How much rolling resistance do fat bike tires really generate?

Bicycle-Rolling-Resistance_schwalbe-jumbo-jim_testing-rig

Bicycle-Rolling-Resistance_schwalbe-jumbo-jim_testing-rig

No one ever says “I want more rolling resistance with my new set of tires”, but it isn’t always easy to really know what you are getting into. On road bikes it seems like there are maybe two simple questions to predict rolling resistance: is the tire expensive, and is it really light? If you answer yes to both of those, you have pretty good odds of getting a fast tire. Not guaranteed, but it’s a decent start. On the mountain bike, it seems that the correlation between high cost/low weight and low rolling resistance isn’t so clear, and when you take the leap to a fat bike, that just goes out the window.

So that’s where independent testing comes in, and no one currently seems to offer a more comprehensive list of tires with a repeatable test protocol than Jarno Bierman of Bicycle Rolling Resistance in the Netherlands. His latest round of tests pits 8 fat tires against each other to see how much 4” tires are really trying to slow you down. Check out which fat tires fare the best, and even get a look at how the real difference between butyl and latex tubes and tubeless adds up…

Continue reading “How much rolling resistance do fat bike tires really generate?”



No one ever says “I want more rolling resistance with my new set of tires”, but it isn’t always easy to really know what you are getting into. On road bikes it seems like there are maybe two simple questions to predict rolling resistance: is the tire expensive, and is it really light? If you answer yes […]

Posted in Fatbike24 Comments

First Impressions: Riding the Pivot Switchblade in 29 and 27.5+ on Moab’s best trails

Pivot switchblade long travel 29 27 plus full suspension mountain bike-2
Pivot switchblade long travel 29 27 plus full suspension mountain bike-12
Photo c. Pivot Cycles/Lear Miller

For the launch of their newest bike, Pivot did things a bit differently. After showing up to Moab, the only information we were given on the Switchblade was that which we could detect with our own eyes. The bikes were set up to our exact specifications, pressures dialed, and pedals installed. Soon it was time for dinner so we could be up bright and early to hit the trail.

As we boarded the Whole Enchilada shuttle, we knew that the bikes we were about to ride were capable of running 27.5+ or 29″ wheels, and that they were longer travel than anything we’ve seen from Pivot with the big wheels. We also knew we were in for the quintessential Moab experience as we climbed to the highest spot currently open on the famous Porcupine Rim Trail.

It was no secret that our first ride on the Switchblade would be on 29″ wheels. We just didn’t know just how much fun the next few hours would be…

Continue reading “First Impressions: Riding the Pivot Switchblade in 29 and 27.5+ on Moab’s best trails”



For the launch of their newest bike, Pivot did things a bit differently. After showing up to Moab, the only information we were given on the Switchblade was that which we could detect with our own eyes. The bikes were set up to our exact specifications, pressures dialed, and pedals installed. Soon it was time […]

Posted in Bicycles, Fatbike, Feature, Mountain Bike, Reviews7 Comments

Framed Bikes releases the 27.5+ Marquette in affordable aluminum

Framed Marquette aluminum 27.5+ bike

Framed-marquette-alum-white

Flipping through catalogues of $8000+ bicycles can get annoying pretty quick for average people who live on a budget, but thankfully there are a few cycling companies who appreciate the concepts of value and affordability. Framed bicycles is one of those brands, providing everything from fat bikes to commuters to BMX’s at very competitive prices.

Framed is clearly shooting to have an option for every kind of cyclist, so it’s no surprise to see them catering to the 27.5+ market with their Marquette bikes. Recently Bikerumor checked out two carbon Marquettes, which sell for about $2000 and $2200 MSRP. The aluminum versions have now been released, and as expected they’ve cut those prices even lower to tempt you to ‘plus’ another bike into your quiver…
Continue reading “Framed Bikes releases the 27.5+ Marquette in affordable aluminum”



Flipping through catalogues of $8000+ bicycles can get annoying pretty quick for average people who live on a budget, but thankfully there are a few cycling companies who appreciate the concepts of value and affordability. Framed bicycles is one of those brands, providing everything from fat bikes to commuters to BMX’s at very competitive prices. […]

Posted in Fatbike, Mountain Bike11 Comments

SOC16: Bontrager hits the trail with new dropper seatpost, oversize AM cockpit & wider XC carbon wheels

Bontrager-Line-XXX-and-Kovee-XXX-carbon-XC-mtb-wheels01

With the introduction of the new Trek Farley full suspension fat bikes, they also introduced a lot of new components to out fit them and the rest of their line, including trail and cross country mountain bikes.

Starting with XC, the new Kovee XXX carbon wheels started out as an experiment to see if their pro racers (like Emily Batty) would like a wider rim. They tested various widths and heights, and ended up at a 29mm internal width, but a shallow 27mm height to give it more compliance and save weight. They also used Impact Specific Resins, which they’ve implemented in more aggressive wheels, but switched to lighter weight carbon fibers to create their lightest-ever MTB rim…

Continue reading “SOC16: Bontrager hits the trail with new dropper seatpost, oversize AM cockpit & wider XC carbon wheels”



With the introduction of the new Trek Farley full suspension fat bikes, they also introduced a lot of new components to out fit them and the rest of their line, including trail and cross country mountain bikes. Starting with XC, the new Kovee XXX carbon wheels started out as an experiment to see if their […]

Posted in Fatbike, Mountain Bike, Sea Otter Classic16 Comments

Optimal traction on the fly with White Crow tire pressure adjusting hubs

WhiteCrow-Hub_winter-fat-gravel

WhiteCrow-Hub_winter-fat-snow

Let’s start with the idea that the White Crow hubs let you adjust your tire pressure as you are riding along.  That, in itself is no simple feat, but you might also think that it couldn’t possibly be worth all of the extra complexity (and probably weight too) just to be able to let air out of the tires while riding along. But of course it is much more nuanced than that.

With the growth of fat bikes (and maybe even plus-sized tires) for a lot of trail riding and racing, the difference in a few PSI, or even a 1/2 PSI in a fat bike in a race, can make a huge impact on grip, especially over loose surfaces. Plus, White Crow not only lets you lower or reinflate your tires on the go, it also uses a dual chamber system, much like we’ve seen recently with ProCore that actually lets us run even lower pressures without the risk of pinch flatting or burping a sidewall. So, how does it do it…

Continue reading “Optimal traction on the fly with White Crow tire pressure adjusting hubs”



Let’s start with the idea that the White Crow hubs let you adjust your tire pressure as you are riding along.  That, in itself is no simple feat, but you might also think that it couldn’t possibly be worth all of the extra complexity (and probably weight too) just to be able to let air […]

Posted in Fatbike, Gadgets & Hacks, How To, Mountain Bike27 Comments

Video: Pivot celebrates International 429 Day, Maxxis stays planted on the shore with Plus

This is it. The day in April mountain bikers wait for all year. A day of celebration, a day of smoking… tires? That’s right, it’s International 429 Day. A day that celebrates the fun nature of the Pivot Mach 429 Trail. To honor the occasion, Brice Shirbach loads up and heads to the woods in Pennsylvania with his Pivot-Reynolds Enduro team ride, and tries to share the stoke.

While Brice was blasting through the woods on average size Maxxis rubber, Jesse Melamed puts the Rekon+ and Ikon+ to the test on the North Shore, next…

Continue reading “Video: Pivot celebrates International 429 Day, Maxxis stays planted on the shore with Plus”



This is it. The day in April mountain bikers wait for all year. A day of celebration, a day of smoking… tires? That’s right, it’s International 429 Day. A day that celebrates the fun nature of the Pivot Mach 429 Trail. To honor the occasion, Brice Shirbach loads up and heads to the woods in […]

Posted in Fatbike, Mountain Bike, Video4 Comments

Aaron Baker’s monstrous Honey Badger mountain bike trike by Adaptive Reactions

Photo: Michael Darter
Photo: Michael Darter

Aaron Baker was a motocross athlete who was paralyzed in training in 1999. When he crashed, Baker broke cervical vertebras 4, 5 and 6, rendering him quadriplegic. Despite virtually zero chance of regaining any function below the point of injury, Aaron focused his mind and energy on regaining function and now walks intermittently with cane assistance.

Now, he owns and operates an adaptive gym, C.O.R.E., and has built this bad-ass fat trike mountain bike. The official name is Stinger, but Aaron nicknamed it the Honey Badger thanks to the way he rides it – getting nasty over the trail and kicking up on one or two of the three wheels.

Built by Reactive Adaptations, you can check out the details below…

Continue reading “Aaron Baker’s monstrous Honey Badger mountain bike trike by Adaptive Reactions”



Aaron Baker was a motocross athlete who was paralyzed in training in 1999. When he crashed, Baker broke cervical vertebras 4, 5 and 6, rendering him quadriplegic. Despite virtually zero chance of regaining any function below the point of injury, Aaron focused his mind and energy on regaining function and now walks intermittently with cane […]

Posted in Advocacy, Fatbike, Gadgets & Hacks, Industry News, Mountain Bike7 Comments

SOC16: Lake warms up w/ new MXZ 400 Winter Boot, adds new CX shoes, revamped CX332, full custom 402, more

Lake custom 402 road shoes climbing cx332 mx237 mxz400 winter boot cx301 ultra light climbing shoe cx mx 237IMG_3769

For most of us, winter just ended so it’s time to prepare for… winter? Thanks to the nature of product cycles, some companies are already a few seasons down the road, which is why Lake gave us a sneak peek at their latest winter boot – the mighty MXZ 400. The MXZ 303 was already one of the warmer boots on the market, but with hardcore adventurers riding fat bikes to new extremes, the demand is there for even warmer winter boots. With twice the insulation of the 303s, the 400s should leave your toes plenty warm…

Continue reading “SOC16: Lake warms up w/ new MXZ 400 Winter Boot, adds new CX shoes, revamped CX332, full custom 402, more”



For most of us, winter just ended so it’s time to prepare for… winter? Thanks to the nature of product cycles, some companies are already a few seasons down the road, which is why Lake gave us a sneak peek at their latest winter boot – the mighty MXZ 400. The MXZ 303 was already […]

Posted in Clothing-Gear-Tools, Cyclocross, Fatbike, Mountain Bike, Road Bike, Sea Otter Classic11 Comments

SOC16: Knight Composites forms new 35mm road and CX tubulars, shows super light 27.5+ Rim

Knight composites road 30 cx tubular carbon fiber wheels plusIMG_3762

When it comes to industry experience, newly formed wheel company Knight Composites has it in spades. The newly formed super group includes industry veterans Jim Pfeil, Beverly Lucas, and Kevin Quan who combined have loads of experience with companies like Reynolds composites, EDGE and ENVE, Diamondback, and Neilpryde. Together, they’ve each made contributions to changing the carbon bicycle landscape and for their next project, they thought they could make a better wheel. Again.

After launching the brand with their first road wheels which promised to be faster and more stable, Knight Composites turned their focus towards mountain bikes with some wide but super light carbon options. Back in January, Knight promised some news in the form of tubulars for both road and CX, and they made good on the promise at Sea Otter…

Continue reading “SOC16: Knight Composites forms new 35mm road and CX tubulars, shows super light 27.5+ Rim”



When it comes to industry experience, newly formed wheel company Knight Composites has it in spades. The newly formed super group includes industry veterans Jim Pfeil, Beverly Lucas, and Kevin Quan who combined have loads of experience with companies like Reynolds composites, EDGE and ENVE, Diamondback, and Neilpryde. Together, they’ve each made contributions to changing […]

Posted in Cyclocross, Fatbike, Mountain Bike, Road Bike, Sea Otter Classic11 Comments