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Conference noted::bicycle

Title: Bicycling
Notice:Bicycling for Fun
Moderator:JAMIN::WASSER
Created:Mon Apr 14 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3214
Total number of notes:31946

2835.0. "kevlar tire vs regular" by CVG::MONTIVIRDI () Thu Aug 25 1994 16:12

    
    	What are the advantages to having a tire with kevlar as
    	opposed to a regular tire.  I'm looking for some new 
    	tires for my hybrid bike.
    
    	VMM
    
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2835.1WMOIS::GIROUARD_CThu Aug 25 1994 16:235
     Small arms fire won't penetrate the tire unless it's coated
     with teflon, of course... :-)
    
     Okay, the Kevlar will make the tire a little less subject
     to punctures.
2835.2Kevlar is okLUDWIG::ASMITHThu Aug 25 1994 16:332
    It also makes the tire easier to mount, this is important is you're
    fixing a tire while a pack skeeters are repasting on you.
2835.3Kevlar bead, kevlar casing, or both?DECRAL::BODGEAndy BodgeThu Aug 25 1994 16:497
A tire with a Kevlar bead (instead of wire) is foldable and a little easier
to install on the rim.

If it has Kevlar in the casing (instead of cotton? or other fabric), it will 
resist punctures and pothole damage better.  This is what is of primary 
importance to me - I seem to kill regular tires through sidewall damage well
before the tread wears out.
2835.4too centsODIXIE::CIAROCHIOne Less DogThu Aug 25 1994 18:4225
    I switched from normal tire w/thorn proof tubes to kevlar tire with
    normal tubes.  About the same weight.
    
    The kevlar resists puncture very well - it took the nail about two
    miles to get through the belt this morning.  The guy mentioning the
    'skeeters musta seen me on the side of the road this morning.
    
    Fence staples do not seem to go through - however, the tube will go
    flat a day or two after I pull the damn thing out.  Normal tires went
    flat instantly.  Even when I get a puncture, it's usually a slow leak
    because the belt is protecting the tube.
    
    The moral is that I am now going to go with kevlar belt and thorn proof
    tubes, which combination will outweigh the rest of the bike.  I like
    the durability, for sure.  I'm using Performance AT/XK 26X1.9 tires,
    and keep them at about 65 lbs. They work well for an obviously hard
    commute.
    
    I'll probably want to break down and get a couple rims with street
    slicks mounted for when I wanna gofast.  Best I've ever gotten out of
    this setup is about 38, and that was trying pretty hard in good
    conditions.  Cruise on the flat is about 24.
    
    Later,
    	   Mike
2835.5MSBCS::BROWN_LThu Aug 25 1994 20:093
    My experience has been the same as .3 with sidewall punctures, so
    I stopped using them (Kevlar belted).  I haven't noticed an increase
    in the number of "normal" punctures as of yet.  kb
2835.6NOVA::FISHERTay-unned, rey-usted, rey-adyThu Aug 25 1994 21:1611
    A Kevlar belt would be under the tread and would protect a little
    better against thorns and little bits of glass.  Tires so equipped
    will instead die of torn sidewalls.
    
    Last March I was riding with a fellow who had Mr TUffy's inside his
    tires protecting his tubes.  When he got a flat we found a v-shaped cut
    in hise tube.  THe only thing we found that could have caused it was
    that the Mr Tuffy had a matching tear in its edge.  MT had caused the
    the flat.  :-)  We removed the MT and put in a new tube.
    
    ed