Custom/Hybrid NuSplyne Driveshafts

[Tyler Zane]

Great craftsmanship.wonder what tooling he’s using .
Misalignment on this setup will result in more vibrations so possibly more wear but also earlier indication of this.
Is the engagement longer than oem?

Thanks, I'll pass along the complement. And I have no idea on the tooling.

I am running new oem midshaft housing and new koyo bearings in the pump so if there are any vibrations it will have to be a result of the splines. I'll pay close attention and take note if I feel anything. The tolerance on these is tight, they go together like butter with no slop, if that helps.


I don't know what Yamaha intended the engagement depth to be but I know on many shafts I have seen stripped, it's always only 1/2 to 3/4 of the splines total length. On my builds I always press the midshaft in as far as it can go on blasters. I've gotten as much as 7mm more engagement and I compensate for part of that by putting a spacer behind the midshaft coupler and the rest can be taken out with the play in bedplates/mounts. On superjets I have found you can't always press the midshaft all the way because the splines can bottom out, I always make sure I leave some room so they don't.

Una mentioned that this has 2 inchs of engagement if I remember correctly. I didn't actually ask but for some reason I recall 2 inches. I'll check what engagement is with the midshaft pressed to Yamahas spec, which I believe is 19-20mmish exposed shaft out the back of the midshaft.

 

[restosud]

Always nice to see someone think outside the box and actually produce the parts.
Hope these work out and even if they don’t last as long as oem it still gives a second life to the shaft.

 

[yamanube]

Is there any way to build a slug that can be pressed into a toasted midshaft and welded in place or is it just more cost effective to build that from scratch?

 

[Tyler Zane]

Is there any way to build a slug that can be pressed into a toasted midshaft and welded in place or is it just more cost effective to build that from scratch?

I'd imagine the hardest part of the midshaft is the inner hex. The outside profile is probably turned out pretty quick. With that being said, even if a slug where to get pressed in, the inner hex tooling would still have to be done. I'll mention it, everone thinking out side the box together is what innovates parts to perfection!

The midshaft is also a grade higher than oem.

 

[Marne]

Good morning All..... second spline this season. Want to know how the testing has done on the hex "spline". Really interested in a better solution.
Greetings from Cape Town

 

[Wake Rider]

Bump, I would really like to hear ride reports/updates from the users of these shafts (maybe disassemble to check for wear/damage?).

I stripped my B1 shaft at Daytona on Saturday...

 

[davidescu_radu]

i'm interested too - is it the solution on long term?