I'm still collecting parts and info before putting the engine together.
I've got some primary drives, clutch baskets and will use the best of those for refurbishment. Following the tips above I will get new OEM clutch plates, springs etc.
We just got a 2.5D waterjet at work so I might cut some alu clutchplates in downtime
for giggles and comparison later on.
When I've got the clutch parts redone I was thinking of getting them balanced.
Now I would like some input on the next parts I'm looking at:
The final drive had some versions over the years.
23520-300-020 SHAFT, final driven weighs 396.2 gram (early style hollow axle with chain oiler)
23520-300-030 SHAFT, final driven weighs 462.6 gram (later K version)
I was thinking of using the older type shaft and blocking of the end with a custom machined and staked alu plug to save on rotating mass.
Which bearing do you guys recommend?
91007-300-008 BEARING, ball, special 6305
91008-300-008 BEARING, ball, special 5206
both are listed for these shafts, whereas the first is for a 25mm ID 62mm OD and the thickness is 17mm (which doesn't fit my shaft)
The latter is 30mm ID which fits my shaft but the thickness is 23.8mm, comparable you can buy a 6206 bearing which is 16mm thick but otherwise fits.
Perhaps I have to come up with some special washer for this bearing as well, but that's no problem for me.
Longevity aside a smaller single bearing should reduce drag and alignment issues if I've understood correctly.
Is it worth the hassle?
Here is a link to a page on which I've put some of my CAD models where the later version solid shaft with double row bearing is posted.
https://grabcad.com/library/honda-cr750-cb750r-final-driven-shaft-1