Ibis launches Trans-Fat fat bike

Versatile carbon fiber snow tamer uses same front triangle as Tranny 29

29er Fat Bike News Winter Guide
The new Trans-Fat features the same front triangle as the Tranny 29.

The new Trans-Fat features the same front triangle as the Tranny 29 (click to enlarge).

Editor’s Note: This article is part of the Mtbr Ultimate Guide to winter mountain biking, fat bikes, gear, apparel and trainers. In the first two months of 2016, we are taking a deep dive into all manner of cold weather mountain bike gear, with round-ups and reviews of fat bikes, tires, wheels, apparel, trainers and more. To see all the articles, head over to our Winter Guide Hub Page.

Ibis Cycles is increasing their carbon footprint with the latest in a lineage of cleverly named bikes – the Trans-Fat. Thanks to its removable rear triangle that allows for easy packing for airline travel, as well as the ability to run belt drive, singlespeed or geared setups, the Ibis Tranny 29 is already a highly versatile bike. And with the announcement of the Trans-Fat, the Tranny can now serve as a bona-fide fat bike.

A wider rear triangle accommodates a four-inch fat bike tire.

The wide rear triangle accommodates a 4” fat bike tire (click to enlarge).

Using the same front triangle as the Tranny 29, the Trans-Fat features a new rear triangle that accepts 4” fat bike tires, a 177mm x 12mm Maxle thru-axle, 3mm crown race for proper axle to crown height, and a bottom bracket adapter to fit a 100mm BSA bottom bracket.

A spindle adapter fits a 100mm wide bottom bracket.

A spindle adapter fits a 100mm wide bottom bracket (click to enlarge).

The Trans-Fat also includes little details that have made the Tranny 29 such a hit, including internal dropper post routing and multi-option internal cable routing. And with the introduction of the Trans-Fat comes a new color – metallic orange. The Trans-Fat can also be had in matte black.

The Trans-Fat is on the sportier, more aggressive end of the fat bike spectrum. Photo by James Adamson – dropmedia.tv

The Trans-Fat is on the sportier, more aggressive end of the fat bike spectrum (click to enlarge). Photo by James Adamson – dropmedia.tv

I got a chance to ride the Trans-Fat the day after a fresh snowfall in Truckee, California. Thanks to its 4” wide tires, lightweight 3.25-pound frame, relatively short 452mm chainstays, and 70-degree head tube angle, the Trans-Fat is definitely on the more aggressive and nimble end of the fat bike spectrum. This combination of light weight and nimble geometry makes the Trans-Fat a capable climber and confident descender. Unfortunately, I wasn’t really able to ride the Trans-Fat for more than a couple hours, but I can definitely say that it rides like a fat bike, albeit a very agile and quick fat bike, for whatever that’s worth.

 A 70-degree head tube angle and 452mm long chainstays make the Trans-Fat fun to loft over snow drifts. Photo by James Adamson – dropmedia.tv

A 70-degree head tube angle and 452mm long chainstays make the Trans-Fat fun to loft over snow drifts (click to enlarge). Photo by James Adamson – dropmedia.tv

Besides how it rides, the bigger story here is versatility. With one front triangle and two rear triangles, you can have a geared cross-country hardtail, a sub-20 pound singlespeed with belt drive capability, a geared fat bike, or a singlespeed fat bike with belt drive capability. And don’t forget its ability to disassemble into two pieces, making it fit into a small suitcase to avoid oversize airline baggage fees.

Continue to page 2 for more on the new Ibis Trans-Fat fat bike »

About the author: Kurt Gensheimer

Kurt Gensheimer thinks the bicycle is man’s most perfect invention. He firmly believes ‘singlespeed’ is a compound word. He sometimes wears a disco ball helmet. He is also known as Genshammer. He is a Gemini and sleeps outside in a hammock.


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  • Mr Fat says:

    I was thinkng the same thing about Carver. Late to the game and un-original name. That kinda makes me think they didn’t do any research, but said “hey, we gotta get in on this” and just threw something together around a Tranny. Pretty sure most of us could do that. I also don’t think that rear triangle linkage is a great idea…unless you like flex and creaking

    • Mr Fat says:

      Corey, I was JUST about to post the same thing. Ha. How much did they pay you to say that? You must have a lot of extra money now that you got rid of Lopes (too soon?) :)

  • The Angry Singlespeeder says:

    I never said I either hate or am not cool with fat bikes. I just said that they’re not useful enough for me to own one. And for the record, I still don’t own one. Once in a long while I borrow a friend’s. Works out much better that way.

    ASS

    • Peper says:

      I prefer the chest pounding ASS who use to write “Jerry Seinfeld-esque” articles of observations in the cycling community. This Mitt Romney type flip flopping is why the comment count is down along with the digital clicks. So hike your tutu up and show us your ASS again.

  • Shark says:

    Fat Tranny would have been a better name…just sayin’ ;)

    Bring on the fat Mojo already.

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