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All our frames and forks are tested continually to meet or exceed (in some cases, well exceed) EN standards 14764, 14765, 14766 and 14781 as well as the new ISO 4210 standards. We conduct these tests at our frame manufacturing facilities, but we also use EN accredited testing laboratories such as Intertek and SGS to verify the results of our own tests. If these tests aren’t telling us everything we want to know about our bikes, we increase the loads and cycles, or we determine another way to test. Where current hydraulic testing machines, jigs and hardware aren’t up to the task of emulating some of the forces and impacts our bikes might be subject to, we’ve designed our own.
We relentlessly cycle test for fatigue from pedaling and torsional forces on every single frame size, with deflection tests for stiffness at every point of the frame. Brutal impact tests with massive weights dropped on fixed frames or forks are performed. Then reversed, with weights attached to the frame, the frame hoisted to a given height depending upon product type, then released.
This destructive testing is enormously instructive and important. And it is in continual process. But it’s our ongoing non-destructive testing of frames and forks fresh off the factory floor that’s just as vital.
For our carbon fiber frames, EVERY frame is weighed to make sure it’s neither resin rich nor resin deficient. We also measure the stiffness of each frame in 6 critical areas as a check on lay-up production. Each deflection test must fall within 5% of the standards our machine and field-testing have established. This weighing and stiffness deflection testing guarantees every single frame we produce meets all Jamis manufacturing protocol and will
deliver the ride qualities we defined and demand.
Every Commuter offers longer, full-coverage aluminum fenders, complete with mud flaps. The consistent inside fender radius and rolled edges keeps the water inside the fender and off your feet and drivetrain. Every Commuter fender offers adjustable stays, so changing the size of your tires is never an issue.
Every Commuter offers a smartly redesigned alloy handlebar that sweeps forward then back stylishly for a perfectly comfortable heads-up riding position.
A quilled stem may seem old school, but the traditional design is both simple and versatile. And on our Commuters, it looks great too. Loosening one Allen screw allows stem and handlebar height to be easily adjusted without effecting headset preload. Pull it up on Monday morning for see-in-traffic commutes, then lower it for faster, fitness rides on the weekend.
We’ve designed our rear carriers specifically for use on all our Commuter models and painted them to match the frame and forks. All models include a Jamis securing strap.
Our Jamis Metro Sport saddle offers just the right combination of width, shape and padding for riding comfortably and efficiently. Offered in gender specific sizing.
The CST Corporal tire features a single compound rubber and grooved tread, so it not only rolls quickly on the street, but also maintains control in gravel and disperses water in wet conditions. The casing is reinforced for extra flat protection and offers a reflective sidewall stripe to increase visibility in the dark.
|Frame||Hi-Tensile steel frame, new sloping design, kickstand mounts, forged dropouts and fender/rack eyelets|
|Fork||Jamis City/Cross hi-tensile steel unicrown, straight blades with low rider mounts and double fender eyelets|
|Headset||Water-resistant sealed mechanism, threaded, 1 1/8”|
|Wheels||Alex ID-19 double wall alloy rims with GSW sidewall, 32H, alloy hubs with QR and 14g stainless steel spokes|
|Tires||CST Corporal with puncture protection and silver safety stripe, 700 x 32c|
|Derailleurs||Shimano Altus, RD-M310 rear|
|Shiftlevers||Shimano RevoShift SL-RS35, 7-speed|
|Cassette||Shimano MF-TZ31 7-speed, 14-34T|
|Crankset||Forged alloy crank, single 44T chainring, 170mm, with full length chainguard|
|BB Set||FSA sealed cartridge, 68 x 122.5mm|
|Pedals||Comfort platform with TPE non-slip insert|
|Brakeset||Forged alloy linear-pull brakes with Tektro CL530 ergonomic design alloy brake lever with kraton insert|
|Handlebar||Jamis ARC, 6061 aluminum, 25.4 x 35˚ sweep x 580mm (F 14", 18") 600mm (M 15”, 17”, 19”, 21”, 23”)|
|Stem||Jamis alloy hi-rise, quill type, 35˚ x 90mm with 180mm quill|
|Grips||Anatomic double density kraton with reflective end plug|
|Seat Post||Jamis alloy micro-adjust, 25.4 x 350mm with alloy clamp and QR seatpinin|
|Saddle||Jamis Metro Sport with synthetic suede cover, burnished sides, gender specific|
|Accessories||Full coverage 45mm fenders with adjustable stays & mud flaps, new designed Jamis carrier (capacity 18kg/40lbs.) with Jamis logo strap & rear reflector, micro bell and kickstand|
|Sizes||15”, 17”, 19”, 21”, 23”|
|Color||Ink or Pewter|
|SIZE||TOP EFFECTIVE||HEAD ANGLE||SEAT ANGLE||CHAIN STAY||WHEEL BASE||FORK RAKE||BB DROP||HEAD TUBE||STANDOVER||STACK||REACH|
|15||21.53 / 547||70˚||73.5˚||17.52 / 445||41.50 / 1054||2.01 / 51||2.75 / 70||5.51 / 140||27.48 / 698||22.56 / 573||14.92 / 379|
|17||22.12 / 562||70.5˚||73.5˚||17.52 / 445||41.93 / 1065||2.01 / 51||2.75 / 70||6.30 / 160||28.98 / 736||23.38 / 594||15.27 / 388|
|19||22.48 / 571||71˚||73.5˚||17.52 / 445||42.09 / 1069||2.01 / 51||2.75 / 70||6.89 / 175||30.31 / 770||23.98 / 609||15.43 / 392|
|21||23.03 / 585||71˚||73˚||17.52 / 445||42.24 / 1073||2.01 / 51||2.75 / 70||7.87 / 200||31.77 / 807||25.00 / 635||15.47 / 393|
|23||23.42 / 595||71.5˚||73˚||17.52 / 445||42.68 / 1084||2.01 / 51||2.75 / 70||9.25 / 235||33.23 / 844||26.30 / 668||15.43 / 392|
FIT & SIZING
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