Nylon composite vs. old nylon soles
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  1. #1
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    Nylon composite vs. old nylon soles

    A long time ago I had Shimano Sh-R072Y and I used to get really painful hotspots above the cleat after about 3.5-4 hours. These shoes are entry level from the very early 2000s so I'm assuming they have no fiberglass or carbon in them. >> http://www.cambriabike.com/shopexd.asp?id=39385

    I've already searched the forums about this so, how do you think the sole specifically on the Northwave Vertigo compares to plain old nylon? Everything else constant, could I get more than 4 hours? >>http://www.northwave.com/world/shoes...atid=1&area=1#

    Northwave says "nylon filled with fiberglass and enriched with carbon powder."

  2. #2
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    I can't comment on those shoes, but "enriched with carbon powder" sounds like marketing gibberish to me. Long fibers of carbon embedded in a plastic matrix make it more rigid because they resist stretching. I can't imagine that carbon powder would have any such functional benefit.

  3. #3
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    reinforcement

    Quote Originally Posted by everythingeverywhere
    A long time ago I had Shimano Sh-R072Y and I used to get really painful hotspots above the cleat after about 3.5-4 hours. These shoes are entry level from the very early 2000s so I'm assuming they have no fiberglass or carbon in them. >> http://www.cambriabike.com/shopexd.asp?id=39385

    I've already searched the forums about this so, how do you think the sole specifically on the Northwave Vertigo compares to plain old nylon? Everything else constant, could I get more than 4 hours? >>http://www.northwave.com/world/shoes...atid=1&area=1#

    Northwave says "nylon filled with fiberglass and enriched with carbon powder."
    I agree with the other poster that "carbon powder" sounds like marketing BS. Have not looked at these shoes but I do own a pair of DMTs that are fiberglass reinforced and they are noticeably stiffer than any Nylon soled shoes I've owned. I go back and forth between them and some carbon-soled Diadoras and I don't feel much difference

  4. #4
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    It seems like the spd slots cut out of your old Shimano shoes would make the sole around the cleat a lot less stiff and contribute to hot spots. Plus, they look brutally hot. Hard to see how the Northwaves wouldn't be an improvement.

  5. #5
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    Carbon filler

    Quote Originally Posted by JCavilia
    I can't comment on those shoes, but "enriched with carbon powder" sounds like marketing gibberish to me. Long fibers of carbon embedded in a plastic matrix make it more rigid because they resist stretching. I can't imagine that carbon powder would have any such functional benefit.
    Actually, fillers do make plastics stiffer. Carbon filler might be better than other fillers because you can surface activate the carbon and get better bonding to the plastic. That said, carbon fiber has a much greater effect than carbon powder.

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