{"id":737,"date":"2009-04-02T16:54:35","date_gmt":"2009-04-02T14:54:35","guid":{"rendered":"https:\/\/www.conradstoltz.com\/specialized-tire-testing-ii\/"},"modified":"2009-04-02T16:54:35","modified_gmt":"2009-04-02T14:54:35","slug":"specialized-tire-testing-ii","status":"publish","type":"post","link":"https:\/\/www.conradstoltz.com\/index.php\/specialized-tire-testing-ii\/","title":{"rendered":"Specialized tire testing II"},"content":{"rendered":"

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In search\u00a0 of the holy rubber…<\/p>\n

Following up on earlier tire testing in Stellenbosch*, Specialized’s tire whiz guys came up with 5 new prototypes to test. The goal is to make a tire that is very puncture resistant, but still rolls well and doesnt weigh as much as a tractor tire.<\/p>\n

*Read earlier blog Tire testing Stellenbosch.<\/a><\/p>\n

We know we have great tread patterns in the Fast Trak LK and The Captain, its\u00a0 a matter of making\u00a0 a strong, light, flexible casing. With an emphisis on STRONG.<\/p>\n

Yesterday we tested rolling resistance of the 5 prototypes and also a few competitors’ tires. First I rode the rollers with a Power Tap and took Wattage outputs at 25km\/h and 35km\/h. Some tires needed 560 Watts to go 35km\/h, and with the cold legs, the unfamiliar rollers, and keeping the speed at exactly 35 at 1500m altitude took some huffing and puffing!<\/p>\n

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\"conrad-rollers.jpg\"<\/p>\n

After that I would ride to a gradual dirt climb, which I would ride at a fixed speed (20km\/h) and would take the average Wattage required to roll the tire at that speed. Repeat on the road at 22km\/h. Ride home, change tires, repeat.<\/p>\n

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Tire guru Frank Stacey carefully notes the details.<\/p>\n

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Chris Wyatt teaching me the tricks of installing rim tape the right way. Clean it with brake cleaner and flat screw driver…<\/p>\n

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Mike Taylor finishing up a quick wheel change before I jump back in the saddle. To push 500 plus Watts with cold legs…<\/p>\n

Today we will be testing durabilty and will be riding rocks.<\/p>\n","protected":false},"excerpt":{"rendered":"

In search\u00a0 of the holy rubber… Following up on earlier tire testing in Stellenbosch*, Specialized’s tire whiz guys came up with 5 new prototypes to test. The goal is to make a tire that is very puncture resistant, but still rolls well and doesnt weigh as much as a tractor tire. *Read earlier blog Tire […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[24,43,88,102],"tags":[258,341,1754,499,524,768,1806,1809,1144,1163],"yoast_head":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n