“I feel that life is measured in achievement, not in years alone.”
“I feel that life is measured in achievement, not in years alone.”

I’ve spent the last few years repeatedly modifying my Razor E300 to be faster and awesomer. Fitted with big lithium batteries and a juicy 500W motor, I had it regularly hitting 33 km/h in a straight line. This was just about as fast as my cousin’s rig, so naturally, I needed yet more speed.

The solution? I grabbed a bit of steel and cut out my very own sprocket using an angle grinder, a Dremel, and my home photocopier. This got me up to 40 km/h, more than enough to leave my buddies in the dust.

Hooning along was great fun, but I only had a range of about 5 kilometers before I’d run out of juice. This was a pretty hard limit on how much fun I could have with my pals, so I decided I’d invest in a bigger battery.

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Illustration for article titled My E-Scooter Hit 40 km/h... Then I Blew It Up

I sourced myself an 18 Ah 36V unit, over twice the capacity of my original batteries. Sounded like a good plan, at first. Unfortunately, I quickly realised it couldn’t deliver the same current as my original batteries, so I had to reduce my performance somewhat. I reduced the current limit on the speed controller, and switched the gearing back to drop my top speed.

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I went out on a final test ride, absolutely psyched to get some good range out of the rig, hooning around the suburbs. Alas, 8 kilometers of heavy riding proved too much, and the poor motor simply couldn’t dump the heat fast enough. Now I’m out several hundred bucks for a motor upgrade to get the most out of the expensive battery I just bought. It’s always something!

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