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Last year, we made the switch to USA made Enduro Bearings in the bottom brackets on many of our high-performance level models. Why? Because they are the experts when it comes to obsessing about bearings! Enduro Bearings pioneered MAX type bearings, a design previously only used for large equipment such as forklifts and earth movers almost 20 years ago for bicycles to address the challenges associated with mountain bike pivots.
By filling the races with balls, these bearings have 35-40% more load capacity than standard radial bearings. They accomplish this with a special design where the maximum number of balls are inserted into the bearing. The race grooves are deeper on these bearings for more lateral support for the twisting and multiple forces associated with mountain bike pivots. LLU seals give maximum protection against the elements while keeping the 90% fill of Almagard Extra High Pressure Grease inside. We also specify MAX BLACK OXIDE bearings in our carbon frames which get an additional Magnetite treatment for hardness, rust resistance and even more reliability.
In addition to these BB bearings, we’ve also gone ahead and made these bearings standard on our MP4 suspension bikes. The result for you is a much more active and quick rear suspension, eliminating play and wag all at the same time. Out of the box, our DEFCON & XCT suspension bikes with Enduro’s MAX bearings will save you time and money, as they will perform well 2 or 3 times longer than off the shelf bearings.
There are a number of BB standards in the bike industry right now. Here is what you will find on our bikes, and why.
Traditional: The BSA standard. The standard forever. A steel BB spindle, 17mm in diameter, turns within a 68mm or 73 mm shell and upon sealed cartridge ball bearings that are threaded into the BB shell. Not particularly light, not especially stiff (by today’s standards), but reliably durable and definitely cost effective.
External Bearing: The BB shell is still 68mm or 73mm wide and just under 35mm in diameter, but the bearings have been moved outside the BB shell (Shimano Hollowtech II, SRAM GXP, FSA MegaExo). This allows the spindle diameter to be increased over 40% to 24mm and hollowed for a huge stiffness increase with a significant weight reduction. The larger diameter spindle does not compromise bearing size because all bearings now reside outside the frame. The spindle is also better supported with bearings nearer its ends rather than its center.
PressFit30: PressFit30 (SRAM) is a derivative of the BB30 (FSA) system. BB30 increases the spindle diameter to a whopping 30mm for the ultimate in stiffness. But because the BB shell’s inside diameter is also increased from just under 34mm to 42mm, bearing size is not compromised. The challenge with BB30 is that bearings are pressed directly into the frame, leading to durability issues if there are any frame or bearing tolerance deviations. The beauty of the PF30 system is that bearings are housed in nylon cups that are pressed into the frame’s bottom bracket shell. Bottom-line advantages of the PF30 system over BB30? Improved bearing-to-shell interface, greater bearing durability and simplified installation.
BB386EVO: The BB386 EVO bottom bracket design amplifies the benefits of the proven BB30 and PF30 system. It takes the lighter, stiffer 30mm alloy spindle from the BB30 design, incorporates press-fit bearing cups from the PF30 system and marries both to a wider 86.5mm BB shell (which is the same width as on a standard 68mm shell with external bearings). All without changing Q-factor. Why a wider shell? It allows us to increase the diameter of our seat and down tubes at the BB shell a full 30%, for increased stiffness where you really need it. We can also optimize chainstay design with an increased diameter that doesn’t crowd the rear tire.
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 Supernova and Nova Pro top tubes offer a portaging flat that is perfectly angled & positioned for comfortable carries.
If there’s any bike that can benefit from the extra power of disc brakes and eliminating the rim sidewall from braking surface duties, it’s a cyclocross bike. Just think about riding 15 - 20mph on a slippery course with half-frozen fingers and the power & modulation benefits of hydraulic disc brakes become readily apparent.
The 15mm Thru-Axle on our Supernovas and Nova Pro offers the benefits of increased stiffness and a quick release system without any downside. Designed specifically to counter-act the stress and pull of disc brake tourque, these forks won’t drift when brakes are applied.
UPGRADES/CHANGES FROM 2016
• SRAM Apex 1 1x11 group with hydraulic brakes and shifters
• SRAM PC-1110 chain
• SRAM Powerglide 11-42 cassette
• 160mm rear rotors
|Frame||6061 aluminum double-butted main frame, hydro-formed Kinesium top tube for comfortable portage, 12x142 thru axle, 1.5- 1 1/8” tapered head tube, tapered chainstays, butted seat stays, PressFit 30 BB shell, 34.9mm seat tube, replaceable derailleur hanger|
|Fork||Jamis CX carbon composite with 15mm thru-axle, FEA optimized Near Net SPV molding process, 1.5” hollow formed crown, monocoque one-piece forming technology, post disc brake mounts with integrated carbon cable cradle with stainless axle interfaces|
|Headset||Ritchey Comp Drop-In, sealed bearing with nylon upper compression ring, 1.5 - 1 1/8”|
|Wheels||Alex ATD 470 disc specific rims with TCS (Tubeless Compatible System), 32H, Formula 6-bolt alloy sealed bearing hubs, front 15mm/rear 12x142 thru-axle and 14g stainless steel spokes|
|Tires||Clement Crusade MXP, 700 x 33c, 60TPI, folding|
|Derailleurs||SRAM Apex 1 long cage rear for 34.9mm seat tube|
|Shiftlevers||SRAM Apex 1 Hydraulic Double Tap with Zero-Loss shift technology, 11-speed|
|Chain||SRAM PC-1110 with Powerlock|
|Cassette||SRAM Powerglide 1130 11-speed, 11-42T|
|Crankset||SRAM S-350-1 Xsync 40T GXP, 170mm (51), 172.5mm (54/56), 175mm (58/61)|
|BB Set||Enduro PressFit 30|
|Brakeset||SRAM Apex hydraulic brakes with G2CS 160mm front and rear rotors and SRAM Apex levers|
|Handlebar||Ritchey Comp Logic Curve, 6061 aluminum, 31.8 x 420mm (48/51), 440mm (54/56), 460mm (58/61)|
|Stem||Ritchey 4-Axis, 3D net forged 6061 alloy, 6˚ x 90mm (48/51), 100mm (54/56), 120mm (58/61)|
|Tape||Fizik Microtex Superlight Soft Touch tape|
|Seat Post||Ritchey Road, 31.6 x 300mm with Jamis 7075-AL CNC aluminum 1-bolt seat post clamp|
|Saddle||Selle Royal Seta S1 with integrated clip system|
|Sizes||48, 51, 54, 56, 58, 61cm|
|SIZE||TOP EFFECTIVE||HEAD ANGLE||SEAT ANGLE||CHAIN STAY||WHEEL BASE||FORK RAKE||BB DROP||HEAD TUBE||STANDOVER||STACK||REACH|
|48||20.27 / 515||71˚||75˚||16.73 / 425||39.33 / 999||1.89 / 48||2.71 / 69||3.94 / 100||29.53 / 750||20.83 / 529||14.57 / 370|
|51||20.86 / 530||71.5˚||74˚||16.73 / 425||39.41 / 1001||1.89 / 48||2.71 / 69||4.52 / 115||30.35 / 771||21.46 / 545||14.65 / 372|
|54||21.45 / 545||72˚||73˚||16.73 / 425||39.45 / 1002||1.89 / 48||2.71 / 69||5.12 / 130||31.22 / 793||22.09 / 561||14.69 / 373|
|56||22.05 / 560||72.5˚||73˚||16.73 / 425||39.88 / 1013||1.89 / 48||2.71 / 69||5.71 / 145||31.93 / 811||22.72 / 577||15.08 / 383|
|58||22.64 / 575||72.5˚||72.5˚||16.73 / 425||40.31 / 1024||1.89 / 48||2.64 / 67||6.30 / 160||32.56 / 827||23.23 / 590||15.28 / 388|
|61||23.42 / 595||73˚||72˚||16.73 / 425||40.67 / 1033||1.89 / 48||2.64 / 67||7.28 / 185||33.62 / 854||24.21 / 615||15.59 / 396|
FIT & SIZING
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