B Fat Fatillac.- Mtbr.com
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Thread: B Fat Fatillac.

  1. #1
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    B Fat Fatillac.


    I don't know exactly how long it's been. Maybe 5 or 6 years? I think it was 2013 when I first fiddled with 29+ tires, and the world just hasn't looked the same since.

    But lots of people have ridden Plus tires. They feel different from everything that came before, but still sort of normal. Like, normal, but with more cush and additional privileges bestowed upon the rider.

    I briefly rode 26 x 4" tires and they were crazy capable but equally slow. That phase burned hot, bright -- but only briefly before I moved on.

    Where I really turned a corner was when I started riding B Fat, aka 27.5 x 3.8" tires.



    There is something about this combo that just works for me as a daily driver on the Colorado Plateau. The ability to run high single digit pressures is part of it. The capability of 5" or 6" of travel suspending the rider above those meats is another.



    There are other options for this wheelsize out there -- I've ridden every one I could get my hands on -- but it took Devin Lenz and his fabrication wizardry to dial in the geometry.



    Tires this size will never approach the climbing speed of a 29 x ~2.5" setup. But the rougher the trail, the more chossy the line, the more %^$ed up the landing, the more B Fat shines.



    I don't enjoy crowds so as they continue to flock to my current home trails I find myself riding more of the fringe routes and lots of off piste. This chassis shines at that sort of thing: Plump tires to smooth out the rough, low gearing to tractor up, um, anything, sporty geometry to keep me grinning when things point down, and tying it all together is supple, tractable, tunable suspension that can be (and has been!) dialed to suit me. Or you.



    It's not much of a secret that I did unspeakable things to my body in the years that I was harassed by endurance racing demons. I'm paying that bill now. I need a cushy, compliant ride or I'm limited on how long I can ride, or how often. I'm delaying ankle fusion as long as I can because that's a one-way street, and in that hopefully substantial interim the Fatillac pictured here is my ticket to ride.



    I mentioned above that I turned a corner when I started riding B Fat. It's sort of like eating plain macaroni every day and being perfectly fine with it. Then one day you discover that you can has cheese...



    The past few years have seen a steady stream of manufacturers offering bikes that can be swapped from 29 x 2.5" wheels to 27.5 x 2.8". Choices are good, right? The bummer is that that size of 29" tire is so harsh, and that variant of a 27.5" tire is so short. From where I sit that combo is literally the worst of both worlds -- unless we're talking 26". Which we aren't.

    In a similar vein I have a second wheelset with 29 x 2.8" tires that I can quick-switch into this bike when needed. I spent ~30 minutes micro shimming the rotors out such that no brake adjustments are needed: When I want to swap wheels for a ride it's a ~2 minute job and out the door I go.

    But that's rare. I like cush -- pretty much require it -- and the calm, competent cushiness of the B Fat Fatillac has been a revelation this spring.



    Our trails have only been dry enough to ride for ~3 weeks, and in that time I've repeatedly torched my legs while incinerating endorphins (and grinning ear to ear) 6 days out of every 7.

    It's not for everyone. No one bike is. If you like chunky, chossy, messy trails, or exploring washes and off piste, or steamrolling through babyheads...

    https://www.youtube.com/watch?v=GV2Y2kIUkIs

    Don't hesitate with questions.


  2. #2
    fat guy on a little bike
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    That bike would be sooo much nicer if it was green... It would be the cheesiest! :P

  3. #3
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    Quote Originally Posted by Rodney View Post
    That bike would be sooo much nicer if it was green... It would be the cheesiest! :P

    Like, um, vomit-on-your-shoes green?

    Or spiderman's-nuclear-pee-green?

  4. #4
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    Quote Originally Posted by mikesee View Post
    Like, um, vomit-on-your-shoes green?

    Or spiderman's-nuclear-pee-green?
    neither.

    Hulk Smash gamma ray green is the h0tne55...

  5. #5
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    that's sort of what i envisioned your hair looking like...


  6. #6
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    What rim width are you running with the B fat 3.8 tires?
    I've been curious to try on my 42mm... For the spring and fall season.

  7. #7
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    Quote Originally Posted by Shark View Post
    What rim width are you running with the B fat 3.8 tires?
    I've been curious to try on my 42mm... For the spring and fall season.

    45mm internal Derby's.

    42mm? No way -- you'll die.

    Kidding aside, that's about as narrow as I'd want to go with 3.8's. Apropos (high enough) pressure mandatory.

  8. #8
    All fat, all the time.
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    Quote Originally Posted by mikesee View Post

    42mm? No way -- you'll die.
    Damnit I was afraid of that

    I run a 4.8 on a Marge lite for the winter, kind of the same rim vs tire size, I'll give it a try next time I need fresh tires.
    Thanks for the input.

    I'm enjoying the lenz and swapping different wheels.

  9. #9
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    That is such a nice looking bike makes me want to buy a new bike. My mutz doesnít have room for the 29+ :-(

  10. #10
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    Quote Originally Posted by exp18 View Post
    That is such a nice looking bike makes me want to buy a new bike. My mutz doesnít have room for the 29+ :-(
    Yup, I sold my Mutz and my Fatillac for that reason.... so the new bike is looking mighty fine.
    For Sale: XMed GG Smash Frameset +
    Lrg GG Shred Dogg
    Lrg Fezzari Signal Peak
    Lrg Pivot Shuttle (wife's)

  11. #11
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    Quote Originally Posted by Nurse Ben View Post
    Yup, I sold my Mutz and my Fatillac for that reason.... so the new bike is looking mighty fine.
    So did i miss understand that a Fatillac will run a 29+?

  12. #12
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    Quote Originally Posted by exp18 View Post
    So did i miss understand that a Fatillac will run a 29+?
    Current Fatillac frame will only take 29x2.8, NOT 29x3. I will let mikey elaborate on rim widths and tire models.

    Although, ask me again in a few months...

  13. #13
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    A few months might work well with adding a new bike to my collection.

  14. #14
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    Fatillac can fit 29x3.0, you just need to ask nicely.
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

  15. #15
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    Quote Originally Posted by MendonCycleSmith View Post
    Fatillac can fit 29x3.0, you just need to ask nicely.
    As long as its not a ebike

  16. #16
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    Quote Originally Posted by exp18 View Post
    As long as its not a ebike
    There goes another thread....

  17. #17
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    I've run mine with 26", 65mm rims and Nate's, kind of"go through anything" feeling bike.
    Summer time I'm running B+, 3" tires makes thing fly.

    Haven't ever felt the need to try 29"X3...

  18. #18
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    Does lenz make an e bike?? Lol

  19. #19
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    Interesting...I see Prescott.
    "It's only when you stand over it, you know, when you physically stand over the bike, that then you say 'hey, I don't have much stand over height', you know"-T. Ellsworth

    You're turning black metallic.

  20. #20
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    Such a nice bike!

    How does a 27.5 3.8 hodag stack up against a 29+ Chup in Diameter or a 26 inch bud for example? Really fancy experimenting with 27.5on my current 9zero7 but dont want to drop my BB any, else its will be pedal strike city.

  21. #21
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    E bikes?

    I prefer D Bikes, personally, as does Moose, in fact, we were out on my Lenz D Bike last night.....
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

  22. #22
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    Quote Originally Posted by Flying_Scotsman View Post
    Such a nice bike!

    How does a 27.5 3.8 hodag stack up against a 29+ Chup in Diameter or a 26 inch bud for example? Really fancy experimenting with 27.5on my current 9zero7 but dont want to drop my BB any, else its will be pedal strike city.
    27.5x3.8 Hodag is about 750mm (29.5") diameter, where as 29" Chupa is 768-770mm (30.25") and Bud is 775mm (30.5").
    "I ride to clear my head, my head is clearer when I'm riding SS. Therefore, I choose to ride SS."~ Fullrange Drew

  23. #23
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    Quote Originally Posted by nitrousjunky View Post
    27.5x3.8 Hodag is about 750mm (29.5") diameter, where as 29" Chupa is 768-770mm (30.25") and Bud is 775mm (30.5").
    Thanks! I am running 4.8 JJ atm, so I might drop a little BB height.

  24. #24
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    When the light shines on that copper frame, it's beautiful against the desert background. Just don't set it down and walk too far away. Nuclear green? No.
    I don't know why,... it's just MUSS easier to pedal than the other ones.

  25. #25
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    Quote Originally Posted by dbhammercycle View Post
    When the light shines on that copper frame, it's beautiful against the desert background. Just don't set it down and walk too far away.
    Agreed. Same thing if you left it in a cow pasture, it would get lost in the sea of poo...

    Quote Originally Posted by dbhammercycle View Post
    Nuclear green? No.


    I live near a nuclear power plant, I want it to blend in too...

  26. #26
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    If it's to be green, then british racing green with some silver flake is acceptable.

    Several years ago in '96 I toured a nuclear power plant in MN and had to walk through the radiation detector a few times while listening to a story my dad's college friend, tour guide RIP Steve, told about a time he had to completely undress and be hosed down before he was allowed to exit to his office and change into another set of clothes. I suspect they were messing with me. In any case, I'm not into it. At one point I even worked with radioactive isotopes, mostly tritium. I've read the comics, Lou will always be the best Hulk, and seen the Jap-anime. Still nope.

    I also have to add I've seen the 5000 fingers of Dr T and remember how Bart saved himself by cooking up a radioactive soup he used to threaten Dr T. Still no.
    I don't know why,... it's just MUSS easier to pedal than the other ones.

  27. #27
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    Quote Originally Posted by dbhammercycle View Post
    If it's to be green, then british racing green with some silver flake is acceptable.



  28. #28
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    I'm... okay with that.
    I don't know why,... it's just MUSS easier to pedal than the other ones.

  29. #29
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    I'm so utterly tired of XXXXXXXXXTREEEEEEEEEEEEEEM green, kill it with fire.

    I do rather like Prismatics "Money Green" which mine came clad in though....
    Attached Thumbnails Attached Thumbnails B Fat Fatillac.-fatillac.jpg  

    This is a Pugs not some carbon wannabee pretzel wagon!!

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  30. #30
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    The carpet doesn't match the drapes on that bike... :P

  31. #31
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    And there is a problem with the fork too lol

  32. #32
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    Quote Originally Posted by exp18 View Post
    So did i miss understand that a Fatillac will run a 29+?
    Not unless Devin changed something, no 29+, max 29x 2.5; itís a diameter thing.
    For Sale: XMed GG Smash Frameset +
    Lrg GG Shred Dogg
    Lrg Fezzari Signal Peak
    Lrg Pivot Shuttle (wife's)

  33. #33
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    Quote Originally Posted by Nurse Ben View Post
    Not unless Devin changed something, no 29+, max 29x2.5
    You have been out of the fat game for while now, you have lost touch. go play with your skinny tired friends... :P

  34. #34
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    Monotone frames are boring, and fork? Forks have two legs, I see no fork on this bike.... :P
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

  35. #35
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    Quote Originally Posted by Nurse Ben View Post
    Not unless Devin changed something, no 29+, max 29x 2.5; itís a diameter thing.

    Reading comprehension, Ben.

  36. #36
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    Quote Originally Posted by Shark View Post
    Does lenz make an e bike?? Lol
    Don't answer that, I don't want to know. Don't ruin my dream man!

  37. #37
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    Quote Originally Posted by MendonCycleSmith View Post
    Monotone frames are boring


    Quote Originally Posted by MendonCycleSmith View Post
    fork? Forks have two legs, I see no fork on this bike....
    so what is it called then? a Fo? :P

    back on topic: Rode my big/little B Fat Fatillac yesterday. Such a great steed, climbs stupid well and decends even better. I F'n love* it!

    *except for the color... :P
    Quiver:
    2016 Surly Wednesday
    2017 Lenz Fatillac
    2019 Lenz Fatillac

  38. #38
    All fat, all the time.
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    I would trade mine for a root beer color, not green though.

    Sent from my SM-G960U using Tapatalk

  39. #39
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    Quote Originally Posted by Shark View Post
    I would trade mine for a root beer color, not green though
    I understand. It takes a real man that is comfortable with himself to pull off the neon green. Same thing goes for having a pink cast while wearing a spinner hat...
    Quiver:
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  40. #40
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    Nice cast, pink and green, wasn't that what the preppy kids wore back in the 80's?
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



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  41. #41
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    Do purple hubs count for anything? They made me faster.

  42. #42
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    Purple ALWAYS counts.
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

  43. #43
    fat guy on a little bike
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    Quote Originally Posted by MendonCycleSmith View Post
    Nice cast, pink and green, wasn't that what the preppy kids wore back in the 80's?


    Quote Originally Posted by Shark View Post
    Do purple hubs count for anything? They made me faster.
    Quote Originally Posted by MendonCycleSmith View Post
    Purple ALWAYS counts.
    Quiver:
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    2017 Lenz Fatillac
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  44. #44
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    Win.
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

  45. #45
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    Viscoset.

    I've been running Hopey steering dampers on my snowbikes for ~10 years. I've written a lot about them elsewhere so I won't belabor that point. Essential, in a word.

    Tried a Hopey on a dirt/mountain bike once. Once. Hate is not too strong a word. Bled, finished the ride, then removed it.

    The Viscoset is different. Similar idea, different execution. Stacked one on top of the Hopey on my snowbike last winter. Loved it. Ran 'em both at full max damping. LOVED.

    Installed it on this Fatillac on a whim. Figured I'd ride it once, hate it, remove it, and call it good. Nope. Running it at full max damping.

    So far I notice a lot less wandering of the front wheel when climbing. And a lot less oversteer in corners.

    It's staying.
    Attached Thumbnails Attached Thumbnails B Fat Fatillac.-hz4a0039.jpg  


  46. #46
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    Just thought it was worth sharing that I'm not the only one interested in/excited by this bike.

    https://www.adventure-journal.com/20...sion-plus-bike

  47. #47
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    Nice video and write up! Been looking at this bike for 3 years or so, ever since I first caught glimpse of the one you had with the Dorado on it. Had a hard time justifying it with when there is already a nice fs everyday bike and then a rigid fattie in the garage. Now that I see it can be ridden downcountry, I think there is a place for one

    In all seriousness, this bike looks to be exactly what I want in a bike. The bike that no matter what, it's fun and capable. I have a sneaking suspicion Devin will be getting a call from me before long.

    Interesting on the viscoset, hadn't even given them a thought, but I can see where it would be useful.

  48. #48
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    Don't hesitate with questions.

    [/CENTER][/QUOTE]

    How do those handle thorns? Lots of flats and patching or do you run some sealant?

    Thanks

  49. #49
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    Quote Originally Posted by mikesee View Post
    Just thought it was worth sharing that I'm not the only one interested in/excited by this bike.

    https://www.adventure-journal.com/20...sion-plus-bike
    Iím battling ankle problems too. What brace are you using in the video?

  50. #50
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    [/QUOTE]

    How do those handle thorns? Lots of flats and patching or do you run some sealant?

    Thanks[/QUOTE]

    Sealant solves 99.9% of it.

  51. #51
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    How do those handle thorns? Lots of flats and patching or do you run some sealant?

    Thanks[/QUOTE]

    Sealant solves 99.9% of it.[/QUOTE]

    Thank you. Anything in particular or does regular ol slime work?

  52. #52
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    Quote Originally Posted by Just_Cruisin View Post
    Thank you. Anything in particular or does regular ol slime work?
    Ideal sealant is regional. Where I live I use Orange Seal Endurance.

  53. #53
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    Quote Originally Posted by Rodney View Post
    I understand. It takes a real man that is comfortable with himself to pull off the neon green. Same thing goes for having a pink cast while wearing a spinner hat...
    No one gave you props on the DM tee... what a shame 👍

  54. #54
    fat guy on a little bike
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    Quote Originally Posted by dbhammercycle View Post
    Nuclear green? No.
    No? More like YES...

    Quiver:
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    2017 Lenz Fatillac
    2019 Lenz Fatillac

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