
Chain length can be pre-calculated by:
Taking the difference in the number of teeth being changed and dividing by 2.
(Round up or down to the nearest even link, if you have a remainder such as .5)
Example(Stock 919 gearing 16/43 going to 15/45)
16 + 43 = 59
15 + 45 = 60
60 -59 = 1 divded by 2 = 0.5(Round to the nearest even number)
If you start with a chain that is 112 links: NO change required!!
Enjoy
