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Back when we started building our first bikes in the late 70’s, steel was the only way to go. Fast forward 35 years and steel is no longer the industry’s dominant frame material, but we still love to work with it and ride it. Why? Hit a baseball with a wooden bat then with an aluminum bat and you’ll know why. You want your frame material to soak up streets and trails, not beat you with them. Not to mention the stuff is durable, can handle nicks and dents and gouges without cause for alarm, and is easily repairable. We like the look of those straight, skinny tubes, too.
Reynolds pioneered the techniques of making butted tubing around the turn of the century, and their 531 manganese-molybdenum tubing was the standard of excellence for many decades. In 1995, Reynolds introduced 853 (and a non-heat-treated version, 631, two years later); the world’s first commercial air-hardening steel for bicycle frames and Jamis was one of the first brands to use it in 1997. Welding steel often results in a 40% strength loss, requiring thick tubing walls as an offset. Not so with 853 and 631. This material actually gets stronger at the weld zones, allowing Reynolds to draw the tubing thinner for a lighter, stronger frame.
Though the high performance and buttery-smooth ride qualities of Reynolds 853 and 631 usually grab all the headlines, our frame building is equally over the top. All tubing is cleaned before being cut, jigged and welded. All tubing cuts are de-burred and buffed before welding. We use heat sinks in the head and seat tubes to control distortion. And our low-angle welding tracks form precisely arced, low-profile TIG beads while dispersing welding heat more widely, yielding a frame that requires less post-welding alignment. Add investment cast or water-jet cut dropouts for great looks and extra strength and you’ve got a labor of love that rides like a dream.
The benefits of a properly fitted bike have been recognized for years. It is essential for injury prevention and maximized efficiency. And it is the primary determinant in assuring the greatest comfort and enjoyment while riding.
Our first road bikes introduced in 1988, the Quest and Axis (for Jamis history buffs, this later became the Eclipse), were designed in consultation with Bill Farrell, inventor of the first bike-sizing tool, the Fit Kit. Back then, bike companies generally plotted a single geometry on all frame sizes: the blow ‘em up or shrink ‘em down solution – lazy, cheap and thankfully long ago obsolete. We learned from Bill early on how to tune our frame geometries and specify component sizing to account for the multiple variables needed for a proper fit for every frame size. We’ve been honing our fits for every bike, every year, ever since.
But fit is a two-dimensional calculation. Stack and reach. How tall, how long, for me? It’s in the third dimension – the SST dimension-- that Jamis continues to make a difference for you.
Slight changes in tube diameter have a significant impact upon performance. As diameter increases, strength and stiffness increase along the length of the tube as well. Whether in aluminum, steel or carbon fiber, we vary the cross-section and sometimes even wall thicknesses to fine-tune the performance and comfort characteristics of each frame size.
SST -- Size Specific Tubing-- optimizes ride quality and assures the lightest possible weight for each frame size. By varying the diameters of the tubing in the main frames of each of our frame sizes (and sometimes even in the seatstays) by 10 – 20%, we can produce a bike that not only fits like a glove and handles precisely, but accelerates and climbs explosively and offers justright compliance for every rider, every frame size.
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.
Proper fit on a bike is critical for maximum performance and comfort. Which is why micro-adjustment of fore/aft saddle position as well as seat post/saddle height has been around for years. But this hasn’t been the case for threadless steering systems. Lifting or lowering steering height has always required removal of the stem to allow for the addition or removal of spacers. This is neither a simple, nor a “micro” adjustment procedure.
The patented ATS (Adjustable Threadless System) technology resolves this by replacing the standard stem/spacer system with a slotted and ribbed shim that compresses and preloads the headset. With the headset preloaded by this shim instead of a stem, the stem can be mounted anywhere along the ATS shim. Stem height can now be quickly adjusted to within a millimeter by simply loosening one bolt without ever loosening the headset!
With saddle position and stem height fine-tuned to your optimal position, riding will be more efficient, more comfortable and more enjoyable.
Reynolds pioneered the techniques of making butted tubing around the turn of the century, and their 531 manganese-molybdenum alloy tubing was the standard of excellence for many decades. The Aurora Elite features a new generation of Reynolds steel: 631 seamless, air-hardened/cold-worked chrome-moly frame tubes. On the Aurora, it’s Reynolds 520 double-butted cro-mo.
The clever and patented ATS steering system allows you to quickly and easily adjust your stem height. Feeling a little tight in the back after the first few days of your long-distance tour? Pull that stem height up for some relief. Then drop it back down when that back loosens up.
Water jet cutting forms the elegant dropout of the Aurora Elite. Why? Using ultra-high pressure jets of water mixed with abrasives to cut the dropouts doesn’t interfere with the steel’s inherent structure, as there is no “heat-affected zone” from the cutting. The result? Great looks and a stronger frame.
A powerful braking system is a must for fully loaded touring or commuting in traffic. The Aurora Elite delivers with TRP HYRD hydraulic disc brakes that work powerfully rain or shine. While the Aurora offers the always reliable and light Tektro 992 cantilevers.
Longer, full-coverage alloy fenders with a front radius of 140° and a rear radius of 200° are designed to fully protect both rider and bike from rainwater sloughing off spinning wheels. The full-coverage design, complete with mud flaps, have a consistent inside fender radius and rolled edges to keep water inside the fender, and off your feet and drivetrain.
Check out the full complement of braze-on’s: Fenders? Check, Rear Carrier? Check, Lowriders? Yup.... the Aurora series has it all covered.
When you’ve finally set out on that life-changing journey, nothing can change your life faster than having your integrated shift/brake levers fail miles from civilization. Bar-end shifters are more resistant to damage than STI shifters because they’re mechanically simpler and you can turn off the indexing in the event of a bent hanger or dropout that prevents the shift indexing from working properly. Another advantage: you are less prone to numbness in the hands because you move them about more, unlike with STI’s where there’s more of a tendency to ride for long periods of time on the lever hoods.
The Aurora Elite’s Clement X Plor USH 35mm adventure tires are designed with a combination of firm center ridge and diamond-shaped side knobs that provides low rolling resistance and optimal on/off road-holding capabilities even with the additional weight of loaded touring. The Vittoria Randonneur tires on the Aurora features an Aquaflow tread pattern for secure riding in conditions wet or dry and Double Shielding puncture protection for long tube and tire life.
UPGRADES FROM AURORA
• TRP HYRD cable actuated hydraulic disc brakes
• Shimano 105 30-speed group
• Shimano FC-5703 50/39/30T crankset with external BB-RS5000
• Shimano R505 Center Lock disc brake hubs
• Mavic XM 119 double wall rims with DT Champion spokes
• Clement X Plor USH, 700 x 35c, 60tpi Tires
|Frame||Reynolds 631 seamless air-hardened chromoly main tubes with SST tubing diameters, double-tapered heat-treated cromo stays with clearance for 35mm tires and fenders, extended head tube with reinforced collars, custom laser cut road disc dropouts, fender/rack eyelets and 3 spoke carrier.|
|Fork||Lugged semi-sloping chromoly 17mm lower blades with low-rider braze-ons, disc brake tab, forged dropouts and fender mount eyelets with clearance for 35mm tires and fenders|
|Headset||Ritchey Logic V2 threadless, 1 1/8”|
|Wheels||Mavic XM 119 double wall rims, 36H, Shimano R505 Center Lock disc hubs and DT Champion 14g stainless steel spokes|
|Tires||Clement X Plor USH, 700 x 35c, 60tpi, protection belt with reflective sidewalls and Kevlar folding bead|
|Derailleurs||Shimano 105 RD-5701GS rear and Shimano 105 FD-5703 front with 28.6mm alloy clamp|
|Shiftlevers||Dura Ace bar-end, 30-speed|
|Cassette||Shimano 10-speed, 11-32T|
|Crankset||Shimano FC-5703, 50/39/30T, 170mm (47/50), 172.5mm (53/55), 175mm (57/59/62)|
|BB Set||Shimano BB-RS500 external|
|Brakeset||TRP HYRD cable actuated hydraulic disc brakes with Shimano 160mm rotors and Tektro RL340 road brake levers|
|Handlebar||Jamis Ergo, 6061 aluminum, 31.8 x 380mm (47), 400mm (50/53), 420mm (55), 440mm (57/59/62)|
|Stem||Jamis adjustable threadless system (ATS), 3D cold forged aluminum, 7˚ x 90mm (47/50), 100mm (53/55), 120mm (57/59/62), ATS shim length 100mm|
|Tape||Jamis natural cork bar tape|
|Seat Post||Jamis alloy micro-adjust, 27.2 x 300mm with cromo seat pin|
|Saddle||Jamis Touring Sport with pressure relief cut-out and hollow chromoly rails|
|Accessories||Full coverage 45mm fenders with adjustable stays and designed mud flaps, Jamis carrier (capacity 25kg/55lbs.) with Jamis logo strap and rear reflector|
|Sizes||47, 50, 53, 55, 57, 59, 62cm|
|SIZE||TOP EFFECTIVE||HEAD ANGLE||SEAT ANGLE||CHAIN STAY||WHEEL BASE||FORK RAKE||BB DROP||HEAD TUBE||STANDOVER||STACK||REACH|
|47||20.43 / 519||70˚||74˚||17.32 / 440||40.31 / 1024||1.97 / 50||2.56 / 65||3.94 / 100||28.58 / 726||20.39 / 518||14.61 / 371|
|50||21.26 / 540||71.5˚||74˚||17.32 / 440||40.63 / 1032||1.97 / 50||2.56 / 65||4.53 / 115||31.34 / 796||21.18 / 538||15.20 / 386|
|53||21.69 / 551||71.5˚||73˚||17.32 / 440||40.67 / 1033||1.97 / 50||2.56 / 65||5.32 / 135||31.89 / 810||21.93 / 557||15.00 / 381|
|55||22.09 / 561||71.5˚||73˚||17.32 / 440||41.10 / 1044||1.97 / 50||2.56 / 65||5.91 / 150||32.52 / 826||22.48 / 571||15.20 / 386|
|57||22.64 / 575||71.5˚||72˚||17.32 / 440||41.22 / 1047||1.97 / 50||2.56 / 65||6.50 / 165||33.11 / 841||23.03 / 585||15.16 / 385|
|59||22.99 / 584||72˚||72˚||17.32 / 440||41.38 / 1051||1.97 / 50||2.56 / 65||7.09 / 180||33.82 / 859||23.70 / 602||15.31 / 389|
|62||23.35 / 593||72.5˚||72˚||17.32 / 440||41.54 / 1055||1.97 / 50||2.56 / 65||7.67 / 195||34.68 / 881||24.33 / 618||15.47 / 393|
FIT & SIZING
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