75 Spectra V-Drive

[78Southwind]

Do you really need the collar? You're going to shorten the splined end of the shaft, why shorten per the instructions? The PTO coupler is splined thru, so why not machine the that end so it has 1/8 - 3/16 off the end of the crank? If you chunk it up in a lathe so the face is square to the splines then there is no need for the collar. The collar is there so the shaft doesn't move too far forward and comes out of the trans. If you set the end-play to the crank, the collar is useless.

I wouldn't be worried about the collar. The diameter of the collar isn't large enough to have any rotating mass that would cause vibrations or anything to loosen the bolts if torqued properly and locktite is used. There's no end thrust applied to move the collar forward so that's not an issue either. If your really worried about it coming apart, assemble it, tighten the collar in place and then remove the drive and tack the two pieces of the collar together. I'm not a fan of doing something like that but it would give you the peace of mind you looking for.

Thanks...I will think this through.