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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.
A usual complaint from new riders trying to get into the cycling groove is feeling uncomfortably perched forward with too much weight on their wrists and having to crank their necks backwards just to be able to see in traffic. We specifically design our Explorers to remedy this. With extra long head tubes to push handlebar height up, shorter top tubes to pull handlebars closer to the saddle, 4-inch rise handlebars that sweep back at a natural hand-grasp angle and long-quilled or angle-adjustable stems that allow for a wide range of adjustment to tune handle bar height and reach perfectly for each rider.
Every Explorer offers telesoping coil-spring suspension in the fork as well as in the seat pillar. The advantage is not just a more comfortable ride, but a ride that is much easier to control and is therefore safer.
Our super plush saddle features memory foam padding (Explorer 2) or extra high quality polyurethane padding (Explorer 1) for optimum support with maximum comfort. The slip-resistant suede-type top prevents sliding and the burnished side panels reduce leg friction while pedaling. Elastomer springs also help to soak up road vibrations. Offered in gender specific sizes.
Our Explorer tires have been designed to roll smoothly on pavement, but offer a large 1.95” footprint so that rides on park paths can be managed securely. The additional benefit of that big footprint is larger air volume in the tire and tube, which results in lower air pressure for a more comfortable ride than tires with smaller volumes and higher air pressures.
But don’t let all this comfort talk fool you into thinking the Explorer has limited uses. While conceived to make cycling as comfortably fun as possible, the Explorer is capable of doing much more than keeping a new rider from hurting. Thanks to the full-range gearing of the drivetrain, the 2” foot-print of the tires and the shock absorption of the suspension fork.
Many folks find throttle-style shifters much simpler to use than those that operate by thumb. There’s something intuitive about simply twsiting the inboard side of your handlebar grips to change the speed at which your pedaling. Which why our Explorers feature Grip Shift from SRAM or Revoshift from Shimano twist shifters.
UPGRADES FROM EXPLORER 1
Lightweight aluminum frame
RST Capa-T suspension fork
Shimano 24-speed Revoshift twist-shifting drivetrain
Alex DC25 double-walled rims
Memory foam saddle
Sealed cartridge BB
UPGRADES / CHANGES FROM 2016
Shimano FC-TY701 crankset
Shimano HG20, 8-speed cassette
Shimano RS45, 3x8 shifters
|Frame||6061 TIG-welded aluminum, all-new sport comfort design with low-standover/upright ride position, replaceable derailleur hanger, center-mount kickstand bracket|
|Fork||RST Capa-T coil-spring suspension with external preload, alloy crown, CP stanchions, mini-boots, 80mm travel|
|Headset||Internal cup, threaded, 1 1/8”|
|Wheels||Alex DC-25 double-wall alloy rims, 32H, KT Quando alloy hubs with QR, 14g stainless steel spokes|
|Tires||Jamis Sport Comfort, 26 x 1.95”, with puncture-resistant casing|
|Derailleurs||Shimano Altus M310 rear, Shimano TY710 31.8mm top swing/dual pull front|
|Shiftlevers||Shimano RevoShift RS-45, 24-speed|
|Cassette||Shimano HG20, 8-speed, 12-32|
|Crankset||Shimano TY701 alloy crank with 48/38/28 chainrings, 170mm crank length, with chainguard|
|BB Set||Sealed cartridge, 68 x 110.5mm|
|Pedals||Comfort platform with TPE non-slip insert|
|Brakeset||Tektro forged alloy direct pull brakes with Tektro CL530 alloy comfort levers|
|Handlebar||Hi-rise comfort, 15D sweep x 80mm rise x 640mm wide|
|Stem||Jamis alloy, angle-adjustable, 90mm ext x 150mm quill (13.5–17.5”) or 110mm ext x 180mm quill (18–21”)|
|Seat Post||Suspension, alloy micro-adjust, 350mm x 27.2mm, with alloy QR clamp|
|Saddle||Jamis Comfort with memory foam, synthetic suede top, burnished side panels and bumper springs|
|Sizes||M: S (13”), M (15)”, L (18”), XL (21”) S/T: S (14”), M (17”)|
|Color||M: Radiant Blue or Silver Mist S/T: Silver Mist or Radiant Teal|
|SIZE||TOP EFFECTIVE||HEAD ANGLE||SEAT ANGLE||CHAIN STAY||WHEEL BASE||FORK RAKE||BB HEIGHT||HEAD TUBE||STANDOVER|
|S||21.06 / 535||68.39˚||70.39˚||16.73 / 425||40.00 / 1016||1.65 / 42||12.09 / 307||4.72 / 120||27.01 / 686|
|M||21.65 / 550||68.40˚||70.40˚||16.73 / 425||40.63 / 1032||1.65 / 42||12.09 / 307||5.51 / 140||28.62 / 727|
|L||22.64 / 575||68.42˚||70.42˚||16.73 / 425||41.65 / 1058||1.65 / 42||12.09 / 307||6.89 / 175||30.59 / 777|
|XL||23.43 / 595||68.44˚||70.44˚||16.73 / 425||42.48 / 1079||1.65 / 42||12.09 / 307||8.27 / 210||32.91 / 836|
FIT & SIZING