TAKING IT TO THE LIMIT
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.
earth cruiser 1
Many cruisers weigh well north of 40 pounds. Not so with the Earth Cruiser. Because nothing gets more uncomfortable faster than having to pedal more weight than necessary, we’ve pared as many grams from the Earth Cruiser as we could. Starting with the lightweight aluminum frame and a parts pick that’s nearly all lightweight alloy parts. The result is a 29 pound Earth Cruiser 1 that’s pure joy to pedal.
Looks Great Today & Tomorrow
Many of the parts specified on our Earth Cruisers are made of aluminum to save weight, but also to help preserve the finish of the bike. Aluminum parts include the seat post, seat clamp, stem, rims, front hub, kickstand and crank arms (EC3 and EC1). We’ve even specified a silver-plated chain on the EC3 and EC1 that doesn’t just look great, it’s way more rust-resistant than standard carbon steel chains.
Our cruise-control handlebars were designed to promote a comfortable no-weight-on-the-wrists riding position. With just the right sweep and rise, these handlebars meet the rider’s hands without requiring a forward bend at the waist, relieving pressure on the back of the neck. Handlebar width has also been carefully calculated so that when steered from left to right it does not contact the rider, unlike many other cruiser-style handlebars.
Memory Foam Saddle
Our Earth Cruiser saddles are not just great looking, they’re extraordinarily comfortable as well. Though the size and shape is clearly generous, we’ve also molded a channel into the top of the saddle to relieve sitting pressure and use high-quality memory or polyurethane foam for the supporting mattress. Memory foam (on the EC1 and 3), was originally developed by NASA and is now used extensively for medical applications. It is much denser than the foams ordinarily used in saddles, which makes it more supportive and more comfortable.
Smooth Rolling Tires
Our comfort tires have been designed to roll smoothly on pavement, but offer a large 2.125” 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.
Our Earth Cruisers pedals offer a thermoplastic elastomer insert on both sides of the pedal surface that keeps shoes and sandals from slipping when soles or pedals get wet. These inserts also make barefoot pedaling comfortable.
UPGRADES FROM EARTH CRUISER 2
• Lightweight aluminum frame
• Full alloy crankset: lightweight and rust-proof
• Memory foam saddle
TOP FIVE THINGS YOU NEED TO KNOW
The Earth Cruiser saddle is similar to the one we use on our Jamis Explorer sport comfort bikes — with extra padding and memory foam for optimum support with maximum comfort. Offered in gender specific shape and sizing for each of our Men’s and Women’s models.
The slip-resistant suede-type top prevents sliding and the burnished side panels reduce leg friction while pedaling. Elastomer springs help soak up high resonant road vibrations.
The rubber-like inserts on the pedals are actually slip-resistant, offering some shock-absorption as well, for a safer, more secure ride. You can even ride barefoot comfortably!
Alex’s Zuma alloy rims are reliably true & durable and are laced on the Earth Cruiser with 36 stainless steel spokes producing a strong, rust-resistant wheel.
Our Jamis Cruiser bar is the most sensibly designed in the business — just the right width, sweep & rise, for a perfectly comfortable upright ride that won’t accidentally knock you in the ribs during tight radius, slow speed turns like in a driveway or parking lot
|Frame||Contemporary comfort design with 6061 aluminum oversized tubing, includes kickstand and painted steel chainguard|
|Fork||Hi-tensile unicrown with straight blades|
|Headset||Sealed, threaded, 1 1/8”|
|Wheels||Alex Zuma 36H black anodized alloy rims with alloy nutted front hub and Hi-Stop CB rear, 14 gauge stainless steel spokes|
|Tires||Jamis Cruise-control comfort tread 26×2.125” silver stripe|
|Crankset||Forged alloy crank, 170mm, with 44T compact disc chainring|
|BB Set||Cotterless bolt type, 3PB axle, 68 x 119mm|
|Pedals||Cruiser alloy platform with TPE comfort insert|
|Brakeset||Hi-Stop coaster brake|
|Handlebar||Jamis Cruise-control comfort bar|
|Stem||Alloy hi-rise, 180mm quill, 100mm extension, with removeable 2-bolt cap|
|Seat Post||Alloy micro-adjust, 27.2 (M) & 26.8 (W) x 300mm, with 31.8mm alloy clamp and cromo seatpin|
|Saddle||Earth Cruiser Comfort with memory foam padding, synthetic suede top, burnished sides and bumper springs|
|Sizes||M: M (18”) & L (21”) F: S (15”) & M (17”)|
|Color||M: Gloss Black, Cayenne, Cosmo Blue S/T: Spearmint, Twilight, Cosmo Blue|
|SIZE||TOP EFFECTIVE||HEAD ANGLE||SEAT ANGLE||CHAIN STAY||WHEEL BASE||FORK RAKE||BB HEIGHT||HEAD TUBE||STANDOVER|
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