nemienim zachadzat do detailov, ale chcem vidiet, ako 60tpi
plast ma lepsiu odolnost proti trnom, ako 120tpi
Ach jaj .. kedy konecne zmizne ten urban legend z cyklistickych for
..
http://www.sheldonbrown.com/tires.htmlThe higher the TPI number, the thinner and more flexible the tire fabric is. Thin-wall (high TPI) tires tend to be lighter and have lower rolling resistance, but they're more easily damaged by road hazards.
http://www.moruyabicycles.com.au/contents/en-uk/d713.htmlLower TPI tyres have thicker cloth and the gaps between the threads are bigger. These take on more rubber as the tyre is made, making a heavier tyre but with sturdy, abrasion resistant sidewalls. A low TPI count is good for a downhill tyre.
Higher TPI tyres take less rubber to fill the gaps so give a lighter tyre with lower rolling resistance as a result of having more flexible (thinner) sidewalls. Also the smaller gaps between the threads make it harder for a thorn to penetrate the casing. For racing, touring, or any performance oriented tyre, a high TPI count is good.
http://www.maxxis.com/Bicycle/Maxxis-International-Bicycle-FAQs.aspxWhat does TPI stand for?
Answer:
TPI stands for threads per Inch. It defines the number of threads contained in one inch of the tire casing. The lower the number of TPI, the larger the gauge cords in the casing. Thus, the more durable the tire becomes. The higher the TPI, the more lightweight the tire becomes and the more supple the ride of the tire. The majority of our tires are 60 TPI, and our race tires are 120 TPI.
http://answers.yahoo.com/question/index?qid=20070228093427AAujvKW1) Higher TPI numbers mean thinner fibers, and a lighter tire that is sometimes more prone to puncture, not the other way around. A tire, while it looks like it's made of rubber, is actually constructed primarily of cloth. Cloth fabric is woven between the two beads to form the body or "carcass" of the tire and determines its shape. The fabric threads are arranged in layers or "plies" of parallel threads. Some tires use thick thread, some use thin thread for the fabric. The higher the TPI (Threads Per Inch) number, the thinner and more flexible the tire fabric is. Thin-wall (high TPI) tires tend to be lighter and have lower rolling resistance, but they're more easily damaged by road hazards.
A najdolezitejsie:
http://forums.roadbikereview.com/showthread.php?t=242753Different companies measure TPI different ways and it's not the only factor so the above info only applies as a general rule of thumb.