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Thread: Hybrid arbor-pulley

  1. #11
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    Mar 2013
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    West coast of Canada
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    Brian - How does the motor shaft actually drive the arbor? I don't see a key or setscrew anywhere. But I do see and allen wrench so there must be a setscrew somewhere.
    Larry

  2. #12
    Join Date
    Mar 2008
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    Barrie, Ontario, Canada
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    One 1/4"-20 set screw thru the 1 1/4" sleeve and seated in the bottom of the keyway. The pulley is not welded either--it has a 5/16" set screw thru the hub area and bears against the outside of the 1 1/4' diameter piece. I didn't want to make too many things "immovable" in case anything actually did give me a problem.
    Brian Rupnow

  3. #13
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    Dec 2015
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    Chilliwack, BC, Canada
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    The setup and manner of use seem just fine to me. With no belt on the pulley during buffing at worse you will touch the edge of the pulley and scuff a bit of skin. Then you won't do that anymore.

    It would never pass muster in this safety focused age in a multi person shop but as you say it's still head and shoulders better than what you did before.

    It would be different if it were going to have a belt in the pulley during buffing. Then I'd be siding with the doomsayers. But without a belt in place it's no worse for safety than any number of other power tools we all use and a lot better than many of them.

  4. #14
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    Mar 2015
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    Central Ms
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    Didn't intend to be a doomsayer, but like ccwken I speak from experience. I have a scar under one fingernail that has been there since 1954; the result of getting the fingertip under the v belt on a jig saw. Mom nearly fainted when she saw the nail had been pulled out from the rear and still attached at the front.
    “I know lots of people who are educated far beyond their intelligence”

    Lewis Grizzard

  5. #15
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    Dec 2015
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    Yeah, but there won't be a belt in place when he's buffing. The pulley is only being used for short times to break in a new engine.

  6. #16
    Join Date
    Jan 2003
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    Deep in the Heart of Texas!
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    Quote Originally Posted by BCRider View Post
    Yeah, but there won't be a belt in place when he's buffing. The pulley is only being used for short times to break in a new engine.
    So you're saying the pulley doesn't spin when he's buffing? See post #8

  7. #17
    Join Date
    Mar 2008
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    Barrie, Ontario, Canada
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    I don't polish a lot of things. During my fourty year fascination with hot-rods, I polished a number of aluminum brackets and small parts, to the point where I actually became quite good at it. I "studied" the art of polishing, read everything I could find on the subject, and like many other "new" things I learned, I flogged it right to death. Eventually the hot-rods left my life, and I took up machining as a hobby. Somewhere along the way, I lost track of my dedicated arbor for polishing buffs, and resorted to a long bolt with a nut and two washers holding the buff, with the shank of the bolt held in the 3 jaw chuck on my lathe. If you think the picture I posted is terribly dangerous, you would have had a heart attack if you knew how many times I got my knuckles rapped by a spinning chuck jaw. I decided to polish the last engine I built, and while doing it, decided that I really needed to do something "a little better". I only have one other motor that is not "fully dedicated" and that is the one I added the arbor to. I don't do enough polishing to drop $100 on another motor, so will live happily with what I now have, knowing full well that every time I use it I am courting death and dismemberment. When my fingers go flying off into the sunset without the rest of me, I will fondly remember all of the warnings I have received on the forum--Brian
    Brian Rupnow

  8. #18
    Join Date
    Mar 2008
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    Barrie, Ontario, Canada
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    Not out of any undue considerations of my fingers, but in order to get the correct ratio I machined a smaller v-pulley from aluminum and mounted it on my arbour. The original pulley which I showed on the arbour was 3.5" diameter. The new one is 2 1/2" diameter, which restores the ratio I wanted and does get the pulley a little farther away from my fingers if I want to polish something on the buff.
    Brian Rupnow

  9. #19
    Join Date
    Mar 2015
    Location
    Central Ms
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    Did some web searching and found this pic of the saw that pulled my fingernail off. Notice there is no belt guard mentioned. Sorry but could not find an English version.

    http://www.eltallerderolando.com/201...954-005-copia/
    “I know lots of people who are educated far beyond their intelligence”

    Lewis Grizzard

  10. #20
    Join Date
    May 2016
    Location
    Michigan
    Posts
    499

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    If you ever have to replace the bearing heads on your mower deck, inside the old one/s is a flanged shaft.
    It is of machinable steel so the flange end can be re-purposed to hold a buffer etc, or in my case, a slitting saw.
    Added bonus of this one is that the spline is a multiple of 3 so it grips positively in a 3 jaw

    https://app.box.com/s/lykt7hdqf5ldehlrcoa4ff7agk8wjnuq

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