The difference between road and MTB is just axle length. The Sheldon Brown picture shows early & later Octalink, and applies to both road & MTB. The early version has short splines which proved too weak, so Shimano issued a second version with much longer splines and kept very quiet about the appalling balls up they had made of the first version.
cool! thx for clarification!! i always wondered why the big S made those super small splines with so much space available for bigger ones! I guess they make mistakes sometimes!
The difference between road and MTB is just axle length. The Sheldon Brown picture shows early & later Octalink, and applies to both road & MTB. The early version has short splines which proved too weak, so Shimano issued a second version with much longer splines and kept very quiet about the appalling balls up they had made of the first version.