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  1. #1
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    1,836

    Default Old Bench Drill Running in Reverse

    Hi Guys

    i picked up a rather old bench drill today from Gumtree it seemed to run good at the sellers house but i just hooked it up to use it and noticed its running in reverse and there is no direction switch

    am i able to reverse the polarity after the ON/OFF switch and before the motor? if i am able to will this have any effect on the capacitor?

    i don't want to burn anything out nor do i want to invest in a whole range of reverse drill bits

  2. #2
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    59
    Posts
    6,540

    Default

    Is it single phase or 3 phase?
    if 3 phase, all you have to do is swap 2 of the three wires over.
    If single phase it will depend on the motor.

    Michael

  3. #3
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    1,836

    Default

    It's single phase, after watching a video on youtube i cut one of the capacitor wires and just hand turned the drill to start it that should work for now

    a drill press is a heck of a lot easier to drill out a broken bolt than holding a hand drill

  4. #4
    Join Date
    Jun 2007
    Location
    sydney ( st marys )
    Age
    64
    Posts
    4,887

    Default

    Depends where or what the bolts in.

  5. #5
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    1,836

    Default

    Quote Originally Posted by pipeclay View Post
    Depends where or what the bolts in.
    This is what i'm trying to do pipeclay, i need to drill out those two rounded JIS screws and the tiny 2-2.5mm snapped screw

    This is a jetski carburetor i was overhauling untill i stripped the screws, basically the jetski was sunk and no care was given after it was resurfaced so the salt water sat inside the carburetor chambers untill it eventually evaporated

    I was given advice to drill the screw heads off i have done so but the inner piece that is screwed down is still stuck so tomorrow i will attempt to drill out the remaining bolts and possibly helicoil it if there is enough meat at the base i will have to check on the second carburetor

  6. #6
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    1,836

    Default

    Forgot the pic
    Attached Images Attached Images

  7. #7
    Join Date
    Jul 2006
    Location
    Athelstone, SA 5076
    Posts
    4,255

    Default

    Sounds like the start capacitor is cactus and or start windings

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