Hello all! Can anybody explain to me why the Xduro models have a small front chainring with only 18 teeth, while the Sduros have as many as 44 teeth? This means that the Yamaha-powered models have the maximum gear ratio of 4, compared to only about 1.6 for Bosch. Given that the two motors generate almost identical torque, why such a huge difference?
Gear Ratio Question
- Thread starter Halcyon
- Start date
Ravi Kempaiah
Well-Known Member
- Region
- Canada
- City
- Halifax
@Halcyon ,
The Bosch motor turn 2.5 times for each crank rotation effectively giving a 18T the same gear ratio you would get from a normal 45T chainring.
If you would like to know more about the difference between Bosch and Yamaha systems, here is a great article. You may also find this video interesting.
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