Search Results - Practical Machinist - Largest Manufacturing Technology Forum on the Web
Close
Login to Your Account

Search:

Type: Posts; User: 9100

Page 1 of 60 1 2 3 4

Search: Search took 0.04 seconds.

  1. I think discussion of leakage is within the...

    I think discussion of leakage is within the boundaries of the original question. Automatics are increasingly used against people because they are soft targets. With the exception of the Wildey, which...
  2. Re Nagant revolvers, if they are so great and...

    Re Nagant revolvers, if they are so great and easy to make, how come no one else has copied them?

    Bill
  3. I looked for something that illustrated my...

    I looked for something that illustrated my suggestion and found everything else. Linking to the patent was the quick way out. Nicola Tesla made configurations with the grooves angled so they...
  4. As to the pressure gradient, obviously the...

    As to the pressure gradient, obviously the pressure will be distributed across the row of vanes. I suspect that you will have a series of choked nozzles, but at the temperature and pressure in the...
  5. They don't interlock. They stay where they are...

    They don't interlock. They stay where they are with the same clearance but the surface of one or both is grooved to produce turbulence that reduces the flow.
    Look at figure 10 in this patent I got...
  6. Re revolver cylinder gap, when you need something...

    Re revolver cylinder gap, when you need something like a piston or turbine shaft seal, a common solution is to cut grooves in one of the parts, making a "labyrinth seal". Doing a search requires...
  7. Replies
    11
    Views
    688

    It seems to me that from a ballistician's...

    It seems to me that from a ballistician's viewpoint that barrel length should be the distance the bullet travels while sealed to the tube. I guess you can still argue about freebore and pressure...
  8. I have owned three Indians, had to sell the '30...

    I have owned three Indians, had to sell the '30 Scout to pay taxes, still have the Junior Scout in the picture and a 741 bored out to 37 cu in. I left them all stock, hand shift, rocker clutch and LH...
  9. Aluminum is first plated with electroless zinc,...

    Aluminum is first plated with electroless zinc, then copper plated. Once you have that, you can put on almost any plate you want. The nickel has brighteners that smooth over fine scratches and make...
  10. Replies
    11
    Views
    688

    Barrel Length Measuremwnts

    Why doesn't the cylinder length count in barrel length in a revolver? For that matter, why isn't chamber length deducted from a rifle's measurement? The bullet doesn't start from the breech face.
    ...
  11. Replies
    186
    Views
    14,724

    You got it. As they say about only counting with...

    You got it. As they say about only counting with horseshoes and hand grenades, in a lot of work "close" means "wrong." The machinist I cited in my last post was mostly making one of a kind production...
  12. Thread: OT Oz wildfires

    by 9100
    Replies
    36
    Views
    2,281

    The road to hell.................. Bill

    The road to hell..................

    Bill
  13. Replies
    186
    Views
    14,724

    A recent study concluded that the more satisfied...

    A recent study concluded that the more satisfied a person was with his or her work, the poorer the quality actually was. The best workers were never satisfied. I had the somewhat mixed privilege of...
  14. Thread: OT Oz wildfires

    by 9100
    Replies
    36
    Views
    2,281

    I have read that pre-european takeover the...

    I have read that pre-european takeover the aborigines had a controlled burn program. The St. Louis area Nature Conservancy has had one on their lands for a number of years.

    Bill
  15. An amazing piece of work. Pretty much settles the...

    An amazing piece of work. Pretty much settles the question with real data instead of guesses. One surprise was how much velocity a .357 mag can get in a 2" or 3" barrel. Of course the muzzle blast...
  16. Replies
    186
    Views
    14,724

    Newman, there are circumstances where the machine...

    Newman, there are circumstances where the machine makes a difference. There are things I would do and recommend on my 9,000 pound Boston Digital CNC mill that would be disasterous if someone was...
  17. Replies
    186
    Views
    14,724

    In the end it devolves to the statement that I...

    In the end it devolves to the statement that I can't define pornography but I know it when I see it.

    I have run a 10K all I ever want to, have thousands of hours over 40 years on a 14 1/2" South...
  18. I was specifically referring to Olympic rapid...

    I was specifically referring to Olympic rapid fire pistols where an additional mechanism would be kept clean and serviced. As close as those contests can be, a few degrees less of muzzle jump could...
  19. I wonder if a weight could be made to move,...

    I wonder if a weight could be made to move, probably operated by the slide or gas that would cancel some of the upward recoil. One that moved with the slide and back when the slide returned to...
  20. Replies
    186
    Views
    14,724

    You could do that. Have a couple of questions in...

    You could do that. Have a couple of questions in the sign up process that have answers in the rule stickies.

    Bill
  21. Replies
    186
    Views
    14,724

    I agree. If anything needs to be changed, it is...

    I agree. If anything needs to be changed, it is some people's attitude. Professionalism carries with it standards of behavior. Robert's Rules of Order, the rules of formal debate, and so on, have...
  22. Replies
    13
    Views
    960

    Last question, I hope. Where this has ended up is...

    Last question, I hope. Where this has ended up is with a contactor controlling the power to the VFD and a couple of timers, one putting a delay on startup and the other holding power on for the...
  23. The .44 Magnum came about because Elmer Keith...

    The .44 Magnum came about because Elmer Keith loaded .45 long Colts up to where they bulged the bolt cuts in his SAA which has the cuts in the center of the chambers instead of being offset to a...
  24. Replies
    186
    Views
    14,724

    On the transformers, phase converters, VFD forum...

    On the transformers, phase converters, VFD forum we have this problem in a different way. Many of the questions are from people who are definitely working machinists and qualify for PM but don't know...
  25. I would never have thought that rim thickness had...

    I would never have thought that rim thickness had more than a trivial influence on accuracy. This confirms my overarching statement of the principle of the universe, which applies to quantum...
Results 1 to 25 of 1500
Page 1 of 60 1 2 3 4