Wing final...

Valkyrie final...

Good splines...

Splines with some wear... see how they are stepped on the wear side?

People seem to get $500 or more for unworn Valkyrie final drives these days.
Some of us have been rebuilding Valkyrie final drives with good splines from
1500 wings. It might be a pain in the rear end if you were trying to do it to
save money or in an emergency. I'm doing it so I'll have a spare, and because
it is fun... since my Valkyrie's final drive is currently OK, I don't have a time
constraint...
http://www.valkyrieforum.com/bbs/index.php/topic,48990.0.htmlThe splines in the pinion cup (that thing sticking off the end of the wing final
in the picture above) need to be OK too, but pinion cups are not expensive new.
Other stuff inside the final drive (bearings) could be bad even if the splines
on the outside look good, but I don't think that is common.
-Mike