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Quornish
vtsteam:
Oh I get it! So the trepanning tool bit was in the regular lathe toolholder, working end-on. And the blued arm is just a driving dog. Got it! :beer:
shipto:
--- Quote from: vtsteam on February 22, 2025, 04:16:55 PM ---Oh I get it! So the trepanning tool bit was in the regular lathe toolholder, working end-on. And the blued arm is just a driving dog. Got it! :beer:
--- End quote ---
:thumbup: You got it. Needed the right angled trepanning tool because of the drive dog and the tailstock getting in the way.
shipto:
I have most of the bits done for the spindle but have to figure out a few things.
first I have to make a nut with tooling thats too big, I am thinking of grinding down a old tap to make a tool small enough.
Then I have to put a 3mm keyway in the pulley again without the needed tools, This may become a side project.
Lastly I am struggling to work out how these labrynth seals actually stop grease or oil escaping and would love an explanation if anyone has one and on that note the drawing in the quorn book shows a countersunk bolt in the middle of the spindle housing which I assume is for adding oil occasionally as I cant see any other need for it.
vtsteam:
Lots of progress, Dwayne. :clap:
I kinda wondered about labyrinth seals myself. Tesla had a one way valve that used labyrinths, and then there's the scores we put on small pistons. I imagined that it was kind of like sequential pressure drops by restrictions and expansion passages.
But I found this here just now, that says turbulence is involved, so it's more than just additive pressure drops into expansions:
https://www.machinerylubrication.com/Read/29452/using-labyrinth-seals
shipto:
Obstacles overcome, spindle together and running totally free.
Next step will be the plates to mount it.
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