Finally popped my 29er's off-road cherry- Mtbr.com
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  1. #1
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    Finally popped my 29er's off-road cherry

    Over the summer I built myself a frankenstein out of a Diamondback frame, Surly fork, and various odds and ends from eBay, Pacific Coast Cycles, and my uncle's parts bin. For a while it was my commuter because I got some Kenda Krosses for it off Nashbar for $6 each:


    I kept using my old 26er as a trail bike because I already had knobbies for it. Now I finally found a set of tires that 1) don't suck and 2) I can afford:






    Took it to Calavera for its maiden off-road voyage (didn't want to do the more advanced La Costa trails because I still had 32:16 gearing on it and was impatient to ride it) and WOW it's fast! Floats over the sand and makes rocks and roots feel like pebbles and pine needles. Ok that's a bit of an exaggeration but rigid 29" feels almost as smooth as my 26" HT did before the fork stopped holding oil. The gearing totally sucked at first but then I started to figure out a better standing pedal stroke (gotta put the arms and core into it) so I think going to an 18T in the back should be just right.

    I wanted to stay out longer but I didn't bring sunscreen and was running out of water

  2. #2
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    That's Bada$$!

    Looks like a wicked commuter, and great off-read as well!
    Brisbane, AU

  3. #3
    Trail Tire TV on blogger
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    ya, that actually looks cool, kinda like the flat paint scheme!!
    Going to try and bring Trail Tire TV back. go take a look... http://trailtiretv.blogspot.com/

  4. #4
    Virtus pre nummis
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    Quote Originally Posted by SquishyPanda
    Over the summer I built myself a frankenstein out of a Diamondback frame, Surly fork, and various odds and ends from eBay, Pacific Coast Cycles, and my uncle's parts bin. For a while it was my commuter because I got some Kenda Krosses for it off Nashbar for $6 each:


    I kept using my old 26er as a trail bike because I already had knobbies for it. Now I finally found a set of tires that 1) don't suck and 2) I can afford:






    Took it to Calavera for its maiden off-road voyage (didn't want to do the more advanced La Costa trails because I still had 32:16 gearing on it and was impatient to ride it) and WOW it's fast! Floats over the sand and makes rocks and roots feel like pebbles and pine needles. Ok that's a bit of an exaggeration but rigid 29" feels almost as smooth as my 26" HT did before the fork stopped holding oil. The gearing totally sucked at first but then I started to figure out a better standing pedal stroke (gotta put the arms and core into it) so I think going to an 18T in the back should be just right.

    I wanted to stay out longer but I didn't bring sunscreen and was running out of water
    What do you consider fast? 15MPH? Maybe 20MPH downhill? Going to an 18T cog is not going to make you faster! I ride a Monocog 29er with 32/16 gearing and 15 MPH is about as fast as you can go without spinning out. If you want to go faster then you need to go to a 32/14 or 32/13 then your arms and core will get a real workout! The 32/18 is going to slow you down and maybe help you climb a little better but that is about all it will do for you. Just my opinion! and like everyone says opinions are like A.....!
    Old age and treachery will overcome youth and skill!

  5. #5
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    Quote Originally Posted by Blazerwolf
    What do you consider fast? 15MPH? Maybe 20MPH downhill? Going to an 18T cog is not going to make you faster! I ride a Monocog 29er with 32/16 gearing and 15 MPH is about as fast as you can go without spinning out. If you want to go faster then you need to go to a 32/14 or 32/13 then your arms and core will get a real workout! The 32/18 is going to slow you down and maybe help you climb a little better but that is about all it will do for you. Just my opinion! and like everyone says opinions are like A.....!
    Feels fast enough to me I wanted to go to a bigger cog because I wasn't anywhere near spinning out (guess I'm not that fast) but I'm stalling out on hills. I guess that means I was going *really* slow on my old 26er with 38:20 gearing lol

    Or mebbe I should just work on making the motor faster after all. I see kids on fixies with twiggy legs cruising up hills with 46:16 gearing. Can't let the hipsters show me up

  6. #6
    Virtus pre nummis
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    Try this: Copy this over to Microsoft Excel so you can change the numbers to fit your needs. Ratio of 55 is supposed to be ideal. As you can see the 32/16 is about as close as you can get.

    Front Sprocket Tire Size Freewheel Ratio
    24 29 16 43.50
    25 29 16 45.31
    26 29 16 47.13
    27 29 16 48.94
    28 29 16 50.75
    29 29 16 52.56
    30 29 16 54.38
    31 29 16 56.19
    32 29 16 58.00
    33 29 16 59.81
    34 29 16 61.63
    35 29 16 63.44
    36 29 16 65.25
    37 29 16 67.06
    38 29 16 68.88
    39 29 16 70.69
    40 29 16 72.50
    41 29 16 74.31
    42 29 16 76.13
    43 29 16 77.94
    44 29 16 79.75

    30t sprocket X 26" 15t freewheel = 52
    Old age and treachery will overcome youth and skill!

  7. #7
    Truly Doneski
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    Cool bike, glad you liked it on the trails!

  8. #8
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    I guess what i also meant by "faster" was that I wasn't allowed to be a wimp. If I was going straight and level I had to take every opportunity to put the power down to build momentum for the next rise. There is no "i'll just kick 'er down a gear or two and take it easy"

  9. #9
    Bike Geek
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    Nice bike! Loving the paint job!

  10. #10
    ride more
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    Sweet looking bike, nice job.

  11. #11
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    those rampages are good tires i have been using them for a couple months now and flawless. pacific coast cycles is a good store. good old chuck will never steer you wrong.

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