smdO2 said:*What does ISIS splines mean? *
ISIS is a spline standard developed by TruVativ, RaceFace and Chris
King. Here's some information about it from the TruVativ web site:
'ISIS Drive info' (http://tinyurl.com/6o97o). ISIS stands for
International Spline Interface Standard.
There is also info at the 'ISIS web site' (http://www.isisdrive.com/).
There are two ISIS designs. The ISIS Drive is the new spine design.
The ISIS Overdrive is a new bottom bracket design for the more hard core
freeriding and downhill use.
A while ago Shimano introduced a proprietary spline design for their
road components and their XC mountain bike components. It was their
design, they had the patents on it, and they weren't sharing. The other
component companies (like TruVativ and Race Face) needed to come up with
a similar spline design to keep up and compete with Shimano. They
worked together and came up with the ISIS design and made it an open
standard.
The spline designs that we've been using (Profile, KH, Onza, etc.) have
been taken from BMX style components. The ISIS design is taken from MTB
style components.
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