One bike for all seasons

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Twenty years ago, modern fatbikes were a vision manifest as a few crude bikes in a few faraway garages. As I understand, at least one was in the valley at Wildfire Designs, in Mark Gronewald’s workshop in Palmer, AK; while the other was in rural New Mexico, in the garage of Ray “El Remolino” Molina. One design was born from snow and Iditasport racing, while the other from sand-crawling and desert riding. For the most complete “recollections” of fatbike history, this thread describes a lot of failed attempts and semi-successes on the path to the modern fatbike standard. Other fatbikes were being developed simultaneously in Alaska and the sand dunes of the Oregon Coast.

I met Ray Molina in the Copper Canyon last spring at the 7th Copper Canyon Ultramarathon. He was excited to meet us and talk about bikes, and was the only person in town unsurprised that we had actually ridden there. The conversation quickly diverged to his distaste for Surly bicycles, for they had “ripped off his design” (paraphrase). Lael’s Long Haul Trucker prompted the discussion, although he didn’t recognize the bike in it’s refinements and without it’s decals. I was hearing about the difficulties of manufacturing wide rims in Mexico in the 80’s and the joys of riding sand dunes on a homemade bike in Chihuahua– most of what I and was hearing was too far off to comprehend, or to believe. Not until six months later when I was inspecting the wide rims on Mike Curiak’s Iditasport snowbike displayed at Absolute Bikes in Salida, CO, did I realize that Ray was not entirely crazy– they were labeled “Remolino”. Indeed, some of his history was accurate and in fact, his 80mm rim was an essential step in offering a lightweight flotation bicycle. The tires displayed on Curiak’s bike appeared to be 3″ DH style tires, splayed by the wide rims to a respectable footprint capable of riding over loose surfaces.

Ray has been mountain biking in the Copper Canyon region for decades, and was crafting huaraches on the sidewalk in town with the Tarahumara in the days leading up to the ultramarathon. A few dozen Americans and an assortment of international runners had descended– over 5000 ft– to Urique. Ray had brought a load of premium materials to the Raramuri (Tarahumara) for the soles of their sandals from the States– worn out automobile tires. The following day Ray participated in the race wearing his custom cushioned huarache sandals, despite claiming to be “not much of a runner”. It’s a good thing it’s not much of a run, but a 50 mile hike through the desert heat and canyon terrain, with over 9000ft of climbing. Apparently, Ray thinks he can do anything, and whether it is riding a bike in sand or running 50 miles on dirt, he’ll make his own “shoes” for the task.

The viability of the modern fatbike as an all-season adventurer is becoming well known partly due to the dearth of snow in the lower 48 this winter, and through the remaining three seasons. Mostly, many fatbike owners are finding the bike too fun to let alone the rest of the year. The availability of wide doublewall rims and even wider singlewall rims– Ray’s quest– is also supporting the growing market. Production frames and complete bicycles are available from Surly, Salsa, Fatback, 9zero7, with more from Origin8 and On-One in the near future. Custom and semi-custom fatbikes are avaialble from Vicious, Moots and others, as new fat tires are rolling out from a new QBP brand 45North, with another tire due from J&B Importers. This new rubber joins the five Innova tires from Surly and the Spider from J&B, also manufactured by Innova. Beaches, abandoned railroad trails, loose-dirt ATV trails and barely-there cobbled Incan roads are some of the places fatbikes go when it’s not snowing. In my dreams a fatbike with the new smooth Black Floyd tire makes the best casual summer town and trail bike; more comfort than a Schwinn balloon tire bike and the capability to go more places than many mountain bikes. It’ll roll 15 mph on pavement as well.

But what if you don’t have time for Hope to Homer and bashing your chainring on beach boulders or grinding up and over the Andes with half-a-dozen water bottles sounds like hell? The non-offset frames available with 170mm spacing from Salsa, Fatback and 9zero7 lend themselves well to strong symmetrical wheels, and a 29er wheelset could transform a snowbike into a summer bike of a more typical breed, one that could be fit with suspension and knobby tires for trail riding, or a rigid fork and fast rolling Nanos for dirt road touring, or Schwalbe Marathon Mondial tires for mixed terrain touring with plenty of pavement, or studded tires for winter hardpack. Consider the Salsa Mukluk, designed for 4″ tires: transformations could be made to replace the need for three other Salsa models, with some mild compromises– the Fargo, the Vaya, and the El Mariachi. It’s not likely that a single owner would need to replicate all possible permutations in the span of four seasons, but a fatbike in the winter and a rigid dirt road tourer, a la Fargo, would satisfy me. Others may wish to be riding a Mariachi-like suspension 29er through the sunny season, and still others may prefer a faster riding Vaya-type commuter or tourer with medium width tires and racks. A bike with tires to fit exact clearances has a smart appearance, but a fatbike frame with seasonal personality is brilliant. Imagine, lessening the number of bikes in the house allows you to splurge on the titanium model. Now, you have a titanium snowbike, tourer, and mountain bike.

Below, a Salsa Mukluk 2 with Nokian Extreme 294 studded tires on a Salsa Gordo 29er rim, and red Salsa hubs. The fork is suspension corrected, and exhibits greater vertical clearance

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Aside from the financial benefit of owning a single versatile bike over a stable of specialized breeds and the satisfying minimalism of making a lot out of a little, riding a single bicycle with two sets of wheels through the year may benefit that which is most important, the rider. A rider accustomed to a single bicycle may develop a familiarity with the machine and develop skills specific to riding that bicycle– it’s fit, its geometry and steering– in all conditions. The feeling of being on a new bicycle is exciting to most people with new features whose powers can be harnessed, but riding a new bike most often reminds me of my High Sierra, whose level of familiarity is unparalleled in anything I have ridden. Rather, I have never spent as much time with anything. As a result, I feel that I can do anything on it, short of floating over loose sand and snow. I’ll match paces with roadies and mountain bikers in the same day on my High Sierra, but with a “fatbike for all seasons”, I could add the Susitna or White Mountains 100 to that list. On the same bike, one could ride snowmobile trails in Alaska, tour the paved AlCan Highway south, the dirt tracks of the 2700 mile Great Divide Route, and continue west along the ACA’s paved Southern Tier Route to Florida as fall approaches. With fat tires once again, one could ride the beaches of Daytona or St. Augustine, scoping the surf or the hotel swimming pools.

A few caveats of riding a fatbike all year:

The 100mm bottom bracket width spaces the cranks further apart than on typical road and mountain bikes. I haven’t noticed any discomforts as a result, and am questioning the wisdom that insist narrow cranks are kinematically more kind to one’s body and more efficient to pedal. It may just be another antiquated French obsession.

The 170mm rear hub is not widely stocked by bicycle shops.. The current offerings are mostly high quaility hubs with common sealed cartridge bearing sizes and standard freehub bodies. As a result, short of hub body failure, parts are all standard. At the moment, most 170mm hubs are more expensive than even an XT quality hub, which is laughably cheap in a work of two thousand dollar wheelsets. Internal gear hubs are suited to offset frame designs if desired, as they maintain 135mm spacing. Salsa makes a spacer for the rear end of the Mukluk to accommodate internal gear hubs or owners with existing offset wheels (from a Pugsley, for example).

A 26″ (559mm) fatbike tire almost exactly shares an outside tire diameter with common 29er tires, preserving most handling characteristics in the wheel swap. Theoretically, a smaller tires would lower the bottom bracket height, and quicken the steering as geometric trail decreases, assuming a smaller outside wheel diameter. Twenty-niner tires (622mm)– smaller in volume (as opposed to 4″ fat tires)– would also lessen the experience of pneumatic trail, in which a tire operating at lower pressures resists a change in course, mimicking the experience of geometric trail and thus similarly named. I have ridden 40mm-622 Schwalbe Marathon Winter tires on a Mukluk and was pleased with the result. Tires less than 40 may begin to negatively affect the steering of the bike, although pedal clearance still may not be an issue due to the higher bottom bracket on most fatbikes. Get in on the ground floor as next year’s bike craze is certain to be some combination of low-trail steering geometry, rigid 29ers, and fatbikes.

Finally, with a variety of rigid and suspension forks available, steering geometry could even be honed to specific needs.

Other notable links:

Not my first wheel size experiment, check this 26″ to 650b conversion on the Velo Orange Blog.

The now-famous beach ride from Hope to Homer on a first generation purple Pugsley and Lil Ray, the only bike built by Ray Molina on the internet.

John Evingson of Anchorage has built one of the nicest fatbikes I’ve seen, before 4″ tires were available. Nice racks.

An interesting history of Snowcat rims, the original 44mm wide, lightweight singlewall snow rim, which can extend the range of any mountain bike.

The Salsa Enabler fork features the appropriate dimensions to run a fat tire on the front of a suspension corrected 29er, which is gaining strength, and the moniker “half-fat”. This steel fork would also be a worthy 29er fork for touring with it’s multiplicitous mounting locations.

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A custom flat black powdercoated Mukluk, showing parts compatability from a Specialized Hard Rock commuter with rigid Surly 1×1 fork. A new rear wheel, bottom bracket and seatpost were required. With Schwalbe Marathon Winter tires, this bike will complete this season as pictured, and will get a new pair of shoes next fall– Surly Clownshoe rims. Note: kickstand, rack, dynamo and upright bars– a solid winter commuter.

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For further discussion of alternative fatbike setups, continue to “A bike for all seasons, Part   2”.

11 thoughts on “One bike for all seasons

  1. Wow, great article! Thanks for all the research. I’ve so far resisted the fatbike urge but it’s great to have this resource. Do you see many fat-lites up there?

  2. I haven’t seen a single half-fat or fat-lite (sounds like a Weight Watchers salad dressing) up here. I am told a few Salsa Enabler forks have been sold to owners with 29ers, but don’t have anything to report. In my estimation, it would extend the range of a current bike, but the rear tire width would still be the limiting factor and the rear supports much of the load of the rider and provides traction. It wouldn’t be a real snow machine, but might let you ride over Indiana Pass a few weeks before the snow melts or after the first fall snowfall, or to explore some hardpacked snowmachine trails in the area. Certainly it would be fun to try any time of year. A Snowcat rim paired with a 2.5″ tire might do the trick, and the new Marge Lite rims (65mm singlewall) would roll nicely up front..

    I’m gaining appreciation for wide rims suited to standard mtbs, such as DH style rims in excess of 30mm, and the venerable singlewall Snowcats which can be cut-out for even less weight. With the exception of backcountry snowbiking and a few days in town when the snow is fresh, a Snowcat setup would be an ideal winter commuter in Anchorage and a great winter trailrider through this past month, when little snow fell and temperatures were consistently cold. The trails were well packed and quite wide.

    • How about 650b Snowcat rims (for real)? And the White Brothers carbon “Snowpack” fork is technically lugged construction, with some nice embellishents. High polish titanium is the new chrome. If I get Rene Herse cranks can I still get a miniscule Q-factor on my Pugsley? Add it all up, shake it around and you’ve got next year’s bike trends.

  3. Great article – FAT is where it’s AT!

    I’d recommend anyone thinking of a fat bike try using the stock fatty rubber in summer before investing in any skinny wheels/rubber for your bike. You may find, like a lot of us, that there is not nearly the need for it as you imagined before you owned your fatty. You can always get the 2nd wheelset later if you want, but may just save yourself a ton of $$.

    BTW – look into all the factors of using an IGH with a 170mm fat bike I think you’ll find the compromises don’t make sense.

    Ride Fat and Smile!

    Vik
    http://www.thelazyrando.com

    • Thanks Vik. These seem to be the issues with IGH compatibility with the Salsa offset spacer for the Mukluk. Either a torque-arm or non-rotating washers are used to securely fix the axle of an IGH to the frame, which is an integral part of the internals. The torque arm on some hubs would be difficult to impossible to accomodate, and the non-rotating washers on Nexus and Alfine are fit to a solid axle, and the 0ffset Spacer is intended for a 170mm QR axle through a 135mm hub. If I understand correctly, the Rohloff with the OEM2 plate (mount to ISO disc) and QR would work, but of course a tensioner would be needed. This is a significant benefit of the Surly design, which is interesting to realize in a climate of lighter, more specialized fatbikes. I enjoy the Puglsey and appreciate the Surly mentality of resilient bikes and adaptable designs, but the Pugsleys are perceived as a bit passe around here. Funny how quickly things pass.

      • I’m thrilled at the prospect of riding the big tires year round. The dual-purpose fatbike I describe is intended for those looking for a solution to commuting and riding year round, without owning a house full of bikes, such as myself. If I ever have a house, I may then fill it with bikes.

        Btw, framebags are becoming standard equipment on fatbikes around here, largely due to Revelate’s association with QBP in the States. They are available in shops to fit the full range of fatbike frame sizes from Surly, Salsa, and Fatback.

      • The Pugsley is high underrated:

        – takes IGH, derailleurs or SS/FG no problem
        – classic MTB geometry for snow/sand or dirt riding [without feeling like a cruiser bike]
        – big frame area inside front triangle for a frame bag [bike packing]
        – both wheels are swapable so when you rip your derailleur off at -20 deg or your pawls freeze and the rear hub freeewheels you swap in your FG front wheel and can ride the last 20miles home instead of walk.
        – can fit 4.7″ tires on 82mm rims
        – the Moonander can fit wider tires, but loses the front to rear swapability [hopefully that will get corrected in future years]

        safe riding,

        Vik
        http://www.thelazyrando.com

  4. Pingback: One bike for all seasons, Part 2 | gypsy by trade

  5. Pingback: As high as possible: Anchorage, AK | gypsy by trade

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