A couple of weeks ago I bought a $600 Crystalyte HS 3540 conversion kit from Grin Tech. I paired this state-of-the-art hub motor with a controller capable of handling almost 3kw (72 volts at 40 amps). (For comparison my Big Dummy typically runs at 1kw.) After a few technical difficulties I was able to put Black Beauty to the test. I found a quiet level stretch of road, pulled back the throttle, and let her unwind. She accelerated quickly to 40mph. At first it was frightening. Then it was exhilarating. But in the final analysis it’s embarrassing how fast this bike can go, since elsewhere I’ve blogged about the evils of speed. My main interest in building a high-powered bike is to make it capable of carrying adult passengers. Being able to go fast is an annoying side effect.

A couple of weeks ago I bought a $600 Crystalyte HS 3540 conversion kit from Grin Tech. I paired this state-of-the-art hub motor with a controller capable of handling almost 3kw (72 volts at 40 amps). (For comparison my Big Dummy typically runs at 1kw.) After a few technical difficulties I was able to put Black Beauty to the test. I found a quiet level stretch of road, pulled back the throttle, and let her unwind. She accelerated quickly to 40mph. At first it was frightening. Then it was exhilarating. But in the final analysis it's embarrassing how fast this bike can go, since elsewhere I've blogged about the evils of speed. My main interest in building a high-powered bike is to make it capable of carrying adult passengers. Being able to go fast is an annoying side effect.

A couple of weeks ago I bought a $600 Crystalyte HS 3540 conversion kit from Grin Tech. I paired this state-of-the-art hub motor with a controller capable of handling almost 3kw (72 volts at 40 amps). (For comparison my Big Dummy typically runs at 1kw.) After a few technical difficulties I was able to put Black Beauty to the test. I found a quiet level stretch of road, pulled back the throttle, and let her unwind. She accelerated quickly to 40mph. At first it was frightening. Then it was exhilarating. But in the final analysis it’s embarrassing how fast this bike can go, since elsewhere I’ve blogged about the evils of speed. My main interest in building a high-powered bike is to make it capable of carrying adult passengers. Being able to go fast is an annoying side effect.