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Size Specific Design (SSD) is the Jamis design philosophy and technique used to create the best possible riding bike for each size rider. Rather than limiting frame size variations to just different length top, seat and head tubes lengths, we take an all-inclusive look at each frame’s total configuration. We start by plotting stack and reach--the two most critical coordinates in bike fitting. Stack is the vertical line measurement from the BB center to the (real or imaginary) horizontal TT line. Reach is the horizontal line from head tube center to the vertical BB line. The two create an inverted “L” to then build outward from.
With SSD we offer four different BB drops and three rear centers (or rear triangles) in addition to the natural variety in tube lengths as bikes move from size-to-size. This approach to frame making helps create an effective custom “ride” for each size bike. For example, consider that crank arm lengths vary as bikes get taller or shorter, yet without changing the BB drop to accommodate this, a rider sits higher or lower. This can have a very real affect on a bike’s ride characteristics and overall handling. The same rule applies to the rear center of the frame.
Just the right amount of fork offset and trail round out SSD’s geometric equation. We have two different fork offsets for each model and with the tire versatility of the Renegades we have added a third to keep steering precise no matter the tire size choice.
Our Size Specific Tubing (SST) that we pioneered back in 1988 also plays a key role in our new SSD technology. By building with a variety of frame size specific main tubes and seatstays, SST helps contribute to a highly optimized ride and assures the lightest possible weight in each case.
Though we do make bikes with frame geometry and component sizing specifically targeted for women, not every woman is best suited or fitted on such a bike. We want to be clear about that from the outset. As always, the best advice for buying a bike is to go to your LBS, where you can be properly fitted on a bike. One of our “unisex” sizes just might be the perfect fit for you (though a swap for a saddle with a wider sit-bones platform will likely be recommended). But if you discover that you are, in fact, best fitted on one of our Femme geometry bikes, of which there are many, here’s what you’ll find:
• Top tubes will be shorter; stems shorter too, with seat tube angles possibly steepened, all to reduce the distance from saddle-to-bar for a more comfortable reach.
• Head tube angles may be relaxed and fork rake increased to eliminate or minimize the potential for wheel-toe overlap,
• Bottom bracket height may be dropped so standover clearance is increased and center of gravity is lowered.
• Handlebars will often be narrower with a shorter reach to the flats and drops.
• Brakes/Shift levers will often have a shorter reach as well and cranks arms may be shorter for any given frame size in comparison to the unisex version.
• Saddles will generally be shorter and wider, often with a pressure relief zone.
• We may even alter the weight and stiffness of our frame materials to better suit a lighter-weight rider (see SST info below)
And we make all our Femme bikes in a broad sizing range – from 44cm to 54cm, or 14” to 18”, so you can be assured of finding a Jamis Femme that fits perfectly.
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.
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.
Size Specific Design (SSD) is the Jamis design philosophy and technique used to create the best possible riding bike for each size rider. Rather than limiting frame size variations to just different length top, seat and head tubes lengths, we take an all-inclusive look at each frame’s total configuration. Every SSD frame will also feature size-specific BB drop, rear center, fork offset/trail and SST technology.
For a greater range of handlebar and rider positions, we’ve fitted the Quest series frames with taller head tubes. Coupled with a slightly longer wheelbase and relaxed head tube angle, the result is more confident steering & handling and a more comfortable position for longer rides whether competitive or recreational.
Taking advantage of the high tensile strength of steel without having to worry about strength degradation due to welding is incredibly liberating. Welding steel often results in a 40% strength loss, requiring thick tubing walls as an offset. Not so with the air-hardened Reynolds 631 steel alloys used on our Quest Elite frames. This material actually gets stronger at the weld zones, allowing Reynolds to draw the tubing thinner for a lighter, stronger frame.
Reinforcing rings are brazed on the head tube to prevent the headset and fork movement from deforming the thin-walled chrome-moly head tube.
Our Quest Femme versions offer women’s specific frame sizing & geometry and component selection, including anatomically adjusted top tube lengths, head & seat tube angles, fork rakes & women’s specific saddles, with handlebar, stem and crank lengths all dimensioned to optimally fit women for greater comfort & efficiency.
Lost wax casting (aka investment casting) is an expensive process used mainly for the complicated shapes of high quality lugs and fork crowns. The dropouts of the Quest Elite are lost wax molded, as are the classically shaped seat collars of all our steel road bikes.
Manufactured by the same team that produces our Xenith Endura frames, the carbon forks on our Quest series models are formed as true monocoque forks, in one continuous unit (steerer/crown/blades) for optimal strength and performance.
UPGRADES / CHANGES FROM 2016
Redesinged SSD frame geometry
Alex AT 470 rims with TCS (Tubeless Compatible System)
Shimano HG41 8-speed, 11-32T cassette
|Frame||4130 double-butted chromoly main tubes with SSD frame geometry and SST tubing diameters, sloping top tube frame design, double-tapered cromo stays, forged dropouts and fender/rack eyelets|
|Fork||Full 4130 chromoly lugged crown, radius blades, forged dropouts with fender eyelets|
|Headset||Ritchey LB threadless, 1 1/8”|
|Wheels||Alex AT 470 rims with TCS (Tubeless Compatible System) with CNC sidewalls, 28/32H, Formula alloy hubs with QR and 14g stainless steel spokes|
|Tires||Vittoria Zaffiro, 700 x 25c|
|Derailleurs||Shimano Claris RD-2400 GS rear and Shimano Claris FD-2403 front with 28.6mm alloy clamp|
|Shift levers||Shimano Claris ST-2400 Dual Control STI, 24-speed|
|Cassette||Shimano HG41 8-speed, 11-32T|
|Crankset||Shimano Claris FC-2403, 52/42/30T, 165mm (48), 170mm (51/54)|
|BB Set||FSA sealed cartridge, 68 x 116mm|
|Pedals||Touring platform style, full alloy with toe clips|
|Brakeset||Tektro R317 long reach dual-pivot calipers with adjustable pads Shimano Claris ST-2400 STI levers|
|Handlebar||Jamis Ergo, 6061 aluminum, 31.8 x 380mm (48), 400mm (51/54)|
|Stem||Jamis Road, 3D forged 6061 alloy, 7˚ x 90mm (48/51), 100mm (54)|
|Grips||Jamis suede tape|
|Seat Post||Jamis alloy micro-adjust, 26.6 x 300mm with cromo seat pin|
|Saddle||Jamis Touring Sport Femme with pressure relief cut-out|
|Sizes||48, 51, 54|
|Color||Teal Fo’ Real|
|SIZE||TOP EFFECTIVE||HEAD ANGLE||SEAT ANGLE||CHAIN STAY||WHEEL BASE||FORK RAKE||BB DROP||HEAD TUBE||STANDOVER||STACK||REACH|
|48||19.88 / 505||71˚||75.5˚||16.34 / 415||38.86 / 987||1.97 / 50||2.79 / 71||4.72 / 120||28.86 / 733||21.12 / 537||14.38 / 365|
|51||20.47 / 520||71.5˚||75˚||16.34 / 415||39.17 / 995||1.97 / 50||2.74 / 69.5||5.63 / 143||30.12 / 765||21.92 / 557||14.57 / 370|
|54||21.30 / 541||71.5˚||74˚||16.34 / 415||39.33 / 999||1.69 / 43||2.74 / 69.5||6.38 / 162||30.83 / 783||22.75 / 578||14.75 / 375|
FIT & SIZING
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