2018 Jamis Eden Sport
2018 Jamis Eden Sport
A 27.5x3” tire measures out to a 29” diameter and a 26x3” tire measures out to a 27.5” diameter. Combining them with a 40mm rim, results in the ultimate combination of traction, roll-over and versatility without being too heavy, too bouncy, too tall or feeling lethargic on the trail.
TAPERED HEAD TUBE
Riding fast with control requires steering precision, which starts with the front of the bike. Stiffening this area results in less wheel deflection, more wheel control. A full 1.5” head tube and steerer would achieve this, but would add unnecessary weight and bulk, and limit stem choices. But a tapered 1 1 /8” to 1 1 /2” head tube serves up a significant increase in rough terrain tracking and stability without much of a weight penalty compared to standard 1 1 /8” systems.
The rear wheel tucks in with short chainstays. With a 12x148 rear hub, you’ve got a stiff and responsive rear end.
OUTBOARD CHAIN LINE
A 12x148 rear hub with 3mm offset chainrings minimizes the chance of chain to tire contact with short chainstays and “mid-fat” tires without compromising any pedaling efficiency to a wider q-factor.
WHY THRU AXLES?
Securing the rear wheel to the frame by threading a 12mm axle into the rear drop-outs is not only safer, it’s stiffer. The rear wheel tracks directly in line with the frame, for more precise handling, so you can go faster with more confidence. The increase in stiffness of a 15mm fork axle improves steering & handling significantly. It also puts less stress on the fork’s internals, improving fork durability and performance. The hub drop outs provide a self centering feature for the wheel for fast, easy installation.
FORGED BOTTOM BRACKET YOKE
A one-piece bottom bracket shell and drive-side chainstay yoke provide a strong and lightweight solution for the potential clearance issues of 3” tires and double chainrings.
Benefits of a tubeless set-up are reduced rotating weight and the ability to use lower inflation pressures for greater traction without the risk of pinch flats. WTB TCS rims feature a tubeless UST “On-Ramp” profile providing a consistent fit between the rim and the tire for easy installation and inflation.
180MM FRONT ROTORS
Bigger wheels and tires generate more rotating mass and traction once they are up to speed. So it only makes sense to use larger rotors to help control that larger wheel in the most efficient manner possible. Sure, 160mm rotors will stop the bike. But when you’re riding like every second counts, braking for the shortest time possible while keeping the bike under control is the goal. And a larger 180mm rotor up front let’s you do this.
SEAT & STEERING PLATFORM
A 35mm seat tube with 31.6mm seat post assures the stiffest possible pedaling & steering platform, with a sloping top tube for low stand-over.
Frame: Triple-butted 6061 aluminum, 1.5 - 1 1/8” tapered head tube, post mount disc brakes, 12x148mm thru-axle drop-outs, High Direct Mount (HDM) front derailleur with front-pull internal cable routing, internal dropper post routing, replaceable derailleur hanger, Formula thru-axle
Fork: RST Alpha TNL 27.5/26+, coil spring with Turn-n-Lock hydraulic lock out, 32mm stanchions, magnesium lowers, 9x110mm hub spacing,120mm travel
Headset: FSA Orbit 1.5 Zero-Stack internal cup, 8mm cone spacer
Wheels: WTB Scraper i40 TCS tubeless 26" rims, Formula 9x110 front & 12x148 sealed bearing hubs, stainless spokes
Tires: WTB Ranger, 26 x 3.0”
Derailleurs: Shimano Deore Shadow Plus rear
Shift levers: Shimano Deore, 1x10-speed
Chain: KMC X10-1, 10-speed
Cassette: Shimano HG500, 10-speed, 11-42T
Crankset: SR Suntour Zeron, 32T, 170mm (14”/16"), 175mm (18”)
BB Set: SR Suntour External
Pedals: MTB alloy platform
Brakeset: Tektro M286 hydraulic disc, 180mm front &160mm rear 6-bolt rotors
Handlebar: Race Face Ride, 685mm x 25mm rise
Stem: Race Face Ride, 60mm (14"), 70mm (16"), 80mm (18")
Grips: Dual compound
Seat Post: Race Face Ride, 31.6 x 400mm
Saddle: WTB Deva Comp
Sizes: 14”, 16”, 18”
Color: Blue Lagoon