PJD wrote:As far as power calculations for climbing various grades, a while back I set up a spreadsheet so I could use the various slope hills in my area, along with a drag force calculation as a sort of poor-boy dynamometer test.
The spreadsheet is attached. It provided actual motor performance graphs for a hub-motored bike, or it could be modified easily for a chain or reduction gear.
It gives the calculation results and both metric and US units, but the raw data has to be in US units, sorry.
The numbers entered on it representing the actual performance on my e-max.
That's a fascinating spreadsheet, PJD. What I find interesting is comparing Row 12 with Row 16.
You have halved (approx) the speed and EVEN though it's doubled the slope, you use 60% of the power!!!
SLOWING DOWN ON THE CLIMB is the way to go.
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