Posts Tagged ‘bicycle tires’
Specialized tire testing II
In search 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 testing Stellenbosch.
We know we have great tread patterns in the Fast Trak LK and The Captain, its a matter of making a strong, light, flexible casing. With an emphisis on STRONG.
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!
Specialized tire testing camp in Stellenbosch
Burry Stander doing rolling resistance testing on the rollers. He rode at 25km/h and at 35km/h with about 20 different tires and measured the wattage needed to hold those speeds for each tire. On the right (reading the power tap numbers) is Benno Willeit, our Specialized mechanic, and on the left is Tire Specialist Frank Stacey.
