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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.
The Durango frame features a sloping top tube that optimizes stand-over clearance while adding great looks at the same time. The over-sized down tube and head tube to offer plenty of strength, stiffness and fork crown clearance.
The aluminum frame on the Durango is beefed up to include a larger 34.9mm seat tube, which allows us to spec an over-sized 31.6mm seat post. The larger diameter post flexes less, providing a firmer pedaling platform.
Fully integrated shifting systems offer the most precise and reliable performance. That’s why all of our Durango models feature Shimano shifters, front and rear derailleurs, cassettes and cranksets.
Durangos feature a Zero Stack internal headset that places both the cups and bearings inside the head tube instead of outside. This reduces the total stack height (including the head tube), which is especially beneficial on big wheeled bikes. The larger diameter head tube also provides a larger weld interface at the critical head/top/down tube junction.
Running the cables up under the top tube keeps cables and housing out of the muck for more precise and reliable shifting performance.
Every Durango offers two water bottle mounts located inside the main frame. This provides excellent hydration capacity in an easily accessible position.
Because it’s much easier and much less expensive to replace a derailleur hanger than it is to repair or replace a frame, every Durango frame offers a replaceable derailleur hanger designed to yield in a crash before the frame does.
UPGRADES FROM DURANGO SPORT
• RST Blaze with TNT lockout
• Tektro hydraulic brakeset
• Shimano TY-501 crankset
• Shimano Acera RD and M310 shifters
UPGRADES / CHANGES FROM 2016
• Updated frame design!
• Tektro M285 hydraulic brakeset
• CST Patrol 2.25" tires
|Frame||6061 aluminum main tubes, over-sized seat tube, zero-stack head tube, over-sized stays, replaceable derailleur hanger|
|Fork||RST Blaze TNL 29", coil spring with Turn-n-Lock hydraulic lock out, external preload adjustor, 30mm stanchions, aluminum lowers, 100mm travel|
|Headset||Zero-stack internal cup threadless, 15mm cone spacer|
|Wheels||Alex TD26 29" rims, 32H, alloy 6-bolt disc hubs, stainless spokes|
|Tires||CST Patrol, 29 x 2.25”|
|Derailleurs||Shimano Acera rear and M190 front|
|Shift levers||Shimano M310, 3x8-speed|
|Chain||KMC Z7, 8-speed|
|Cassette||Shimano HG20, 8-speed, 12-32T|
|Crankset||Shimano TY501, 42/34/24T, 170mm (15") 175mm (17"-21")|
|BB Set||Sealed cartridge|
|Pedals||ATB platform, hi-impact resin|
|Brakeset||Tektro M285 hydraulic disc, 160mm rotors|
|Handlebar||Jamis XC flat, 31.8 x 700mm|
|Stem||Jamis XC alloy threadless, 31.8 x 10˚ rise x 70mm (15”), 70mm (17), 90mm (19"), 90mm (21")|
|Seat Post||Jamis alloy micro-adjust, 31.6 x 400mm|
|Saddle||Jamis ATB Sport, SL cover, protective front and rear guards|
|Sizes||15”, 17”, 19”, 21”|
|SIZE||TOP EFFECTIVE||HEAD ANGLE||SEAT ANGLE||CHAIN STAY||WHEEL BASE||BB DROP||HEAD TUBE||STANDOVER|
|15||22.6 / 575||71˚||73˚||17.7 / 450||42.3 / 1074||2.2 / 57||4.1 / 105||30.2 / 767|
|17||23.6 / 600||71˚||72.5˚||17.7 / 450||43.0 / 1093||2.2 / 57||4.3 / 110||30.9 / 785|
|19||24.4 / 620||70˚||72˚||17.7 / 450||44.0 / 1118||2.2 / 57||4.3 / 110||32.2 / 818|
|21||25.2 / 640||70˚||72˚||17.7 / 450||44.8 / 1139||2.2 / 57||4.7 / 120||33.1 / 842|
FIT & SIZING
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