The 11-27 Project

With the hills in Wisconsin coming soon (despite my doubts, it looks more and more like it’s going to happen) as well as some more hilly rides that I have scheduled, I’m looking at swapping out my current cassette (11-23) with something with a little bigger. Shimano doesn’t make an 11-27 cassette for whatever reason, and I’d like to not have to use a 12-27 if I can avoid it because I do end up using that 11t cog quite a bit when I’m going downhill.

So… I think I’m going to try and piece together half of my 11-23 cassette with a new 12-27 cassette and have the mother of all cassettes that will get me up and down anything that I’ll be riding on. I’ve read this is doesn’t work all that well for 9-speed setups, but that 10-speed setups spread things out just enough so the gaps aren’t too large and shifting is still smooth. I suppose the worst case scenerio is that I’ll use the 12-27 and just won’t have that extra gear to hammer with downhill. Certainly whatever cassette I have on for Wisconsin, you can be rest assured that I’m going to use every single gear that I have on the back at some time over that course.

Not much else to report. I ran early this morning before it got too hot. It’s amazing how much faster I can run when it’s 20 degrees cooler out! I think I clipped off my first mile at 7:45 pace and my HR barely got over 140. On my death run on Tuesday, my HR was pushing 160+ and I was probably barely under 10 min/mi pace. The last two days have also included a pair of 30 mile rides. Tomorrow it’s another day of masters and probably another 30/3 brick. Then it’s another five hour ride on Saturday. Only four more of those to go. Yikes! We’re getting close…

10 Responses to The 11-27 Project »»


Comments

  1. Sheldon Brown has some pretty interesting info. concerning custom cassettes on his website:

    http://www.sheldonbrown.com/k7.html

    Check it out and good luck!

    Comment by Flatman | 2005/07/22 at 08:34:29
  2. I hear you on the run in the cooler temps! I just got back from my run and was significantly faster than when I tried to pull off the same thing last week during midday. Totally in awe of your bike tech ability, too. If I tried to mess with things like that I’d have a zero speed bike. One of these days I’ll get it all figured out ;)

    Comment by wil | 2005/07/22 at 10:01:57
  3. I second Wil regarding your bike tech knowledge. As a solo rider on his first road bike (bought in March) its hard to pick up on things like that, though I think that’s what I should have done when buying my first bike.

    Comment by tarheeltri | 2005/07/22 at 10:26:59
  4. Good luck with the cassette — I don’t know much about bike technology (that’s what my hubby is for), but I have noticed that he changes out the cassette on my bike depending on it I’m racing, if it’s flat, etc. So, you must know what you’re doing.

    That said, I’m relieve that others have experienced the same heat issues I have. Makes me feel a little more “normal.”

    Comment by Heather | 2005/07/22 at 12:44:03
  5. I shouldn’t even be let on a bike given my complete lack of knowledge. I’ll be interested in what comes of it, though.

    This heat training is probably better than speedwork to help you get faster on the run!

    Comment by jessie | 2005/07/22 at 14:34:09
  6. ooohh, a project, a bike project, oooohhh, a bike project with a cool code name ‘11-27′, we code named a project at work once ‘Project 007′ and everyone wanted to work on it (the decision maker’s last name was Fleming)…

    a bike project, with a cool code-name, and not my bike… this sounds like an away-mission.

    count me in, we’ll need some gear though: topographic data on the Wisconsin bike course (including a landing zone to drop the selected gear), detailed specs on what you’ve got up-front (53-39 crankset?), we’ll need to wisk you off to a secret laboratory in Colorado Springs and test your wattage, and a carton of fig newtons (i get hungry on away missions).

    Comment by Bolder | 2005/07/22 at 16:30:56
  7. Did cobbling together 2 cogwheels work? I thought they were computer-designed to work as a set. But I don’t know much about them. I think I want to set up a new rear wheel if I do Columbia next year - way too hilly for the gearing that I have! Either that, or I’m just a hill wimp.

    Comment by Nancy Toby | 2005/07/25 at 10:25:23
  8. The jury is still out… I haven’t actually bought the 12-27 that I need to do the project. :) I’ll let you know when I have a chance to test it out, though.

    Comment by Chris | 2005/07/25 at 13:01:14
  9. I have a shimano compact crank on my bicycle and want to modify a 12-25 freewheel for 11-25 by removing the 16t cog (it is the most logical one to remove if adding an 11t cog and is separate) and adding a 11t cog. http://www.excelsports.com lists a 11t cog and lockring for it. the combination costs $26.00 plus shipping. I purchased a new 7800 (cassette) 28 spoke hub so that I can replace my 7400 hub(freewheel) and will need to re-lace my rear wheel and purchase the bar-end shifters and chain before I can try this change.

    Comment by Louis | 2007/11/03 at 17:09:24
  10. very interesting, but I don’t agree with you
    Idetrorce

    Comment by Idetrorce | 2007/12/15 at 17:26:35

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