It is smooth enough, medium speed range is very good, gradually stretching to the high speed area without feeling stress, is good also for fuel economy. I'm glad. The weight roller can be used as it is, especially if there is no wear.
Acceleration and maximum speed are improved. It was late from the start to the highest speed, but after attaching the high speed pulley, it started to accelerate all at low speed, medium speed, high speed all at once. The maximum speed was 5 km / H faster. I'm glad I could exchange it.