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#31
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Tire recommedations needed
On 23 Mar, 20:53, John Forrest Tomlinson
wrote: On Mon, 23 Mar 2009 13:25:05 -0700 (PDT), Nick L Plate wrote: Tubular racing tyres are still patterned, *explain. Some are and some aren't. So thin treaded tyres have no pattern because there is no depth of rubber, that is why un patterned tread generally have lower rolling resistance on a steel roller, there is less rubber, therefore less milage on the road. TJ |
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#32
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Tire recommedations needed
On 25 Mar, 06:05, Nick L Plate wrote:
On 23 Mar, 20:53, John Forrest Tomlinson wrote: On Mon, 23 Mar 2009 13:25:05 -0700 (PDT), Nick L Plate wrote: Tubular racing tyres are still patterned, *explain. Some are and some aren't. So thin treaded tyres have no pattern because there is no depth of rubber, that is why un patterned tread generally have lower rolling resistance on a steel roller, there is less rubber, *therefore less milage on the road. With more punctures per mile. TJ |
#33
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Tire recommedations needed
On Mar 23, 3:25*pm, Nick L Plate wrote:
On 23 Mar, 19:42, landotter wrote: On Mar 23, 2:14*pm, Nick L Plate wrote: On 23 Mar, 18:22, landotter wrote: On Mar 23, 12:15*pm, WhiteTea wrote: On Mar 22, 9:36*am, wrote: Try the Specialized trisport, great tire for $18. http://www.specialized.com/bc/SBCEqP...=42216&eid=355 I don't care for the "slick" tires. You don't know how thick the rubber is compared to threaded tires. Why on earth do you need to have a worse gripping tire to satisfy your curiosity about the tread's current thickness? Are you a compulsive obsessive? Road tires need zero tread. Tread introduces squirm. Just ride until you can see the cords, or you start getting flats. Are not patterned treads used to reduce rolling resistance in thicker rubber? No. It's decorative if intended for road use. Its costly to produce the tooling (the mould) Tubular racing tyres are still patterned, *explain. It's branding, just as much as the piping on your jersey. The herringbone tread will quickly wear away down the center of such tires making them effectively slicks. |
#34
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Tire recommedations needed
On Mar 23, 12:22*pm, landotter wrote:
On Mar 23, 12:15*pm, WhiteTea wrote: On Mar 22, 9:36*am, wrote: Try the Specialized trisport, great tire for $18. http://www.specialized.com/bc/SBCEqP...=42216&eid=355 I don't care for the "slick" tires. You don't know how thick the rubber is compared to threaded tires. Why on earth do you need to have a worse gripping tire to satisfy your curiosity about the tread's current thickness? Are you a compulsive obsessive? Road tires need zero tread. Tread introduces squirm. Just ride until you can see the cords, or you start getting flats. I am praying for you brother. Andy |
#35
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Tire recommedations needed
On Mar 25, 11:25*am, WhiteTea wrote:
On Mar 23, 12:22*pm, landotter wrote: On Mar 23, 12:15*pm, WhiteTea wrote: On Mar 22, 9:36*am, wrote: Try the Specialized trisport, great tire for $18. http://www.specialized.com/bc/SBCEqP...=42216&eid=355 I don't care for the "slick" tires. You don't know how thick the rubber is compared to threaded tires. Why on earth do you need to have a worse gripping tire to satisfy your curiosity about the tread's current thickness? Are you a compulsive obsessive? Road tires need zero tread. Tread introduces squirm. Just ride until you can see the cords, or you start getting flats. I am praying for you brother. I thought you looked constipated! |
#36
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Tire recommedations needed
On 25 Mar, 17:57, Phil W Lee phil(at)lee-family(dot)me(dot)uk wrote:
Nick L Plate considered Tue, 24 Mar 2009 23:05:55 -0700 (PDT) the perfect time to write: On 23 Mar, 20:53, John Forrest Tomlinson wrote: On Mon, 23 Mar 2009 13:25:05 -0700 (PDT), Nick L Plate wrote: Tubular racing tyres are still patterned, *explain. Some are and some aren't. So thin treaded tyres have no pattern because there is no depth of rubber, No, they have no pattern because it works better. * * * * *that is why un patterned tread generally have lower rolling resistance on a steel roller, there is less rubber, *therefore less milage on the road. No, the extra resistance on a patterned tread comes mostly from the tread blocks moving around under load. This (among other things) causes them to wear faster, because they absorb more energy. The pattern picks up debris more than slick rubber, so without reinforcement, you get more punctures. The contact patch of a bicycle tyre is small enough that it IS the tread pattern. Racing tyres do not have tread blocks. Those tyres that have "blocks" do not quickly wear out the pattern. A thicker tread will almost always absorb more energy. That is the trade off with a long tread life. A racing tyre tread does not have vertical cuts in the tread, the pattern is at 45deg to the surface. It may take quite a while before the centre of a patterned racing type tread is worn in the centre, still providing the grippy patterned tread towards the edges for cornering. Considering the recent revelations that the rolling resistance tests showing wired-on tyres generally superior to tubular tyres were flawed inasmuch a swhile the w-o tyres were optimally mounted, the tubular tyres were mounted with thin inadequate layers of gum rather than a proper thickness of a hard cement. It certainly brings in doubt about the supposed superiority of unpatterned tread. Patterned treads definitely do have a directional bias, and if tested the wrong way round, will possibly produce an inferior result to an un-patterned tread. A supple casing and reasonable tyre width along with coservative pressure do much to improve road grip. In a lot of cases with wired-ons it is not desirable to lower tyre pressure for increased cornering grip in the wet because of the great risk of pinching the tyre edge either on a corner causing a fall or at any time causing a puncture. A short contact patch of tyre needs all the help it can get when there are puddles and/or algae to contend with. Can you point to good tyre tests, in the wet for cornering force comparing optimally mounted tyres at optimal pressures. I believe the 2-ply road racing tread tubular with latex tube will prove to be superior in cornering force in difficult conditions every time. TJ |
#37
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Tire recommedations needed
On Mar 26, 1:07*pm, Nick L Plate wrote:
On 25 Mar, 17:57, Phil W Lee phil(at)lee-family(dot)me(dot)uk wrote: Nick L Plate considered Tue, 24 Mar 2009 23:05:55 -0700 (PDT) the perfect time to write: On 23 Mar, 20:53, John Forrest Tomlinson wrote: On Mon, 23 Mar 2009 13:25:05 -0700 (PDT), Nick L Plate wrote: Tubular racing tyres are still patterned, *explain. Some are and some aren't. So thin treaded tyres have no pattern because there is no depth of rubber, No, they have no pattern because it works better. * * * * *that is why un patterned tread generally have lower rolling resistance on a steel roller, there is less rubber, *therefore less milage on the road. No, the extra resistance on a patterned tread comes mostly from the tread blocks moving around under load. This (among other things) causes them to wear faster, because they absorb more energy. The pattern picks up debris more than slick rubber, so without reinforcement, you get more punctures. The contact patch of a bicycle tyre is small enough that it IS the tread pattern. Racing tyres do not have tread blocks. *Those tyres that have "blocks" do not quickly wear out the pattern. *A thicker tread will almost always absorb more energy. *That is the trade off with a long tread life. *A racing tyre tread does not have vertical cuts in the tread, the pattern is at 45deg to the surface. *It may take quite a while before the centre of *a patterned racing type tread is worn in the centre, still providing the grippy patterned tread towards the edges for cornering. Bull**** alert. Tread on the road does zero to improve grip. |
#38
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Tire recommedations needed
On 26 Mar, 18:39, landotter wrote:
On Mar 26, 1:07*pm, Nick L Plate wrote: On 25 Mar, 17:57, Phil W Lee phil(at)lee-family(dot)me(dot)uk wrote: Nick L Plate considered Tue, 24 Mar 2009 23:05:55 -0700 (PDT) the perfect time to write: On 23 Mar, 20:53, John Forrest Tomlinson wrote: On Mon, 23 Mar 2009 13:25:05 -0700 (PDT), Nick L Plate wrote: Tubular racing tyres are still patterned, *explain. Some are and some aren't. So thin treaded tyres have no pattern because there is no depth of rubber, No, they have no pattern because it works better. * * * * *that is why un patterned tread generally have lower rolling resistance on a steel roller, there is less rubber, *therefore less milage on the road. No, the extra resistance on a patterned tread comes mostly from the tread blocks moving around under load. This (among other things) causes them to wear faster, because they absorb more energy. The pattern picks up debris more than slick rubber, so without reinforcement, you get more punctures. The contact patch of a bicycle tyre is small enough that it IS the tread pattern. Racing tyres do not have tread blocks. *Those tyres that have "blocks" do not quickly wear out the pattern. *A thicker tread will almost always absorb more energy. *That is the trade off with a long tread life. *A racing tyre tread does not have vertical cuts in the tread, the pattern is at 45deg to the surface. *It may take quite a while before the centre of *a patterned racing type tread is worn in the centre, still providing the grippy patterned tread towards the edges for cornering. Bull**** alert. Tread on the road does zero to improve grip. So point to some tests to prove that the unpatterned tread is superior to a racing tread in cornering grip for wet/algae conditions. Stop bull****ting! Road surfaces vary, only the patterned tread can cope with these variations. It is quite obvious when a rear tyre spins when climbing a wet hill, it is because there is no pattern on the tyre. This is an easy test to check the assumption you have on unpatterned tyres. Just swap your rear wheel with companion who has no grip troubles(he's using a patterned tread) climbing the hill, and experience the role reversal. TJ |
#39
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Tire recommedations needed
On Mar 26, 2:12*pm, Nick L Plate wrote:
On 26 Mar, 18:39, landotter wrote: On Mar 26, 1:07*pm, Nick L Plate wrote: On 25 Mar, 17:57, Phil W Lee phil(at)lee-family(dot)me(dot)uk wrote: Nick L Plate considered Tue, 24 Mar 2009 23:05:55 -0700 (PDT) the perfect time to write: On 23 Mar, 20:53, John Forrest Tomlinson wrote: On Mon, 23 Mar 2009 13:25:05 -0700 (PDT), Nick L Plate wrote: Tubular racing tyres are still patterned, *explain. Some are and some aren't. So thin treaded tyres have no pattern because there is no depth of rubber, No, they have no pattern because it works better. * * * * *that is why un patterned tread generally have lower rolling resistance on a steel roller, there is less rubber, *therefore less milage on the road. No, the extra resistance on a patterned tread comes mostly from the tread blocks moving around under load. This (among other things) causes them to wear faster, because they absorb more energy. The pattern picks up debris more than slick rubber, so without reinforcement, you get more punctures. The contact patch of a bicycle tyre is small enough that it IS the tread pattern. Racing tyres do not have tread blocks. *Those tyres that have "blocks" do not quickly wear out the pattern. *A thicker tread will almost always absorb more energy. *That is the trade off with a long tread life. *A racing tyre tread does not have vertical cuts in the tread, the pattern is at 45deg to the surface. *It may take quite a while before the centre of *a patterned racing type tread is worn in the centre, still providing the grippy patterned tread towards the edges for cornering. Bull**** alert. Tread on the road does zero to improve grip. So point to some tests to prove that the unpatterned tread is superior to a racing tread in cornering grip for wet/algae conditions. Stop bull****ting! *Road surfaces vary, only the patterned tread can cope with these variations. * Bull**** alert Pt. II. Unless you know of a road which is made of Formica or porcelain, you're talking out your ass. |
#40
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Tire recommedations needed
"landotter" wrote in message ... On Mar 26, 2:12 pm, Nick L Plate wrote: On 26 Mar, 18:39, landotter wrote: On Mar 26, 1:07 pm, Nick L Plate wrote: On 25 Mar, 17:57, Phil W Lee phil(at)lee-family(dot)me(dot)uk wrote: Nick L Plate considered Tue, 24 Mar 2009 23:05:55 -0700 (PDT) the perfect time to write: On 23 Mar, 20:53, John Forrest Tomlinson wrote: On Mon, 23 Mar 2009 13:25:05 -0700 (PDT), Nick L Plate wrote: Tubular racing tyres are still patterned, explain. Some are and some aren't. So thin treaded tyres have no pattern because there is no depth of rubber, No, they have no pattern because it works better. that is why un patterned tread generally have lower rolling resistance on a steel roller, there is less rubber, therefore less milage on the road. No, the extra resistance on a patterned tread comes mostly from the tread blocks moving around under load. This (among other things) causes them to wear faster, because they absorb more energy. The pattern picks up debris more than slick rubber, so without reinforcement, you get more punctures. The contact patch of a bicycle tyre is small enough that it IS the tread pattern. Racing tyres do not have tread blocks. Those tyres that have "blocks" do not quickly wear out the pattern. A thicker tread will almost always absorb more energy. That is the trade off with a long tread life. A racing tyre tread does not have vertical cuts in the tread, the pattern is at 45deg to the surface. It may take quite a while before the centre of a patterned racing type tread is worn in the centre, still providing the grippy patterned tread towards the edges for cornering. Bull**** alert. Tread on the road does zero to improve grip. So point to some tests to prove that the unpatterned tread is superior to a racing tread in cornering grip for wet/algae conditions. Stop bull****ting! Road surfaces vary, only the patterned tread can cope with these variations. Bull**** alert Pt. II. Unless you know of a road which is made of Formica or porcelain, you're talking out your ass. end of original text landlotter, Why would a Formica or porcelain (chosen because of smoothness?) surface make a difference in grip? If, as I understand it, a bicycle tire contact patch size and pressure prevent aquaplaning, it seems that a slick tire would be better on any paved road, regardless of how wet the surface is. Can't speak for the effects of algae, as don't think I've ever ridden atop them. Kerry |
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