Front/Rear Gear Ratio on YM1510D

[PruceBoy]

I measured the front to rear gear ratio for my 1510D. I get a ratio of 1.58, that is, the front wheel makes 1.58 revolutions for each revolution of the rear wheel. Anyone out there know if this is about right? 1.58 could be anywhere from 1.56 to 1.60.
BTW, I used the technique described in post #118439. Thanks, guys!