31-05-2019, 08:26 AM
(This post was last modified: 31-05-2019, 08:27 AM by Ian Williams.)
There are threads here with comments by highly respected racers such as Frank Hernandez and others who have used deep groove balls to locate the rear of the crank Evan, well worth reading. However unless you are racing hard like these guys I suggest completely unnecessary in normal use.
Black Art Enthusiast