TWO CYLINDER SLIDE VALVE STEAM ENGINE CRANKSHAFT: VIDEO #2

[DoctorHerbert]

Hey John that's some great stuff. Is that a new lathe you've got yourself? I was expecting to see the Taig. When I set up my 4 jaw chuck for odd things I use a wiggler mounted in the tailstock drill chuck, it really helps speed up the setting up.

Looking forward to the next bit.

[johnsimmance]

@DoctorHerbert Hi DH! Yes, it is a 7x12 mini lathe. I still use the Taig - it is very handy if i have something set up in the mini lathe and I suddenly need to turn something else! That's a good tip about the wiggler - thanks! The next bit will take a little while, the assembly and pressing in of the shafts and crankpins is critical! I'll take it slowly! Cheers - John.

[johnsimmance]

I first used an indicator, then made many very small adjustments to the 4 jaw chuck, eyeballing it with a 2.5X clip-on magnifier! Remember that there were no adjustments to the tail stock - as soon as i could see no wobble of the center drill mark that precisely located the true center if the eccentric, I knew I was there, Putting the dead center very close to the drill mark makes any wobble easier to see. But now will come the difficult bit! Cheers! John.

[bcats171]

wow john thats quite the setup, how did you figure out where to set the tailstock.... did you just eyeball it or did you use an indicator somehow?