Ripley / Shimano XT Complete Mountain Bike - 2014
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If Ibis was to blindly follow industry trends, we'd have half-decade old Ripley's on the dirt. But, those bikes would have been lost in the extended list of long-wheelbase, four-inch-travel, full-suspension 29ers that are already crowding the bandwagon. Instead, Ibis stuck to its goal of eliminating the yawn-inducing handling and overly-stable traits that haunt full-suspension 29ers. Not surprisingly, Ibis was successful, and we now have the lively, 120mm-travel Ripley complete mountain bike with a Shimano XT build kit.
Scot Nicol's engineers set their sights on applying the advantages of larger wheels to a playful trail bike. To do that, they'd need a lightweight and nimble chassis that took advantage of all modern standards. With monocoque carbon fiber already mastered, the lightweight-chassis box was an easy one to check. But, in order to achieve nimbleness -- a mystical trait lost to wheelbase-stretching linkages and front derailleur placement -- the team had to push boundaries.
So, they enlisted the help of a suspension specialist that goes by the name of Dave Weagle. Yes, the same Dave that brought DW-Link magic to the Mojo. This time around, though, suspension linkages were the focus of scrutiny, as they are a main contributor to elongated chainstays. Mr. DW had his work cut out for him if he was going to retain the lauded characteristics of his original design in a compact package. What he came up with is a twin-eccentric system, that's optimized for 32-34t front chainrings. It provides the same anti-squat pedaling efficiency and active motion that initially crowned Weagle as the suspension guru.
It's no secret that the Ripley is overdue, and one cause of that extended development period was due to fine-tuning the eccentric bearing system. In fact, Ibis concurrently designed two systems -- one exploring long-life, lightweight, and adjustable bushings, while the other used proven, but heavier, angular contact bearings. In the end, steel balls triumphed over the bushings, and Ibis focused on refining the interface to reduce weight and complexity. The result is a durable system that uses standard bearings for serviceability. It's simple to disassemble and reassemble, with only a minute weight penalty. And while this is the first 29er Ibis, and the first to receive an eccentric suspension design, those aren't the only Ibis-firsts for the Ripley. Its carbon structure is also the first Ibis to use a micro balloon foam core.
Forming monocoque carbon fiber structures without voids requires molds, both internal and external. And like the Mojo SL-R, the Ripley uses an internal bladder in order to create a smooth, joint-free layup. But, in tighter areas, where complex shapes are required, it's impossible to use bladders. This was the case for the Ripley's swingarm uprights and clevis (the component connecting the swing arm to the shock). To solve this problem, most manufacturers will use either foam or aluminum for the structure that the carbon is laid over. This adds significant weight to a frame, and extra weight was not within the Ripley's design parameters. Ibis' solution to this problem, the micro-balloon or microsphere core, not only added strength and rigidity to the Ripley, but it also tipped the scale to half what traditional foam cores would. This undoubtedly contributed to the Ripley's feathery five-pound weight, but, as stated before, Ibis also wanted a nimble 29er. And while DW's eccentric design opened up the door to this goal, geometry would be an essential part to the Ripley's objective.
Ibis set out to produce a bike that handled how it felt a 29er should handle by placing riders on multiple bikes with Anglesets. Afterwards, trail options were explored. Not 'trail' in the sense of singletrack, but 'trail' as in the relationship of steering axis, offset, and tire contact patch. It's a measurement used frequently within competitive suspension design in motorsports, but has seen little publicity among mountain bikes. After quantifying the independent observations of the riders, Ibis found that the Ripley rode best with the 70 degree angle from 120mm travel forks with a longer rake. Unfortunately, though, that was a competitor's exclusive during development. Luckily, due to the Ripley's extended time in the incubator, the exclusivity recently ended, and now the FOX Racing Shox 32 FLOAT 120 G2 CTD found on this Ripley gives it the handling characteristics collectively preferred by Ibis' pro riders.
With the Ripley right, Shimano XT components step in to complete the quintessential trail bike. This includes the front and rear derailleurs, shifters, and brakes. For the crank, Ibis went with an e.13 with 24/34t chainrings. The Ripley rolls on Stan's NoTubes ZTR Arch wheels with Specialized Ground Control and Fast Trak tires. Finishing the build are Ibis-branded Lo-fi carbon bars, alloy stem, seatpost, and saddle.
The Ibis Ripley Shimano XT Complete Mountain Bike is available in four sizes from Small to X-Large and in the colors Blue and Matte Black.
Details
- Carbon fiber frame
- Fox FLOAT CTD Adjust Kashima rear shock
- Fox FLOAT 32 CTD G2 fork
- Shimano Deore XT shifters and derailleurs
- Stan's ZTR Arch EX wheels
- Specialized Ground Control 2BR front and Fast Trak 2BT rear tires
- Ibis Lo-Fi Carbon handlebars
- Ibis stem, saddle, and seatpost
- Item #IBS0034
- Frame Material
- carbon fiber
- Suspension
- DW Link
- Rear Shock
- FOX FLOAT CTD Adjust Kashima
- Rear Travel
- 120 mm
- Fork
- FOX FLOAT 32 CTD G2
- Front Travel
- 120 mm
- Headset
- 1.125 - 1.5 Cane Creek 40 series
- Shifters
- Shimano Deore XT
- Front Derailleur
- Shimano Deore XT
- Rear Derailleur
- Shimano Deore XT Shadow+
- Crankset
- 24/34 t e.thirteen TRS+
- Bottom Bracket
- e.thirteen
- Crank Arm Length
- 175 mm
- Cassette
- 11-36 t Shimano XT
- Chain
- Shimano
- Rotors
- [front] 180 mm Shimano Ice Tech, [rear] 160 mm Shimano Ice Tech
- Handlebar
- Ibis Lo-Fi Carbon
- Handlebar Width
- 740 mm
- Stem
- Ibis 3D
- Saddle
- Ibis
- Seatpost
- Ibis
- Seat Collar
- Ibis
- Wheelset
- Stan's ZTR Arch EX
- Tires
- [front] Specialized Ground Control 2BR, [rear] Specialized Fast Trak 2BR
- Tire Size
- [front] 29 x 2.1 in, [rear] 29 x 2.0 in
- Pedals
- not included
- Recommended Use
- all mountain, trail
- Manufacturer Warranty
- 3 years limited on frame
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