Announcement

Collapse
No announcement yet.

Speaking of SHARPENING machines.......

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Speaking of SHARPENING machines.......

    Many months ago I bought :-[ two of those Koch wheels - very expensive. Whole deal not a happy experience. Anyway, I have the two wheels (exactly alike) which look like very hard, very compressed felt, but solid - no layers.

    They are supposed to be rotated at a speed not to exceed 1800 rpm or less than 1000 prm. Remember, you're talking to a mechanicaly deficient nit-wit. I haven't had much luck finding something to turn these wheels and there's NO hope of me devising something.

    Please look at item # 98N20.06 on http://www.garrettwade.com It's a deluxe (should be !!) ultra-slow 1120 rpm vertical grinder. $154.50 'on sale'. Is this the right motor? Could I do better? Sure thing I couldn't do worse.
    TIA

  • #2
    Re: Speaking of SHARPENING machines.......

    In the same catalog the TORMEK is item #98M02.01.
    How stupid would it be for me - the nit-wit - to consider buying one of those? :
    I have the John Burke and a Stephan.

    Comment


    • #3
      Re: Speaking of SHARPENING machines.......

      Nancy,
      You should be able to locate an inexpensive (30-40 dollars) bench grinder that turns at 1725.

      Comment


      • #4
        Re: Speaking of SHARPENING machines.......

        Nancy, what speed do your current sharpeners turn at? Not the motor, the wheels. I think the Burke is jacked down quite a bit. If you take the rated RPM of the motor (should be printed on the motor somewhere) multiplied by the diameter of the pulley on the motor, and divide the whole thing by the diameter of the pulley on the driven shaft (the one the wheels are attached to), you will have the RPM of the wheels.

        For instance; motor RPM 3400 RPM times the motor pulley diameter (say 1 1/2') equals 5100. Now if the drive pulley on the wheel shaft is 4', divide that 5100 by 4 for an output RPM of 1275.

        Any motor speed, any size pulleys, the proceedure is the same.

        Your burke system will probably have the low RPM you need. If not you can change the final RPM by changing the pulley diameters and you'd probably need to change belt length to adapt, but that \'s no big deal.

        Put a 1 inch pullet on the motor, and that 1275 RPM drops way down to 850 RPM

        Doesn't help, huh? Oh, well, I tried!

        Al

        Comment


        • #5
          Re: Speaking of SHARPENING machines.......

          Rick and Al - thanks. I'm confused. And I know all the fancy machines will never make me a sharpener.
          :-[ :

          Comment

          Unconfigured Ad Widget

          Collapse

          Latest Topics

          Collapse

          • will8989
            Bruce at the sawmill
            by will8989
            This video was taken where Bruce volunteers at the sawmill. Bruce is the tall one at the back of the saw.
            https://youtu.be/ffsJjR0Sc3c
            Yesterday, 09:27 PM
          • will8989
            Reply to How to start the day
            by will8989
            No worries Linda, I have all my receipts since we bought the house, the updates on the updates!
            Yesterday, 09:22 PM
          • vgraf
            Reply to elementary questions
            by vgraf
            Cute Pattern.
            I have good success treating the wood with spry shellac before cutting. There will not be a problem painting the pieces with craft paint over the shellac. As previously said, just be sure to keep the paint off of the cut edges. If you want to seal the craft paint, a light spray coat...
            Yesterday, 09:14 PM
          • dwssr2
            Reply to elementary questions
            by dwssr2


            This is the puzzle, for some reason I usualy make my puzzels with thicker stock, sometimes 3/4 oak or pine or poplar. I have made puzzels in the past I just wanted to get some fresh ideas on blades and finish. I like the idea of applying shellac first that is if the paint sitll covers...
            Yesterday, 06:30 PM
          • will8989
            Reply to Having a Betty week UPDATED: See post #7
            by will8989
            No more waiting for weeks to start therapy. The sooner you use the replacement the better. Bruce was doing mild hand exercises the day after his surgery and bending slightly at the elbow. They expected him in pt for at least 6-9 months. He stopped in February and is doing home therapy, like lifting...
            Yesterday, 01:29 PM
          Working...
          X