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  1. Replies
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    There are shorts made specifically for recumbent...

    There are shorts made specifically for recumbent riding, that have no padding.
    They look just like normal bicycle lycra shorts but only have an extra layer of lycra where the pad would normally be.
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    1,186

    Yea but no. Teflon moving against Teflon (like,...

    Yea but no.
    Teflon moving against Teflon (like, in a volume of Teflon powder) has LOWER friction than two lubricated steel parts sliding across each other. Even dry, the Teflon is still less...
  3. Replies
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    1,186

    This wikipedia article has a chart that shows...

    This wikipedia article has a chart that shows that the coefficient of friction between teflon-on-teflon (dry) is one-fourth that of lubricated steel on steel. Friction - Wikipedia, the free...
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    1,186

    Not bicycle-specific, but anyway: 1) Get hubs...

    Not bicycle-specific, but anyway:
    1) Get hubs that use cartridge bearings.
    2) Remove the bearings.
    3) Order a set of sealed replacement bearings that is either A) stainless, B) hybrid or C)...
  5. Replies
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    1,250

    There is really three kinds of bicycle tire beads...

    There is really three kinds of bicycle tire beads now:
    1) wire
    2) textile
    3) cable.
    The Sheldon page only shows the first two.

    1) Wire beads are the vintage style that is very stiff. These...
  6. Replies
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    Yea but the rubber is there to protect the...

    Yea but the rubber is there to protect the casing....

    If you can pinch the deflated tire and see exposed threads at the bottom of any of the cracks, then it should be replaced.
    The reason is...
  7. Thread: "Taxi" bike?

    by Doug5150
    Replies
    20
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    731

    An xtracycle with the foot platforms would be...

    An xtracycle with the foot platforms would be most-ideal, I'd suggest. Or you could build something similar if you had the means.

    In Europe a common style of child seat is one that attaches to the...
  8. Replies
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    I dunno about that.... The most reliable way...

    I dunno about that....

    The most reliable way to prevent tire punctures is to just use thicker rubber. That comes with a couple other penalties tho (weight and rolling resistance).

    ------
    ...
  9. Replies
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    3,420

    AFAIK, the IHPVA people aren't switching to...

    AFAIK, the IHPVA people aren't switching to tubeless en masse. They would already be all using it if there was a reason to bother.

    And here is another different tire testing site that claims (as...
  10. Replies
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    Non-pneumatic tires aren't new; that's all there...

    Non-pneumatic tires aren't new; that's all there was originally.....?


    I've not used or rode any myself. Are you using them?

    Most reports of users that I find online are that road tubeless a...
  11. Replies
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    Get two different locks (like a U-lock and a...

    Get two different locks (like a U-lock and a chain, with different-style keys) and use them both. Then your bike is 2X as difficult to steal as all the other ones around.

    ------

    Interesting...
  12. Replies
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    I've seen industrial references (not...

    I've seen industrial references (not bicycle-related) that plainly state that if a composite part fractures, it's ruined and should be replaced. There is no way to effectively repair it.

    The...
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    No, that would be the air bags....

    No, that would be the air bags....
  14. Replies
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    3,236

    The main things I dislike about typical external...

    The main things I dislike about typical external bicycle gears is that they are still very crude designs with a couple major shortcomings.
    First is that the arrangement of forward sprockets and rear...
  15. The 'usual' way I've heard of to remove tire...

    The 'usual' way I've heard of to remove tire markings like this is to use an oscillating sanding tool with fine sandpaper and very light pressure. It is a risky operation, as many bicycle tires don't...
  16. Replies
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    The Man Who Rode to the Moon (and back) (twice) |...

    The Man Who Rode to the Moon (and back) (twice) | Miles 4 Melanoma

    You don't get to brag until you beat Freddie.
  17. Replies
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    Sorry but you can't get light & fast &

    Sorry but you can't get light & fast & <$1000. at least new.

    With recumbents, there is a WIDE variety in cruising speeds for the same rider effort, due to the fact that some recumbents have you...
  18. What tires were these, and when was this? I am...

    What tires were these, and when was this?
    I am curious because now even the cheap bike tires at Wal-Mart come folded up into little boxes, and they have no such warnings on them.
    The beads of...
  19. Are these the Iodine or Cobalt wheels? If so,...

    Are these the Iodine or Cobalt wheels?
    If so, you might want to stick to using either tubeless-only tires, or to using only steel-bead tires then.

    In the cross-section diagram on the page...
  20. Replies
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    Or one could email a photo of the damaged tire to...

    Or one could email a photo of the damaged tire to the manufacturer, and ask their opinion--since they would presumably be the technical authority on the matter.

    If bad tires are getting out the...
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    It's not wise. I would be willing to wager that...

    It's not wise.
    I would be willing to wager that no tire company (of any kind!) would tell you to keep using any tire that has casing threads exposed.

    The entire issue of "skinwall" bicycle tires...
  22. Does not sound as if the tires were incorrect for...

    Does not sound as if the tires were incorrect for the rim width.... And the tube size shouldn't matter, being contained inside the tire.
    Exactly what model of Ultremo was it? some have steel beads...
  23. Replies
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    Returning it to the manufacturer is more hassle,...

    Returning it to the manufacturer is more hassle, but it depends on how helpful you want to be to the tire manufacturer.
    They may be willing to send you the prepaid shipping label, and they will be...
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    The tire is ruined and should be returned. ...

    The tire is ruined and should be returned.
    Preferably all the way to the manufacturer, since the overprinting indicates that it got out of the factory that way.

    You might contact the...
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    Warning: opinions ahead.... There is three...

    Warning: opinions ahead....

    There is three main problems with department-store bicycles.
    1) the frames usually don't come in a range of sizes, and usually the only size is for an early-teenager....
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