Bicycle thread

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

  1. zippy

    zippy Hinter dem Feld

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    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.
  2. Gummee!

    Gummee! That's MR. Toothless

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    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
  3. ericm

    ericm Been here awhile

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    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.
  4. soyanarchisto

    soyanarchisto Long timer

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    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.
  5. rbrsddn

    rbrsddn 3banger

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    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!
  6. Gummee!

    Gummee! That's MR. Toothless

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    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
  7. soyanarchisto

    soyanarchisto Long timer

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    6'3" and about 195 or so.

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

    pierce Aven'Tourer

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    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.
  9. ericm

    ericm Been here awhile

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    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.
  10. zouch

    zouch part-time wanderer

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    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!


  11. soyanarchisto

    soyanarchisto Long timer

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    It is SRAM but I had earbuds in so didn't hear shit until my head hit the pavement.
  12. Gummee!

    Gummee! That's MR. Toothless

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  13. Mercury264

    Mercury264 Once you go Triple...

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    Personally, I care less about the doping as much as I do how Armstrong was a complete c**t to anyone who challenged him on it. He ruined lives and for that I hope he rots in hell.
  14. Gummee!

    Gummee! That's MR. Toothless

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    That I can get behind. The doping thing? They were all doing it. Some more than others. Some better than others (more $$). When the govt said they were investigating LA, I figured he'd had to have pissed in someone's Wheaties to get em *that* mad at him.

    How LA gets hammered but other guys out there that did the same thing don't is :confused From the 84 Olympics (blood doping which was legal at the time. Unethical, but legal) to just a few years ago 'they all did that.' The 98 Tour positives are coming out and lots of people's livelihoods are now gone. At what point do you say 'enough!' ??

    The Secret Pro has something to say about that...

    Look at the performances from this years Tour. AC wasn't shooting up the mountains. Neither was Cuddles. Hollywood? (aka Voekler) At the back of the pack the whole time. Gilbert had a quiet Tour... There's questions gotta be asked but no one's asking em.

    M
  15. inyang

    inyang 5secs away

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    SRAM front derailluers do that at times.

    I suspect it has to do with the trimming, when you shift to the big ring, you may want to trim the shifter to move the chain a tiny bit outwards again.

    Has happened to me similar situation (SRAM Rival, slight incline, put down power, pop - but without the endo and bone rearrangement)

    Seen two more of such with friends that ride SRAM.
  16. Mercury264

    Mercury264 Once you go Triple...

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    Don't get me wrong, I don't condone ANY of it and just because 'they all did it' still doesn't make it right. What gets me is how Armstrong acted against others who questioned him (and what the Armstrong apologists conveniently forget). He literally ruined lives and I detest him for that.
  17. Mr Head

    Mr Head PowerPoint ADV

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    +1
    I need to build, (probably buy) a set of 32/32 for this Roubaix.
  18. Rider_WV

    Rider_WV Long timer

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    Cross bike is here!! I have to spoon on a new rear tire on the Vstrom, after that its bicycle time. Adjust everything to my liking, install pedals, etc then a shake down ride. I know it's probably blasphemy but I might mount the saddle off my mtb on it, the stock seat is not gonna jive with my sit bones. Probably order a selle anatomica Monday.

    I can't wait to go get it dirty:clap

    Might start gathering parts to build a full roadie over the winter, was eyeballing the scalpel 29ers too:lol3

    the list of things in this world that make me laugh and smile uncontrollably is short----->motorcycles, boobs, and bicycles, I need more of each:lol3
  19. Chisenhallw

    Chisenhallw Avowed Pussbag

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    Pics!
  20. Mr Head

    Mr Head PowerPoint ADV

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    I was in Denver, there were a few shops where you could learn stuff from real guys.
    They got fewer then none.:cry

    There is something about light filter through slightly dusty windows, reflecting off bicycle frames hanging overhead, combined with the smells of campy bearing grease, coffee, sweat, 50 year old wood floors, benches accompanied by the tink of wrenches and spokes from the back that really makes a great learning environment. :ear
    Riding in, learnign what's wrong and how to fix it and riding out after fixing it under a critical eye may not sell service orders, but it builds a relationship that sells bikes, components, tools and gear. That also helps to create another cyclist who tells friends and as a cyclist without even knowing it sits as an example to anyone watching. So, when he stops in the shade to tweak a spoke or help someone change a flat, or re-place a chain or just square up the gearing, by that example he moves the machinery a notch ahead.
    Unfortunately that didn't result in our old pro shops enduring. Part of that just goes down to the same way the family farm went. Kids off to college that the shop helped to pay for, but they got higher education and went off to engineering or doctors or the law.
    Or not. Who knows about that side of the question really? What did have a huge affect was first large chains buying up those mom & Pop pro shops then the big catalog houses going brick and mortar on a national level, aka Performance Bicycle Shops.
    I participated in a focus group study when they were coming into Denver. Everybody else on the panels were all people who knew each other from the cycling community, both racing and touring sides as I was associated with both.
    I don't think that was a bad thing, but the affect was that the small shops went away because they could not compete on price, and not enough people saw the value in the knowledge. The new "big box" shops didn't hire the old school folks. Much.
    A few of the old mechanics got work there. And for a while there were some large local shops that operated both like the big chains and the old pro shops. The best of both worlds. That eventually gave way to just a few big chain stores in a few locations. The local expertise died out. All that were left were a very few boutique shops.

    I think there has been a resurgence of sorts in the a few of the chains. At least that is my experience. a few large pro shops got on the train of a major brand shop and these at least where I've been have a few people who are those old school types that build relationships and spread the love of cycling.
    The musty old basements are gone, and the new shops reside in lower rent strip malls those old wood-floored buildings long ago converted to yuppy lofts/downtown trendy clubs/storefront homes/offices.
    What really matters are those cycling geezers in the making.