The belt size will be 52.5"...actual measurement at middle of adjustment was 52.25.
I am going to go with the serpentine belt, 1" wide.
I have two choices....I can splice and or glue a belt together or I can disassemble the HS and the countershaft and install it as one piece. I am going to go with the 1 piece so once I'm done with the inspection of the bed, I'll tear it all apart and install the belt.
I was thinking as I was contemplating this, wouldn't it be nice to have a row of index holes in the bull gear like my old Atlas had! It had an index pin and a row of 60 holes. As I'm going to use this lathe with my existing tooling, ie AXA QCTP and all the attachments I have already made for it, It would be really nice to have
Now how many holes?
60 is the general number on Watchmakers lathes. Besides doing basic division for wrench flats and hexes for bolt heads, 60 gives enough divisions so that when making cutter, it's easy to put say 6 degrees of rake on the back of the cutting edge just by going 1 hole, and file the relief using the filing rest.
2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60.
Southbend did this as an option
as taken from the
www.lathes.co.uk site
Since the bull gear will be off, I'll set it up and put the holes in. I think I'll use 3/32" holes put in while the gear is mounted to a rotary table. I'll do it on the Van Norman....
The index pin will be fixed and attached to a spring arm, mounted to a block that clamps on the front bed way.
This block will do double duty as a dial indicator saddle stop block also.
One thing to keep in mind is that the gear guard and the back gear pin are very close....so I'll have to sort that part out as I go. For the light work I have in mind, I think it will be fine.....no 25 HP cuts with this set up though! :big:
BUT NOT THIS WEEK!
;D
Dave