The Home Machinist!

A little off-topic, but I fail to understand why any website that exists to sell a product would use one of the "weird" top-level domains (TLD), such as .biz . I can't speak for others, but I would never even think to search for a <insert_your_domain>.biz address, or .info, .tv or some of the other ...

mklotz wrote: ↑

Sun Jan 17, 2021 10:59 am

LoL!

Harold: Do NOT undersell your knowledge because you lack an engineering degree! Your practical knowledge is the envy of any engineer!! RussN Yep! I like to remind people that possessing a college degree means you attended the required lectures, passed the required tests and didn't p**s off your pro...

NP317 wrote: ↑

Wed Jan 13, 2021 11:50 am

BigDumbDinosaur wrote: ↑

Tue Jan 12, 2021 4:36 pm

[snip]
Have you given any thought to cooling your motors?

Glenn lives in NW Washington State where tracks are often under water...

RussN

Ah-ha! Water-cooled traction motors! Why didn't I think of that?

Why not Argon? Argon is suitable but the weld quality may not be as cosmetically pleasing. In my experience, tri-mix seems to be more forgiving with stainless alloys. It depends a lot on the weldor's skill. Can't say that i have ever heard of or seen a reference to using tri mix for TIG welding sta...

I've been using some hammer faces (that are described hard white nylon) on some specialty hammers...I've made a pair out of Delrin for one of the folks to test. I'm only using Delrin as a test, since I have some on hand. I'm not sure if Delrin is a better or worse substitute material for the nylon....

followed by rapid air cooling. Can you expand on that? Steel is normally annealed by slow cooling. 404 is an exception. If you are still in doubt look it up. :D All the welding capability I have is silver brazing and flux core which it usually turns out looking like solidified volcanic lava all rou...

As stainless alloys go, it's easy to weld via the tungsten-inert-gas (TIG) process, using tri-mix as the shielding gas and a compatible filler. Why not Argon? Argon is suitable but the weld quality may not be as cosmetically pleasing. In my experience, tri-mix seems to be more forgiving with stainl...

Turns out, one motor would be sufficient for torque and tractive effort. However, I want to go with two motors, one on each truck, to better distribute tractive effort to all four axles. Also, such an arrangement reduces the temperature rise in each motor. Overheated and burned-out traction motors ...

Mobil's Vactra machine oil is a good choice that is readily available. That's what I used with my lathe.

Type 404's chemical composition includes a trace amount of carbon and a small amount of nickel, but much less nickel than typically found in 300-series alloys, which sort of makes 404 an austenitic/ferritic hybrid. 404 will not respond to heat treatment, but can be annealed by raising it above its t...