Bicycle thread

Discussion in 'Sports' started by Zodiac, Jul 10, 2006.

  1. Mr Head

    Mr Head PowerPoint ADV

    Joined:
    Sep 21, 2003
    Oddometer:
    7,946
    Location:
    Orange County, CA
    Buy This Book First

  2. Gummee!

    Gummee! That's MR. Toothless

    Joined:
    May 13, 2004
    Oddometer:
    28,985
    Location:
    NoVA for now...
    Buy the book. Read the book. Screw things up. Fix em. Get better. Repeat till you're decent at it. Then stop riding for 6 years and forget all you know so you have to re-learn it.

    S'how I did it anyway.

    I build most of my own wheels. I'll accumulate hubs and then find rims for em. ...or vice versa... I still have a stack 12" deep of box-section tubular rims from my days of racing track. :augie

    M

    Edited to add: :205 d by Mr Head. Oh well.
  3. Gummee!

    Gummee! That's MR. Toothless

    Joined:
    May 13, 2004
    Oddometer:
    28,985
    Location:
    NoVA for now...
    I'm not sayin nuthin. Nope. Not a darn thing.

    BTDT more'n I can count.

    M
  4. Tripped1

    Tripped1 Likely Lost.

    Joined:
    Aug 6, 2009
    Oddometer:
    8,405
    Location:
    Nippon
    So because I would forget my ass if it wasn't attached I manged to ride 28 miles this morning.

    ......before I got to work so I could explain why I was three and a half hours late because I would forget my ass if it wasn't attached.

    I only live 6 miles from my door to the gate, I made that trip 4 1/2 times:huh Not my morning.
  5. Ridge

    Ridge Jitenshado

    Joined:
    Jul 25, 2006
    Oddometer:
    2,102
    Location:
    Open to suggestions
    Much grass, mee ameegos!
  6. Tripped1

    Tripped1 Likely Lost.

    Joined:
    Aug 6, 2009
    Oddometer:
    8,405
    Location:
    Nippon

    This is the story of my life here. :lol3
  7. Mr Head

    Mr Head PowerPoint ADV

    Joined:
    Sep 21, 2003
    Oddometer:
    7,946
    Location:
    Orange County, CA
    Yeah that read part is important. I did it while I was in engineering school. meant I studied the book more than casually read it as a how-to.

    There were a lot of pencil scribbles in my world then.

    I need to re-true that rear wheel of mine again. Those Roval wheels suck for staying in tune under my wide load. I broke one spoke a while ago and the replacement spoke is smaller in cross section. Wrong color too.
    Need to figure out how to fix that.
    My truing stand and offset tool are in some storage unit. I know nothing about how to find them. So, I'll have to wait for my wife to show me, and in the mean time use the bike.
  8. Gummee!

    Gummee! That's MR. Toothless

    Joined:
    May 13, 2004
    Oddometer:
    28,985
    Location:
    NoVA for now...
    fixt

    M
  9. zippy

    zippy Hinter dem Feld

    Joined:
    Dec 16, 2003
    Oddometer:
    2,328
    Location:
    St Pete
    amen on the 32/32. Although I bought mine with chris king hubs and had to learn to set the preload after the hubs loosened a bit. While I was intimidated by the thought the actual act was pretty damn easy.
  10. Gummee!

    Gummee! That's MR. Toothless

    Joined:
    May 13, 2004
    Oddometer:
    28,985
    Location:
    NoVA for now...
    90% of my riding is on 32/32 wheels. I have one set of 28/32 wheels I ride lots too. My opinon for training is 'more spokes is more better.' Durability, ease of repair, and durability all count more than aero or even weight **for training.** Yes, I typed durability twice on purpose. I have wheelsets older than some of the people I ride with!

    M
  11. ericm

    ericm Been here awhile

    Joined:
    Sep 12, 2002
    Oddometer:
    651
    Location:
    Santa Cruz Mountains, California
    You can make some measuring tools from two old (but straight) spokes. I cut mine so they are 250mm long to make the math easier.
    Thread on nipples until the end of the spoke is flush with the bottom of the slot. Loktite 'em on.
  12. soyanarchisto

    soyanarchisto Long timer

    Joined:
    Sep 1, 2005
    Oddometer:
    3,635
    Location:
    Sunny PDX
    I'm trying to figure out what I did wrong.

    Purchased a new road bike (cannondale supersix evo red) about a week ago. Aside from a 40-mile ride on Sunday, I've only been using it for my daily commute (10 miles round trip). So, right about 100 miles or so.

    Tuesday, I'm riding home and in the homestretch is a small incline. I am riding in my highest gear (i.e. big chain ring and smallest cog on my cassette), and push it over into the third cog on the rear cassette for the "hill." Still in my big chain ring. I pedal another block or so before I notice a guy up ahead that I want to try and catch, so I stand up on the pedals to sprint. As soon as I put some pressure on the pedals, "pop" the chain comes off the big chain ring to the inside (towards the frame) and over the handlebars I go.

    What did I do wrong?

    Again, its a brand new bike. I did NOT switch gears while standing on the pedals (made that mistake before). I've been riding for over 30 years (never competitively) and this has never happened before. The bike has some rash on the brake levers and the seat but is otherwise fine (I, on the other hand, have a broken collarbone and some road rash). Took it back to the shop to have it looked at and they cant find anything wrong.

    Thoughts? As you can imagine, I would like to avoid this happening again.
  13. rbrsddn

    rbrsddn 3banger

    Joined:
    Oct 31, 2006
    Oddometer:
    2,953
    Location:
    Madison,CT

    I'm not sure If your chain ended up on the BB shell, but if it did, take a look at this...I haven't crashed, but have thrown the chain... http://www.rei.com/product/670913/t...ferralID=8b3b59c8-f57a-11e2-a969-001b2166c2c0

    Good luck, and keep the rubber side down!
  14. Gummee!

    Gummee! That's MR. Toothless

    Joined:
    May 13, 2004
    Oddometer:
    28,985
    Location:
    NoVA for now...
    How heavy are you?

    My first guess is you torqued the frame/BB hard enough to cause a mis-shift in the front. Ask Mr Head about the old Vitus/Alan frames... They were notorious for that.

    After that: slightly loose BB or bearings migrating around in the shell.

    Otherwise? :dunno

    HTH

    M
  15. soyanarchisto

    soyanarchisto Long timer

    Joined:
    Sep 1, 2005
    Oddometer:
    3,635
    Location:
    Sunny PDX
    6'3" and about 195 or so.

    Guy at the shop tried to replicate it but couldnt. Cable stretch maybe?
  16. pierce

    pierce Aven'Tourer

    Joined:
    Jan 25, 2003
    Oddometer:
    10,123
    Location:
    S'Cruz
    Geez, you knew Spence of Cupertino Cyclery, too? I was a customer of his after he'd "retired" and then reopened a shop by the same name in Pacific Grove, out by Asilomar in the fog zone. :gerg

    I probably should have kept my last pair of tubular rims he'd tied and soldered for me. vintage NR hubs and all. those rims were light, strong, and fast.
  17. ericm

    ericm Been here awhile

    Joined:
    Sep 12, 2002
    Oddometer:
    651
    Location:
    Santa Cruz Mountains, California
    soyanarchisto- bummer about the collarbone.

    Is this an Sram bike? Could you have hit the shift paddle by accident as you stood? Sram takes very little lever travel to shift from the big ring to the small ring and the strong derailleur spring makes it happen fast when you trip it. I have had it shift all by itself but only in an extremely bumpy race (Copperoppolis for you NCNCA denizens). Not in normal riding.

    If the derailleur was out of adjustment from cable stretch you'd hear the chain rubbing on it. The rub would be worst in the smallest cog.


    My Vitus 979 would rub the chain on the derailleur but did not ghost shift even though it's a large frame.
  18. zouch

    zouch part-time wanderer

    Joined:
    Sep 17, 2002
    Oddometer:
    1,701
    Location:
    berkeley, CA USA
    yep; that's me now, too,...

    i've been through radially-spoked 24º Rolfs (harsh), and all the way down to 28º GEL280s (brilliantly smooth with Contis) and been able to make them all last fine. but the way i descend on my favorite (read: crappy) roads i just feel more at ease with something like my nice set of (lightly spoked) 3x 32º Open Pros these days.
    even the stuff i beat on on my CX/Fire Road bike is 32º, though they're on a 135mm OLD rear axle and are either an asymmetric rear rim, or 2x on the non-drive side. (keep in mind that like so many of us, i'm not the featherweight that i once was, and i was 'GS'sized to start with...)


    divide the (low) mileage i get in these days over all the bikes and multiple wheelsets that i do it on, factor in the quality of the the parts and builds, and it seems like the dang stuff lasts so long when done right to start with i never remember what i've learned about building wheels. considering that i don't do any building often enough to stay in good enough practice, these days, were i to need wheels, i'd get them from one of the skilled and well-practiced pro wheelbuilders around here.


    cheers!


  19. soyanarchisto

    soyanarchisto Long timer

    Joined:
    Sep 1, 2005
    Oddometer:
    3,635
    Location:
    Sunny PDX
    It is SRAM but I had earbuds in so didn't hear shit until my head hit the pavement.
  20. Gummee!

    Gummee! That's MR. Toothless

    Joined:
    May 13, 2004
    Oddometer:
    28,985
    Location:
    NoVA for now...