Bicycle thread

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

  1. Chillis

    Chillis Long timer

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    Such an awesome road!

    Do you live in the area? I bet that is biking heaven.

    When I have been there it has always been for motorcycling and that is one of a couple of places in the US that immediately made me fall in love.

    I remember spanking the heck out of a guy on a Road Star Warrior on my DR650 going down that road.
  2. pierce

    pierce Aven'Tourer

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    I lived in Pacific Grove, and Monterey from 1977 to 1987. been in Santa Cruz ever since. I was doing a lot more bicycling when I was down there (was in my mid 20s to early 30s).


    re: tire inflations, unless you're running extra thin (or latex) inner tubes, your tires should hold air better than that, unless you have a pinhole leak or a leaky valve stem.
  3. neanderthal

    neanderthal globeriding wannabe

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    I had two flats the first time I rode my bike, one, then the other about 15 minutes later. I was about a quarter mile from a bike store, so I went and bought myself a tube, installed it, and kept riding.

    The second flat tire inspired me to get a tougher tube, so when i walked into the bike store for the second time that's what I asked for. Something puncture resistant. He didn't have anything quite like what I asked for, but he had some cheap Chinese tubes that he stocked. Thick rubber. "Poor quality" he says.
    I took one and rode my bike with no punctures for a week. I went back and got two more a week later. I also added Continental GatorSkin tires. That was ~5 years ago

    I only just suffered my first flat tire last week. :evil
  4. Ridge

    Ridge Jitenshado

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    heehee... got a good chuckle from these posts... :lol3

    Finished 9th in the single speed category of my 35 mile P2P race this past Saturday. Had I not taken the last two weeks off of my cycling completely, I feel I could have finished much better. Considering the level of talent that showed up for the race, I'm happy with top ten.

    I'm glad I decided to put the 20T cog on the rear!:huh

    <iframe height='405' width='590' frameborder='0' allowtransparency='true' scrolling='no' src='http://app.strava.com/runs/25574229/embed/75926d02786f1a2d13594e26d7c27b4d7f6f5440'></iframe>
  5. Gummee!

    Gummee! That's MR. Toothless

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    I'll grant you its scary. ...but its NOT an automatic crash like is implied. :nono

    AND

    Think about it for a bit: where's the most weight on a bicycle? Over the rear wheel. Right?

    Where's the majority of your flats? Betcha its the rear wheel again.

    Why? Just like on the moto, the front tire kicks up whatever it is and the rear wheel rolls over it. :nod S'why there's something like 70/30 rr/ft flats on both motos and bicycles. Maybe even 80/20.

    So... while Sheldon was a fart smeller, there's some things he spouts off about (and people believe) that need thinking about to see whether he's talking out his ass or not. :nod

    I will say that if you wait too long and the rear tires seriously squared off, it get fun to turn in. Takes a little effort to get the tire off the square section and onto the side of the tread. AMHIK Is it dangerous? Not if you're a half decent bike handler. :nah

    M
  6. Aurelius

    Aurelius Long timer

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    How did you manage to display the image like that? Is it linked to Strava's website? :ear
  7. Ridge

    Ridge Jitenshado

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    Just click the share button on your activity and use the "embed in blog" code.
  8. ducnut

    ducnut Long timer

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    My Conti Contact are directional. I noticed no difference in feeling, when flipped. I do, however, notice the flattening of the profile, but, it's a bicycle. I'd rather ride than worry about the small stuff.

    BTW, I used to flip my rear Michelin slick, at the track. They're a "0" degree construction. At tracks like Barber and Mid-Ohio, one side wears faster than the other.

    ^^^ +1

    WOW! :lol3
  9. Aurelius

    Aurelius Long timer

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    Let's see if this works....

    <iframe height='405' width='590' frameborder='0' allowtransparency='true' scrolling='no' src='http://app.strava.com/runs/25589740/embed/f8a7506843adcbd712eb271281a06fb4804375c4'></iframe>
  10. ducnut

    ducnut Long timer

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    Yeah, but, rolling a tubular off the rim is totally different than a blowout. In over 30 years of riding, I've never had a blowout. I'll continue to rotate my tires, to get the most out of my equipment, and leave the safety-nazi crap to the internet.

    Well, the LBS is selling inaccurate advice. There's a good article here. I don't believe everything I read, but, I did try this one, while I was competing in time-trials. I definitely picked up speed and experienced a much smoother ride, when reducing pressures. There was noticably less slowing over chattery, chip and seal surfaces. Also, when you inflate to such high pressures, you're stretching the rubber of the tube. Bicycle tubes are naturally thin to reduce weight and rolling resistance. The more stretch, the more air that seeps through that membrane. And, you should be checking your tires, before every ride. You'll get better wear and more likely to find a tire problem, pre-ride.

    My GF and I, both, run 32mm tires. I had a local, who's considered to be the "go-to guy" around here (he runs 23mm on everything, including his tandem), question our tire sizes and saying how they must feel really slow. When I explained that we ride whatever roads we feel like turning down and that we ride a lot of dirt and gravel, he shook his head and said "Not for me.". We broke his draft, when we took off.

    What one has to realize is that there's going to be so many square inches of contact patch on the ground, based on the weight carried. In a narrow tire, that contact patch is going to be long and narrow. Conversely, a wider tire's patch is going to be shorter and wider. The narrower tire's longer patch flexes a longer portion of the sidewall, which decreases efficiency. Sidewalls are purposely made thin to allow for easier flex and better efficiency. Even so, there's a whole lot of rolling resistance in all that sidewall flex. I don't know at which point aero trumps sidewall flex in tire width, but, I'm not going to get that worried about it. For me, I'm fast enough, I go down whatever road looks intriguing, and I'm having a great time doing it. I'll leave the skinny-tired types to battle the traffic, on the asphalt.

    BTW, I'm moving up to 37mm or 38mm, on the next set of tires. A bunch of new stuff just hit the market, so I'm still undecided.
  11. Ridge

    Ridge Jitenshado

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    Good stuff Ducnut. I've switched all of my race tires over to the Conti GP4000 all season in a 700x25. I also used to swear by 23's but quickly found myself as a convert after borrowing a teammate's bike for a mixed surface race. I'm also the only guy on my team that runs latex tubes in every set of tires. The road feel is simply improved in every way from butyl rubber tubes. They require a bit more attentiveness to air pressure and need topping off more often, but well worth the extra time for the feedback and feel.

    Sent from my intergalactic space modulator using tapatalk
  12. ducnut

    ducnut Long timer

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    I'm exploring the tubeless option, for the same reasons, after feeling the difference on my MTB.

    And, I managed to squeeze a 28mm, into my GF's road bike. She's not going back to the 23s. But, after getting a 'cross bike, she never rides her road bike, anyway. Funny, how that worked; get a more all-'rounder bike and enjoy cycling even more.
  13. rbrsddn

    rbrsddn 3banger

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    I've been running Tubeless since June, and don't think I'll ever go back to tubes. Running Hutch Fusion 3's, 23mm at 85 F and 90 R. The ride is awesome.:deal
  14. Ridge

    Ridge Jitenshado

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    The last set of wheels I had built for my CAAD are Stan's Alpha Pro rims. I want to run them tubeless, but have just not found a true tubeless road tire I like. The Hutchinson Atoms are 300g each... without adding the sealant. My Conti GP4000 all seasons with latex tubes are only 240g each. I'm not adding almost a half pound in rotating weight to try tubeless just yet. On my mountain bike, I don't care as much about that weight but it makes a discernible difference on the road bike.
  15. YakSpout

    YakSpout Obstacle Allusion

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    Ah, gotcha. Did you hit something when the tubes went flat or did they just let go on a smooth section?

    I check pressure before every ride. I usually lose about 5-8psi per day until they stabilize at about 80psi after a couple days.
  16. fullmonte

    fullmonte Reformed Kneedragger

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    I have been running the Fusions for over a year and really like them too. Never had a rear last 2500 miles until now. My brother, who puts in the big miles, put me onto them.
  17. k7

    k7 Ancien cyclist

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    Hit a rock yesterday - got a flat. Dammit. :lol3

    Ran a camera for the first time ever - almost took out a little dog on a long leash. I'll figure out how to slice and dice it later and try to post that segment. :evil
  18. pierce

    pierce Aven'Tourer

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    in the collection of old bike tires and other odd parts I recently dumped on the local Bike Church collective, was a pair of skinny road tubes that were clear yellow but NOT latex, they appeared to be some sort of high tech rubber. I vaguely remember getting these on my road bike in the late 80s, but I'll be darned if I can remember what they were. they were very light, held air well, and were rather puncture resistant, but very difficult to patch (standard patch kits didn't stick to them).

    Anyone remember what these were? My mind is aware, but my body forgets. :gerg
  19. Mr Head

    Mr Head PowerPoint ADV

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    I remember those, but not the name. They are not rubber for sure, the patching issue probably killed them.
  20. Chillis

    Chillis Long timer

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    You know, it was just one flat on this bike. The last bike got tiny thorns in the tire and I went through a couple tubes before finding those little bastards.

    Current bike I hit a rock and it caused a pinch against the rim on a heavy duty tube.

    I switched out my rear for the new 25 tire and a fresh tube. Just turned my front wheel around to even out the wear.

    The tag on the tire says to run Max psi for my weight 178lbs, 116psi.

    After going through this new tire I will go for the chubby girls for that cushier ride and less chance of pinching.