xplodee
Hot Rolled
- Joined
- Oct 14, 2013
- Location
- Allentown, PA
Hey All-
I have a 1942 SB 10L that I rebuilt to excessive standards. I didn't rebuild the gearbox though, as well as a few other items. A while ago I located a better gearbox to re-work and install in place of my existing gearbox. It features the needle bearing version of the single tumbler which is a big improvement.
Anyway, I want to more or less create from scratch all of the shafting and any gears that are worn out. My questions are:
I know that none of this is necessary, I've been running my machine for years with a worn out gearbox and it's fine. But I'd just like to do this as a machining learning process. Thanks for any advice and guidance!
I have a 1942 SB 10L that I rebuilt to excessive standards. I didn't rebuild the gearbox though, as well as a few other items. A while ago I located a better gearbox to re-work and install in place of my existing gearbox. It features the needle bearing version of the single tumbler which is a big improvement.
Anyway, I want to more or less create from scratch all of the shafting and any gears that are worn out. My questions are:
- What is a good material for the two gear shafts and what is a good bearing material for these to run within? Originally one side runs in brass and one side runs within the cast iron itself, but these are worn out so I will rebush them. I'd like to select the best material possible. Unhardened 4140 and 932 bronze? 4140 and hardened tool steel?
- What's a good material for the gears? It's easy to cut them from 1018 but I assume I should be using something better. 4140?
- The splined tumbler shaft is particularly prone to wear. Any suggestions on how best to machine this? Should I bush the tumbler with brass to be a bit softer on the splined shaft?
I know that none of this is necessary, I've been running my machine for years with a worn out gearbox and it's fine. But I'd just like to do this as a machining learning process. Thanks for any advice and guidance!