This time I used the ends of the CV shafts which normally house the hex sliding shafts. Made an ally shaft to fit snugly inside, and pinned them with a 3mm grub screw. Also added the balancer from the earlier shaft, but this time drilled and tapped a 4mm hole one side, for a 4mm grub screw, idea being to rotate it and neutralise the vibration.
As before, it all vibrated insanely at anything more than about 5000rpm. The balancer reduced it slightly, but even putting 2 grub screws in the same hole to add more weight changed nothing. The ends are so badly out that nothing is going to fix it unfortunately. One of the biggest problems is that the CV joint has far too much side movement, and that and the Chinese machining error, added together is useless for anything high speed. Maybe tiny Teflon shims either side of the CV ball to take the play out might work, and a big hammer to straighten the ball end, but..................
I think I'll give it a rest for a while, till I think of something different to use. I think for this type of system, a cable may be the only answer.
CONCLUSION,- you can put lipstick on a pig, but it's still a pig😁
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