Old 03-24-23, 09:17 AM
  #74  
longpete
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Originally Posted by merlinextraligh
1) Tandems aren’t slower uphill than singles, for the same w/kg of the riders.

2) why would a tandem have more rolling resistance than two single bikes. Given equal tires, and proper inflation rolling resistance is going to be a function of weight. If anything carrying the same weight on 2 tires versus 4 would reduce not increase rolling resistance
"read : https://www.bicyclerollingresistance.../crr-load-test

Conclusion

Our simple conclusion is that the CRR of bicycle tires under different loads is non-linear and increases at higher loads.Our CRR at different speeds tests also showed us that CRR increases at higher speeds. When we combine the load and speed test results, we can conclude that the simple formulas used to calculate the total rolling resistance from the CRR value of a (bicycle) tire need corrections for the non-linear response under different loads, speeds, and air pressures."

Finally proof for something I felt since I started to ride a tandem. On tandem rolling resistance is higher : "CRR of bicycle tires under different loads is non-linear and increases at higher loads"
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