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  1. E

    Large train derailment in Ohio.

    ~~~~~~~~~~Mod Delete - Personal Attack ~~~~~~~~~~~
  2. E

    Large train derailment in Ohio.

    Since we had our own railroad where I was employed for 30 years , round house and shop for repairs. I never saw a wheel bearing cause a derail even with the ancient cars we sometimes pulled coal from the mines with that had sleeve bearing with oil boxes. It may have been a wheel bearing but I...
  3. E

    Thermite/aluminum powder

    For proper reactivity the aluminum has to be a "powder" as in metal flake paint. You can research what mesh screenn the powder has to pass thru to meet specifications for thermite reactions but I suspect you are going to need a ball mill or something of that nature to grind the aluminum to an...
  4. E

    Large train derailment in Ohio.

    I have seen wheels sliding locked up so I am not convinced that would cause a car to derail . We had our own railroad where I worked , engines, cars, roundhouse etc and the older cars with sleeved bearing shad this happen every so often / without derailing the car. Now if the wheel actually...
  5. E

    Large train derailment in Ohio.

    https://www.cnn.com/2023/02/25/us/ohio-train-derailment-bearing-vibration/index.html Hard to believe a bearing ran hot enough to burn thru and axel in 38 miles so we may never know what caused the wreck . Detectors could have given a false reading so we will see how the investigation continues
  6. E

    Large train derailment in Ohio.

  7. E

    Large train derailment in Ohio.

    so they ignored the hot bearing and kept on going ? I bet that goes over like a fart in a space suit when this goes to court
  8. E

    Large train derailment in Ohio.

    been around since bronze sleeve bearings so not a new thing, at least since the 70,s when the idea was related to me by a Southern RR dispatcher that I knew personally
  9. E

    Large train derailment in Ohio.

    https://www.washingtonpost.com/transportation/2023/02/24/ohio-train-derailment-investigation-hotboxes/. Apparently a hot roller bearing caused his wreck and either the hot problem was ignored or the detectors were not working. Hot boxes became an old problem after railcars stopped using bronze...
  10. E

    Making splined shafts/axles, heat treat before machining?

    Glad I checked out this post. I have never had to have parts heat treated so this was an informative discussion
  11. E

    Visibility of the puddle Tig Al vs Tig SS

    You may have glaucoma coupled with cataracts. I repaired boat props for years welding thin prop blades with a lincoln 300 air cooled torch with thumb .control . I have glaucoma and that killed my welding . I had lens replacement to fix the cataracts which helped but I still have a problem with...
  12. E

    Drills breaking drilling through Grade 5 bolts

    Stainless work hardens fast so I would slow the rpms down to about half what you are running . I have also had good success with adding blocks of ice to the coolant tank and reducing the tenperature as cold as possible. The colder you can get the coolant the fewer problems you will have rolling...
  13. E

    I keep hearing that this winter will be bad for manufacturing in Europe.

    exzorbent energy costs is part of the problem since a few people still believe we can run the world on wind , solar and batteries . Try that with an electric smelter or scrap furnace. . Germany today has the highest KW/ hr cost in the world due to going Green and that is a factor over Europe...
  14. E

    Turning a thin walled part- ID or OD first?

    HAHA I guess I as, I hope he isn't still having problems with that project
  15. E

    Turning a thin walled part- ID or OD first?

    The few sleeves I machined the ID was the most critical so I drilled and bored that first using the rigidity of the OD to make the cut accurate. Then I added a large rotating center and turned the OD down to fit. I I warmed the factory piece for the sleeve and cooled the sleeve for a shrink...
  16. E

    Advice for a laptop to fit my needs

    Ok, I was just curious since Linux is android based . You can download a bare bones OS free and then add what you need to operate, unlike windows which comes loaded with a lot of memory gobbling systems that you may not need . If you have an old laptop running slow with windows 7 you can...
  17. E

    Advice for a laptop to fit my needs

    You might like linux os better than windows , it's less buggy and they offer a lot of cad software free. You can build your os like you want it with linux and avoid all the clutter associated with windows. So I am guessing you do not have a laptop at all now is that correct...
  18. E

    Poorman's grinding tool for vertical mill

    Dob't get too wound up , it's just an alternative if you need one . Hopefully no one felt obligated to build on the idea . Grinding is a risk even if everything is covered but you can minimize the risk with common sense.
  19. E

    Poorman's grinding tool for vertical mill

    Not something I do daily and the ways have covers . I also cover the table .
  20. E

    Poorman's grinding tool for vertical mill

    Items you will need: 4.5" depressed center grinding disc with 5/8" center hole , 3/4" round stock about 6 " long , 1 1/4" or 1.5" round stock, a 5/16 nc tap ,5/16 socket head couter sunk screw , washer that fits the ID depression of the depressed center grinding disc, a counter sink or...

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