fox DRCV shock features a unique schroeder valve that pressurizes both air chambers to equal air pressures in both chambers. This allows for easy initial setup.
2. As the shock compresses through the first half of travel - that is, before the plunger opens up the second chamber - only main chamber pressure increases.
3. At 40% of travel, the plunger is engaged, opening up the pathway to the second air chamber.
4. As the shock compresses through the rest of the travel, main and secondary chamber pressures increase equally since the plunger is activated and the pathway is open.

As the Shock Rebounds:

1. At full compression both chambers have equally high pressures since the plunger is activated.
2. As the shock extends to 40% length, both chambers decrease in pressure equally since the plunger is activated and the pathway between chambers is open.
3. At 40%, pressures are still equal, and the plunger closes the pathway.
4. As the shock finishes extending to its original length, the main chamber pressure continues to drop to its original pressure while the upper chamber remains pressurized since it is completely sealed.

During Subsequent Riding:

1. At the beginning of the stroke, under no pressure, the shock is fully extended and main chamber has much less pressure than the secondary chamber.
2. As the shock compresses through the first half of travel before engaging the second chamber only main chamber pressure increases.
3. Just a hair before the plunger activates the secondary chamber (at 39% travel), the main chamber pressure has increased to the point that it is almost identical to the secondary chamber pressure - the two pressures are practically identical. This means when the plunger opens up the pathway between the two chambers at 40% travel, there won't be any pressure differences between chambers and the user won't feel any sort of 'transition.'
   

DRCV Performance
The Fox DRCV technology is based on a smartly functioning plunger between two air canisters.

The plunger engages the second air chamber midway through its stroke. This is right before the shock would "ramp up" in a standard air can. By engaging the second air chamber the shock can maintain a predictable, linear compression rate much like a coil spring.

What Does the Rider Feel?
At the end of its stroke, the DRCV shock avoids the "harsh ramping up" effect of a single air canister. It's a smooth linear feel that keeps the rider in control. But because the DRCV acts like a single air canister for small bumps it also provides the smooth feel of an air canister without any flat pockets in the midstroke that an XV shock may provide. In short, it's coil spring performance without the weight penalty.

Bump Compliance
The differences between how a standard air shock handles small bumps and big bumps and how the Fox DRCV handles small bumps and big bumps is pretty dramatic and worth an explanation.

Standard Fox Float RP23 Speed Sensitivity
Note that the lines on this chart, which represent different shaft speeds -- forces from bigger bumps "come at" a shock faster than those from smaller bumps -- don't deviate much. The RP23, like all traditional single canister air cans, responds similarly to all bumps. Regardless of bump size, a single air canister shock responds the same. This can be fine if the rider encounters consistently sized bumps and the shock is tuned to handle that consistent terrain. But in varied terrain, single air canister shocks ramp-up in the last quarter of the shocks travel.

DRCV Speed Sensitivity

In varied terrain (i.e., real world riding) you want a shock that can handle a variety of terrain in a consistent controlled manner.

The DRCV chart shows that at slow shaft speeds of 5-10 in/sec (small bumps), the DRCV works like a single air can. It absorbs small bumps in a consistent, linear fashion. But for bigger bumps at high shaft speeds of 20-30 in/sec, the second air canister opens up to allow for more controlled compression, more like a coil spring.

You'll note that on the first single canister chart there's a distinct "ramp up" at the end of the stroke regardless of shaft speed. Some ramp up is good, but a more gradual ramp up feels more controlled to the rider.

So on the DRCV chart, the ramp up for the faster shock speeds (bigger bumps) is more gradual and more controlled.

In short, the DRCV is an air shock capable of differentiating between small bumps and big bumps and reacting differently to each. The result is the rider stays in control over all types of terrain.

A common criticism of full-suspension 29ers is the long wheelbase. So Fisher figured out how to shorten the chainstays and wheelbase for a bike as nimble as any 26" full-suspension bike.

• Seat tube is moved forward and out of the way of the rear wheel
• Direct-mount front derailleur saves an additional 9mm vs. clamp-on front derailleur
• Chainstay and wheelbase shortened for a more nimble ride

2009: Chainstay = 462mm
Wheelbase = 1126mm

2010: Chainstay = 451mm
Wheelbase = 1114mm

Active Braking Pivot (ABP)

ABP keeps suspension active while braking. You can brake later and harder in a corner and still have the suspension freely moving to keep you in control. ABP improves lateral stiffness as well. Both rear pivots are now connected by the wheel's axle, as opposed to being independent. The result is a rear swingarm with minimal lateral flex, but greatly improved suspension performance.

E2 Headtube increases steering precision. Tapered 1-1/8" to 1-1/2" headtube increases stiffness for precise handling. It allows for a massive downtube/headtube junction which increases overall frame stiffness, power transfer and frame strength.

• 15mm thru axle increases steering precision
• Greatly reduces torsional deflection and increases steering precision

At last, a bike for tall riders. The Superfly 100 comes in 5 sizes including the XXL (23") size. Finally, taller riders can enjoy the benefits of a properly fitting bike.

Integrated BB cups for pedaling power transfer. A stiffer BB area for greater pedaling efficiency and output. Reduces weight – no traditional BB cups or threaded aluminum inserts. Huge downtube/bottom bracket cross section for greater frame strength and stiffness.