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    How much weight can bike hold?

    I weigh 270 lbs. Can I ride the average road bike? I just got a used Peugot with a 301 frame. I put new 1 1/4" tires on it rated for 90lbs or air and new inner tubes. Can that hold me?

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    Burning Matches. ElJamoquio's Avatar
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    Probably want a little more air pressure. On the other hand, as long as you're not pinch-flatting, you're OK as is.
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    Senior Member big john's Avatar
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    Just check your wheels regularly. Squeeze the spokes a little and see if any of them are coming loose. Also, if you clean the frame and fork you can check for cracks. How old is your bike?

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    Hi,
    The bike looks like it might be about 10 years old.

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    Quote Originally Posted by ElJamoquio View Post
    Probably want a little more air pressure. On the other hand, as long as you're not pinch-flatting, you're OK as is.
    Hi,
    If the tires are rated for 90psi, should I exceed that? What's "pinch-flatting?"

  6. #6
    Lotion/Basket/Hose Doctor Who's Avatar
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    Quote Originally Posted by TomBrooklyn View Post
    Hi,
    If the tires are rated for 90psi, should I exceed that? What's "pinch-flatting?"


    No, don't exceed the 90 PSI. That's the air-pressure limit for the tire itself, not the weight limit for the tire.

    Anyway, that bike should be fine to ride on, as-is. You're going to need to keep an eye on the wheels, as they're much more likely to come untrued (i.e. lose their 'straightness') with a heavier rider on them. The frame, fork and all other parts should be fine, just so long as they're all in good shape.

    You might find better answers in the 'Clydesdales/Athenas' section of this forum, which caters to cyclists that a bit bigger-boned than the norm.

  7. #7
    Burning Matches. ElJamoquio's Avatar
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    Quote Originally Posted by TomBrooklyn View Post
    Hi,
    If the tires are rated for 90psi, should I exceed that? What's "pinch-flatting?"
    From sheldonbrown.com:

    "Pinch Cuts result from hitting stones, curbs, or sharp edges of holes in the road surface. When the tire hits a sharp edge hard enough, it compresses so that it bottoms out. The inner tube can get pinched between the rock and the rim. Pinch cuts usually put two small holes in the tube. This type of damage is sometimes called a "snake bite" because the two holes look like the wound made by the fangs of a snake.

    Pinch cuts sometimes ruin tires as well as tubes, but usually the tire will not be damaged.

    The impact that causes a pinch cut can also make a dent or "blip" in your rim."

    Basically, the pneumatic pressure in your tires isn't enough to keep the rim from hitting the ground when you hit a pothole or something.

    I've never had a problem with taking the pressure to 10-20 psi above rated pressure, but I've always used brand new tires, as well. If you're on ten year old dry-rotted rubber, you may be SOL.
    Reacting is mind candy; it requires no thought. Thinking is tedious.

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  8. #8
    Time for a change. stapfam's Avatar
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    I ride a Tandem and the accepted rule is that you go 20psi above the max stated on the sidewall. On Tandems you also do not go to the narrowest tyre around so 1 1/4 tyres should be OK but go 10psi above the max printed on the sidewall. Weight of the Tandem is 400lbs all up so the tyres will take the weight. Someone said it already but get the wheles checked before you ride and keep an eye on spoke tension.
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  9. #9
    Senior Member ken cummings's Avatar
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    Well fitted tires can often go to twice the design pressure before blowing off of the rims. I saw something like that on the TV show "MythBusters". I worked with a woman who had blown her little daughters' tire off of its' rim when she hooked it up to a compressor at a gas station. For me much over 10 PSI above the stated design pressure results in a hard, uncomfortable ride.
    This space open

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    Quote Originally Posted by Doctor Who View Post
    You're going to need to keep an eye on the wheels, as they're much more likely to come untrued (i.e. lose their 'straightness') with a heavier rider on them.
    Will do.

    Quote Originally Posted by Doctor Who View Post
    The frame, fork and all other parts should be fine, just so long as they're all in good shape.
    As for the fork, I just noticed it's a little off already and I haven't even ridden the bike yet. It's a used bike. My local shop said they might be able to straighten them so I'll take it down there soon.

    Quote Originally Posted by Doctor Who View Post
    You might find better answers in the 'Clydesdales/Athenas' section of this forum, which caters to cyclists that a bit bigger-boned than the norm.
    Ha! I didn't notice that forum. I'll check it out. Cheers.

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    Quote Originally Posted by ElJamoquio View Post
    Basically, the pneumatic pressure in your tires isn't enough to keep the rim from hitting the ground when you hit a pothole or something.
    I'll see how it goes. If I bottom out the tires much, maybe I'll have to switch to a mountain bike. Those fat tires ought to hold me good.

    Quote Originally Posted by ElJamoquio View Post
    I've never had a problem with taking the pressure to 10-20 psi above rated pressure, but I've always used brand new tires, as well. If you're on ten year old dry-rotted rubber, you may be SOL.
    The tires were dry rotted. I bought two new ones and put new tubes in too. I'll try 100psi.

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