Search found 1190 matches

by BigDumbDinosaur
Sun Jan 17, 2021 1:42 pm
Forum: Live Steam Marketplace
Topic: LocoParts?
Replies: 11
Views: 665

Re: LocoParts?

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 ...
by BigDumbDinosaur
Sun Jan 17, 2021 1:29 pm
Forum: The Junk Drawer
Topic: Approaching the Apex
Replies: 3
Views: 66

Re: Approaching the Apex

mklotz wrote:
Sun Jan 17, 2021 10:59 am
Image
LoL!
by BigDumbDinosaur
Sun Jan 17, 2021 3:24 am
Forum: The Junk Drawer
Topic: Approaching the Apex
Replies: 3
Views: 66

Re: Approaching the Apex

? ? ?
by BigDumbDinosaur
Fri Jan 15, 2021 5:53 am
Forum: General Discussion
Topic: angular contact bearings
Replies: 19
Views: 727

Re: angular contact bearings

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...
by BigDumbDinosaur
Wed Jan 13, 2021 8:43 pm
Forum: Riding Scale Railroading
Topic: Electric power primer
Replies: 27
Views: 4364

Re: Electric power prime

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...
:lol:
RussN
Ah-ha! Water-cooled traction motors! Why didn't I think of that?
by BigDumbDinosaur
Wed Jan 13, 2021 3:55 am
Forum: General Discussion
Topic: Does 404 SS anneal and become malleable?
Replies: 12
Views: 334

Re: Does 404 SS anneal and become malleable?

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...
by BigDumbDinosaur
Tue Jan 12, 2021 5:02 pm
Forum: General Discussion
Topic: Materials Question
Replies: 8
Views: 247

Re: Materials Question

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....
by BigDumbDinosaur
Tue Jan 12, 2021 4:52 pm
Forum: General Discussion
Topic: Does 404 SS anneal and become malleable?
Replies: 12
Views: 334

Re: Does 404 SS anneal and become malleable?

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...
by BigDumbDinosaur
Tue Jan 12, 2021 4:40 pm
Forum: General Discussion
Topic: Does 404 SS anneal and become malleable?
Replies: 12
Views: 334

Re: Does 404 SS anneal and become malleable?

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...
by BigDumbDinosaur
Tue Jan 12, 2021 4:36 pm
Forum: Riding Scale Railroading
Topic: Electric power primer
Replies: 27
Views: 4364

Re: Electric power prime

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 ...
by BigDumbDinosaur
Tue Jan 12, 2021 1:51 am
Forum: Lathes
Topic: Lathe LUBE advice needed
Replies: 3
Views: 236

Re: Lathe LUBE advice needed

Mobil's Vactra machine oil is a good choice that is readily available. That's what I used with my lathe.
by BigDumbDinosaur
Tue Jan 12, 2021 1:46 am
Forum: General Discussion
Topic: Does 404 SS anneal and become malleable?
Replies: 12
Views: 334

Re: Does 404 SS anneal and become malleable?

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...