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Darren's active projects
- Thread starter Darren
- Start date
Chicken lights
Forum Pony Express Driver
It’s amazing how, when “on the clock” at a 9-5 guys squawk at staying late
Yet working for yourself long days don’t seem so long, it’s not as taxing with nobody watching over your shoulder
Then again, I’m stranded with a broken POS trailer until tomorrow sometime
Congrats on the newest addition to the family!
At least I only have to deal with one a$$hole boss now!
It's the best. Wish I could have done it sooner!
Chicken lights
Forum Pony Express Driver
My boss is kind of a jerk
He thinks I need to put in long hours to make money
Hopefully your boss is nicer!
One of mentors always used to say in his raspy voice "you'll never get rich carrying a lunch pail to work"
And:
"What the hell are you doing, you f@#king idiot!?"
I learned a lot from Jerry.
Just took it apart. Mine doesn't have the thrust bearings or that adjuster nut. The endplay is adjusted by locking the graduated dial hub tight against the shoulder with the endplay taken up. No good. The screw has some wear, as does the nut, so I'll fix all that. The screw is 9/16" 8tpi, LH acme. The rest of the lathe seems great, so should be a neat little project.
I had a bit of time to work on the crossfeed screw for the SM 1120. I ordered some 15mm ID, 28mm OD, 4mm thick thrust bearings:
Here's the part number:
I bored the original support housing to accept the thrust bearings:
On the other side of the support, the thrust bearing goes between the gear and the support housing:
The problem here is that Standard Modern did not build in a way to positively pre load, or tighten this assembly in the axial direction. No way to take up the end play other than the set screw for the hub for the graduated dial. Here's my solution:
Here's the part number:
I bored the original support housing to accept the thrust bearings:
On the other side of the support, the thrust bearing goes between the gear and the support housing:
The problem here is that Standard Modern did not build in a way to positively pre load, or tighten this assembly in the axial direction. No way to take up the end play other than the set screw for the hub for the graduated dial. Here's my solution:
Attachments
So I lost some text. The new button head screw in the end of the shaft sets the preload on the thrust bearings, and then the original set screw locks the handle on the shaft as it did originally. It's tight and smooth now .
I parted off the worn acme threaded section, drilled and reamed for a 5/16 press fit when I make the new threaded section.
I parted off the worn acme threaded section, drilled and reamed for a 5/16 press fit when I make the new threaded section.
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Seriously? You are gunna join two threaded sections to make one???
Holy Cow @Darren ! I'm REALLY IMPRESSED!
No, just going to replace the entire threaded section with one that I will make today. I ordered a chunk of 1144 stressproof from McMaster. It will have a 1" long stub of 5/16 to press fit into the old shaft. I may actually change that to 3/8". The original shaft dia is 9/16". I could have made a whole new shaft, but the tapered pin holding the gear on may have been drilled and reamed in situ, making it a bit harder to align. Will make the bronze nut first, as I'll be tapping it, then the screw will be machined to fit the nut on the snug side..hopefully. If I don't get the fit right, the new nut will be adjustable.
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