Hey guys,
I've been wondering about this for the last couple of days... i have an idea, it's not perfect, but i'd like to hear your input on it...
I was inspired by Applied Science who made a video about air bearings:
https://www.youtube.com/watch?v=K_N_h_mKf-4
I thought that i might be able to create a stand and then balance the setup:
Attachment 476314
...so a shaft similar to the one in the motor on two DIY air bearings like from applied science... then i'd drill holes in the side of the pully until it's balanced...?
In order to make this work, i'll have to order a new pulley(i messed up the one i have, so i need a new one anyways):
Attachment 476316
How would you specify that this needs to run at 10k? I've used the "dreaded" concentric symbol here, but i have no idea what sort of tolerance to add to make it "as good as possible but still realistic"? How would you spec it?
I was planning on having a close fit on the back-part of the pulley to locate it on the shaft. The motorshaft is Ø38js6(37,992 -> 38,008) so i'm considering making the tolerance a light interference fit. Lets say "37,96H7"(37,960 -> 37,985). With heat it should work according to my calculations(around 150c should do it in the worst scenario). But i'm not sure if it is worth the trouble?
I'm aware that when i take the assembly off the balance shaft and put it on the motorshaft i "ruin" the balancing. But i thought that i might perserve a good portion of the balancing if i make sure to assemble everything identically on the two shaft(especially rotation of the locking assembly).
Thoughts?