Need help filling information for Grin Calculator.

Slaphappygamer

Well-Known Member
Region
USA
City
Aptos
Hi everyone, I'm trying to use this tool, but I need help with some unknowns.

1 - How do I find out how many watts I produce while riding my bike? (It's a Ride1Up 700XR).

2 - I know my motor is a rear hub Shengyi, not sure of the model. It's only got "SY2248700CUL3030PS1" stamped on it. I'm pretty certain this means the motor is 22a @ 48v, for a 700c tire. I'd like to know more. What RPMs it runs at, what type of windings it has. Is even the 22a @ 48v the max, or is this continuous/nominal/rated. Also, how can I find out it's gear ratio?

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