change gears

My dad recently passed away and I inherited two lathes. I also inherited a box of gears that do not fit the Atlas lathes and after much searching, I have been unable to ID these . Any help would be greatly appreciated.

I'm unclear as to the correct order for the change gears on my lathe based on the thread chart diagram that i have attached. The lathe has a 120/127 tooth transposing idler gear. If i want to cut 1.5mm pitch metric threads would the 35 tooth upper drive gear mesh with the 120 tooth idler and...

I'm sure this is covered in other posts, but so others don't have to go on a search I'll repeat. If I've really screwed something up, please let me know and post corrections! Standard Logan change gear: 16DP, 14.5PA, 7/16" wide, 5/8" hub with 5/32" key slot. The QCGB lathes came with a 24...

Hello! I am a total beginner when it comes to machining but it is something that I have an inexorable draw towards so I was keeping my eyes open for a cheap middling size lathe. I picked this one up in Canada on my way north to Alaska for 500$ it came with a plastic tote full of tooling and...

Non Factory drawing of the change gear sleeve. Based on measurements from my Craftsman 101.07403

Non Factory drawing of the change gear bushing. Based on measurements from my Craftsman 101.07403

The time has finally come to start messing around with threading. I have a used lathe that arrived without the change gears, so I need to buy some. Should I buy metal change gears or plastic gears? I would buy the plastic, but LMS is out of stock on the full set. I'm a little concerned about...

Explanation on what change gears to use for metric threading on lathes.