Comment by fix4fun

23 days ago

Really nice project - respect :)

Got two questions: 1. How fast it can ride ? If I good estimate (based on max 2750 RPMs for electric motor MY1016 350W 36V, gear ratio ~100:1 and height of rear wheel ~0.5m) it should got about 0.8 m/sec. So really safe for kids and dad :)

2. How long does the battery last ?

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fix4fun

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jstanley  22 days ago

I think it goes about 6mph. I agree with your maths though, so probably my estimate of the gear ratio is wrong.

I don't know how long the battery lasts, we have never driven it for long enough to flatten the battery.

While I was building it I used it for about an hour doing several laps of dragging a "trailer" full of rubble from the top of the garden to the bottom (the easy direction - empty load on the way back up) and it became noticeably slower towards the end but still got me up the hill. So I'd say it lasts over an hour.