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  1. #151
    Join Date
    Oct 2017
    Location
    Evergreen Co
    Posts
    969
    A 29’er with a 28 tooth front chainring and 10-42 or 10-50 has a higher top end gear than your setup that’s why some people are good with a 28 tooth ring.

    10 tooth vs 11 tooth is a big difference and wheel size matters. I have a 32 tooth front chainring and 10-50 on a 29’er and can easily spin into the upper 20’s. To replicate the same top end on a 27.5 bike with 11 tooth you’re likely looking at a 38 tooth chainring.

    Quote Originally Posted by alpinevibes View Post
    I’m on a five year old 27.5 trail bike with 32t and 11sp 11-46 and climb a lot. I wouldn’t mind a touch easier granny gear but I’d far rather gain more top end at this point. I’m spinning out on flat single track and bike paths. I can’t imagine a 28t or 26t in those situations.


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  2. #152
    Join Date
    Jun 2004
    Location
    Pemberton, BC
    Posts
    2,228
    Quote Originally Posted by funkendrenchman View Post
    Just bought a Camelbak Chase Vest. Loving it thus far. My hip pack always drove me crazy.
    They are sweet but be careful what u put in the chest pockets. I’ve lost more than a few things on descents.

  3. #153
    Join Date
    Oct 2011
    Location
    Aspen
    Posts
    3,058
    Quote Originally Posted by Tailwind View Post
    A 29’er with a 28 tooth front chainring and 10-42 or 10-50 has a higher top end gear than your setup that’s why some people are good with a 28 tooth ring.

    10 tooth vs 11 tooth is a big difference and wheel size matters. I have a 32 tooth front chainring and 10-50 on a 29’er and can easily spin into the upper 20’s. To replicate the same top end on a 27.5 bike with 11 tooth you’re likely looking at a 38 tooth chainring.
    Ahh ok that makes a lot more sense. I should’ve consulted the gearing ratios chart! I’ve been wanting to switch to a 29ers so that’s good to know.


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  4. #154
    Join Date
    Jan 2008
    Location
    BC to CO
    Posts
    4,864

    What have you bought/upgraded today.

    Quote Originally Posted by alpinevibes View Post
    Ahh ok that makes a lot more sense. I should’ve consulted the gearing ratios chart! I’ve been wanting to switch to a 29ers so that’s good to know.
    It’s both gear ratio AND inch gears to consider.
    There are many factors involved but to simplify it:
    A 32x10 on a 27.5 gets you 88” of forward movement for one full rotation of the cranks.
    A 32x10 on a 29er gets you 92.8” of forward movement for one full rotation of the cranks.

    Same gear ratio of 3.2 but different inch gears.
    Pedaling at a cadence of 100 in 32x10: (simplified)
    27.5 = 26.2 mph.
    29er = 27.6 mph.

  5. #155
    Join Date
    Dec 2007
    Location
    The better LA
    Posts
    2,449
    Quote Originally Posted by jamal View Post
    Interesting, how does that work?

    I do notice in the chart that the m5100 and 4100 rear derailleurs are listed in both the 10s and 11s charts so that's kind of handy. Which kind of implies that maybe other shimano 10/11 mtb stuff can interchange?
    They offer an 11sp 10-45 cassette with the same 12sp spacing for the XC race crowd. You just use the limit screws to lock out the derailleur. Saves a few grams and gives tighter gearing if you go 2x.
    Quote Originally Posted by Jer View Post
    After the first three seconds, Corbet's is really pretty average.
    Quote Originally Posted by Ian Malcolm View Post
    I mean, it's not your fault. They say talent skips a generation.
    But hey, I'm sure your kids will be sharp as tacks.

  6. #156
    Join Date
    Oct 2002
    Location
    Shadynasty's Jazz Club
    Posts
    10,248
    If you can borrow a 28t before buying one, or find a cheap one, It would be worth it. Most FS bikes (at least the ones I've owned/looked at) are designed around a 32t chain ring, 30t at the smallest. That 28t is gonna increase the antisquat in most cases. It may or may not bother you, but the difference is noticeable.
    Remind me. We'll send him a red cap and a Speedo.

  7. #157
    Join Date
    Jan 2009
    Location
    Park City
    Posts
    5,013
    I’d really recommend rolling out your wheel/tire combo as well when figuring out your gears. Tire size will make a huge difference.


    Sent from my iPhone using TGR Forums
    I rip the groomed on tele gear

  8. #158
    Join Date
    Jul 2005
    Location
    Boulder
    Posts
    6,044
    2020 Switchblade PRO XTR.

    Mostly stock at the moment but I added:
    Ridewrap (poorly)
    Shimano XT Crank with Wolftooth Boost spaced chainring
    Swapped on a 2.5 Aggressor in the rear

    i9 wheels and stem on the way.

  9. #159
    Join Date
    Oct 2003
    Location
    slc
    Posts
    17,889
    XtrPickles sighting! Glad to hear your bones haven't disintegrated and you're riding bikes.

  10. #160
    Join Date
    Mar 2011
    Location
    Magically whisked away to...Delaware
    Posts
    3,608
    Quote Originally Posted by XtrPickels View Post
    2020 Switchblade PRO XTR.

    Mostly stock at the moment but I added:
    Ridewrap (poorly)
    Shimano XT Crank with Wolftooth Boost spaced chainring
    Swapped on a 2.5 Aggressor in the rear

    i9 wheels and stem on the way.
    WRONG THREAD! Belongs in the "bikes that make your shorts tight" thread!
    It makes perfect sense...until you think about it.

    I suspect there's logic behind the madness, but I'm too dumb to see it.

  11. #161
    Join Date
    Feb 2008
    Location
    The Other Side
    Posts
    751
    So I started with the base spec c30 Slayer a couple years ago and saved up for the transformation below.

    SRAM Guide R -----> Formula Cura 4
    Rockshox Deluxe ----> Ext Storia Lok v3
    Volar rims and sram hubs -----> Nobl TR37 and Onyx Vesper Hubs
    Yari Fork ---> Updated 2021 Air Spring
    New Vibracore Handlebar
    New XG 1150 cassette

    I had a ton of fun on this bike over two years stock. Its now pretty much everything I dreamed it could be.
    Click image for larger version. 

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  12. #162
    Join Date
    Feb 2013
    Posts
    2,620
    I broke my stem last week so used it as an excuse to get a new stem, bars and grips. Yippee.

  13. #163
    Join Date
    Mar 2010
    Posts
    637
    picked up a beat wheelset on cl featuring a hadley ss rear hub and blown out rims
    fresh bearings all around, dt comps, rim of choice, and a day twisting the spoke key got me some fancy new dj wheels

    Click image for larger version. 

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    also finally found an ikon in 26x2.35 so threw that up front and giving it a try since schwalbe stopped making their only good tire the tabletop...

  14. #164
    Join Date
    Nov 2014
    Location
    SLC
    Posts
    5,846
    Upgrade the saddle which has been really nice, and sprung for a spank oozy vibrocore handlebar and some new tires. And new grips...

  15. #165
    Join Date
    Feb 2015
    Location
    MA
    Posts
    4,494
    Quote Originally Posted by Shu Shu View Post
    So I started with the base spec c30 Slayer a couple years ago and saved up for the transformation below.

    SRAM Guide R -----> Formula Cura 4
    Rockshox Deluxe ----> Ext Storia Lok v3
    Volar rims and sram hubs -----> Nobl TR37 and Onyx Vesper Hubs
    Yari Fork ---> Updated 2021 Air Spring
    New Vibracore Handlebar
    New XG 1150 cassette

    I had a ton of fun on this bike over two years stock. Its now pretty much everything I dreamed it could be.
    Click image for larger version. 

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    Like

  16. #166
    Join Date
    Jan 2009
    Location
    SLC burbs
    Posts
    4,186
    Jeebus mallwalker, haven't you been talked out of continuing to upgrade your ride? Descend into the money pit already and get a new one! Here, I'll make it easy and sell you my current bike, I need to somehow offset the cost of the new one I just bought to make myself feel better about my non-functional wrist...

  17. #167
    Join Date
    Nov 2014
    Location
    SLC
    Posts
    5,846

    What have you bought/upgraded today.

    Quote Originally Posted by Boissal View Post
    Jeebus mallwalker, haven't you been talked out of continuing to upgrade your ride? Descend into the money pit already and get a new one! Here, I'll make it easy and sell you my current bike, I need to somehow offset the cost of the new one I just bought to make myself feel better about my non-functional wrist...
    I have a whole “ship of theseus” thing going on here man! once I have replaced everything but the frame, I’ll do the frame, then the wheel set and fork again...

    (I probably can’t get away with buying a new bike this close to the kid being born, but the current bike is riding better and better! new tires should make a nice difference...)
    Last edited by mall walker; 07-22-2020 at 02:46 PM.

  18. #168
    Join Date
    Oct 2003
    Location
    slc
    Posts
    17,889
    Quote Originally Posted by Boissal View Post
    Jeebus mallwalker, haven't you been talked out of continuing to upgrade your ride? Descend into the money pit already and get a new one! Here, I'll make it easy and sell you my current bike, I need to somehow offset the cost of the new one I just bought to make myself feel better about my non-functional wrist...
    It's almost painful to watch.

  19. #169
    Join Date
    Jan 2009
    Location
    SLC burbs
    Posts
    4,186
    Quote Originally Posted by Dantheman View Post
    It's almost painful to watch.
    Right? Friends don't let friends play that game...

    MW you're luck I'm out of commission because I was planning to abduct you on one of your early AM Shoreline shreds and drop you off at the top of Crest with a demo bike...

  20. #170
    Join Date
    Nov 2014
    Location
    SLC
    Posts
    5,846
    ^ haha fellas if there were another way I'd do it... but if a new bike shows up in my garage it's gonna make my life worse than pissing away a few extra dollars will......though I'd take the Crest bump anytime don't worry I've already got a lengthy spreadsheet of bikes I'll be choosing between next spring

  21. #171
    Join Date
    Mar 2006
    Location
    Truckee, Ca
    Posts
    367
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    New storia for my Madonna.
    Snowmobiling is not a crime.

  22. #172
    Join Date
    Sep 2009
    Location
    in the trench
    Posts
    15,690
    Very appropriate. Purpose built ripper. Coil and raaw alu looks da bidness

    Sent from my SM-G950W using TGR Forums mobile app

  23. #173
    Join Date
    Feb 2014
    Location
    NorCal coast
    Posts
    1,944
    Nice, I've got one sitting on my workbench too, waiting for GG to send my Smash frame.

  24. #174
    Join Date
    Sep 2009
    Location
    in the trench
    Posts
    15,690
    Dang! Thatll be a nice ride. We need pics of that and more of that madonna

    Sent from my SM-G950W using TGR Forums mobile app

  25. #175
    Join Date
    Mar 2006
    Location
    Truckee, Ca
    Posts
    367
    Click image for larger version. 

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    Love this thing.
    Snowmobiling is not a crime.

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