Differences detailed '11's & '12's to '13's & '14's
MH, I was just starting to type a reply here whew your PM popped up.
As for jack shafts the length of the '12 is longer but just on the output end, has the slight notch for the size of the chain case seal, and the outside surface is quite coarse as turned finish. The '13's outside finish is much smoother (maybe even center less ground), not seal notch and output splined end is shorter.
As for brake, These are the differences I've noted. Functional dimensions are identical. '13 hose is about an inch longer than the '11-'12 hose and the '13 is flipped where it mounts the the caliper by the banjo bolt. The mounts are identical other than bolt size is Larger on the '13 (8mm instead of 6mm from memory, and were upsized due the '13's & '14's disc being roughly 1' smaller in diameter and thus more sheer load gets transferred to the caliper bolts), I can photo and email pics if needed. The other notable difference is the bleed nipple location got moved from above the banjo bolt on the '11's and '12's to the opposite side of the banjo bolt on the '13's. Due to polaris moving the caliper from the back side of the '11's and '12's to the top of the '13's.
Wondering about using an 11/12 caliper on the 13 backing plate... MH, Yes if you upsize the tapped holes for the bolts in the steel caliper mount or find / make a shoulder bolt, the downside is bleeding the brakes, with the bleed screw location you have to remove a bolt and rotate the caliper to bleed it. Not a show stopper but an inconvenience. You could also drill and tap the '11-'12 caliper for a second bleed nipple in the '13-'14 location and not use the original nipple
And weather or not the 11/12 Jackshaft will still work with the QD sprocket and brake disk.... I know the end is longer... but it could be machined off and re-drilled or have a spacer made to take it up.
I shouldn't need to use any of the '11's-12's I've got, but yes that is a viable option, as I have machine access, I am going to update my '13 shafts with the bolt counterbore before using them even though the bolt shearing issue seams isolated to the QD system and much less so with the aftermarket drives. If I need to use any of the older shafts I will update them to the '14 dimensions as well, just because every gram counts in my quest.
Working on some ideas for info that a few of our members have asked... I have access to the sleds.. but they are all assembled and I didn't want to pull it all apart.
Anyone have a 11/12 shaft they can lay next to a 13/14 (PRO-QD) shaft for a photo with the Sencondary ends lined up?
Yes if needed but I believe my verbiage should have clarified the differences.
