Quote Originally Posted by DSR View Post
Hi RideH2O,

I wasn't familiar with the Seadoo shafts, so I googled them....
YIKES!! I've got some machining experience so I got to ask a rhetorical question.....WTF were they thinking when they came up with that?!?!?
Do the couplers require that the splines be shaped like that I assume?
The rounded spines are so you don't have to line the driveline up dead on. You can be off a teeny bit and stil be good. The older Seadoos that used couplers had straight splines at the couplers.