TRC is primarily funded by ad revenue. If you like the content you find here, please do not block our ads. Thank you.
Results 1 to 12 of 12

Thread: 1/8th hp electric motor prob.

  1. #1
    Mr Solex Zanx's Avatar
    Join Date
    Dec 2007
    Location
    Ilford innit.
    Posts
    19,668
    Like
    7
    Liked 18 in 13 posts
    Blog Entries
    3

    Default 1/8th hp electric motor prob.

    I'll be looking at converting the new pillar drill to 240v at the weekend, there's a motor ready to go on, it's a bit old but in good nick. Only problem is that when tested in the kitchen, it will occasionally hum violently and not start to turn, if the shaft is turned very slightly it will start on the next attempt.

    It's a cap start, would it be this?
    Register to join this UK Motorbike Forum, start a motorbike blog, or use our free motorbike classifieds!


  2. TRC is primarily funded by ad revenue. If you like the content you find here, please do not block our ads. Thank you.
  3. #2
    Should Get Out More
    Join Date
    Dec 2007
    Location
    South Uist
    Posts
    14,251
    Like
    0
    Liked 31 in 17 posts
    Blog Entries
    2

    Default Re: 1/8th hp electric motor prob.

    Could be a failed cap. Does it run properly if you flick it round a bit when it's humming?

  4. #3
    Should Get Out More protoborg's Avatar
    Join Date
    Jan 2008
    Location
    Doing an Andrew Mitchell
    Posts
    19,943
    Like
    12
    Liked 35 in 22 posts
    Blog Entries
    1

    Default Re: 1/8th hp electric motor prob.

    Have you checked the carb, jets prolly need cleaning.

    On a more serious note, first place I'd look is the rotor. Over the years specks of copper removed from the contacts form a bridge across the insulation ruining the motors overall performance. A labour intensive task to remove the fouled insulation and replace it but the performance will be back to new, particularly the torque.
    Last edited by protoborg; 07-02-13 at 13:54. Reason: furds in a woddle
    Register to join this UK Motorbike Forum, start a motorbike blog, or use our free motorbike classifieds!

  5. #4
    Mr Solex Zanx's Avatar
    Join Date
    Dec 2007
    Location
    Ilford innit.
    Posts
    19,668
    Like
    7
    Liked 18 in 13 posts
    Blog Entries
    3

    Default Re: 1/8th hp electric motor prob.

    Quote Originally Posted by cheb View Post
    Could be a failed cap. Does it run properly if you flick it round a bit when it's humming?
    Dunno, don't really want to touch it if it's humming. I'll try with some string. It has a brake as well.
    Register to join this UK Motorbike Forum, start a motorbike blog, or use our free motorbike classifieds!

  6. #5
    Should Get Out More Wreckless Rat's Avatar
    Join Date
    Jan 2008
    Location
    Norfolkshire
    Posts
    17,910
    Like
    113
    Liked 89 in 47 posts
    Blog Entries
    1

    Default Re: 1/8th hp electric motor prob.

    wear a pair or marigolds...

  7. #6
    Should Get Out More
    Join Date
    Dec 2007
    Location
    South Uist
    Posts
    14,251
    Like
    0
    Liked 31 in 17 posts
    Blog Entries
    2

    Default Re: 1/8th hp electric motor prob.

    Has it got a fan you can prod even if you have to take the cover off? I doubt you'll hurt yourself but you could try pushing it round with a stick or a plastic rod. It takes very little force to start one. Once it starts to rotate you'll know if it's spinning up normally.

    Capacitors are easily found on Ebay.

    Added: Humming doesn't worry me but I'm sure sure I poke it if it was buzzing IYSWIM.
    Last edited by cheb; 07-02-13 at 14:10.
    Register to join this UK Motorbike Forum, start a motorbike blog, or use our free motorbike classifieds!

  8. #7
    Mr Solex Zanx's Avatar
    Join Date
    Dec 2007
    Location
    Ilford innit.
    Posts
    19,668
    Like
    7
    Liked 18 in 13 posts
    Blog Entries
    3

    Default Re: 1/8th hp electric motor prob.

    Quote Originally Posted by cheb View Post
    Has it got a fan you can prod even if you have to take the cover off? I doubt you'll hurt yourself but you could try pushing it round with a stick or a plastic rod. It takes very little force to start one. Once it starts to rotate you'll know if it's spinning up normally.

    Capacitors are easily found on Ebay.

    Added: Humming doesn't worry me but I'm sure sure I poke it if it was buzzing IYSWIM.
    Ok, humming with sufficient vigour to move round on the kitchen worktop a bit. It's not a transformer type hum, more a rapid switching on and off of something in there. Might just pull it apart and give it a clean before putting it on the drill.
    Register to join this UK Motorbike Forum, start a motorbike blog, or use our free motorbike classifieds!

  9. #8
    Should Get Out More
    Join Date
    Dec 2007
    Location
    South Uist
    Posts
    14,251
    Like
    0
    Liked 31 in 17 posts
    Blog Entries
    2

    Default Re: 1/8th hp electric motor prob.

    Go on, prod it.

    Clamp it to the table so it can't move and prod it.

    Go on, go on, go on.

  10. #9
    back and front Derek Badger's Avatar
    Join Date
    Dec 2007
    Posts
    26,338
    Like
    40
    Liked 17 in 10 posts

    Default Re: 1/8th hp electric motor prob.

    Quote Originally Posted by cheb View Post
    Go on, prod it.

    Clamp it to the table so it can't move and prod it.

    Go on, go on, go on.
    oh, and film it.

  11. #10
    Should Get Out More Big Pete's Avatar
    Join Date
    May 2008
    Location
    Ilkeston
    Posts
    6,265
    Like
    29
    Liked 53 in 27 posts

    Default Re: 1/8th hp electric motor prob.

    could well be the cap is gone, or, depending on the type, it could be the start circuit switch is stuck. got a spare cap ? try it first. if not, have a look under the fan cover for a switch and give it a tap.

    the usual method of starting btw is to slap the outside of the pulley in a tangential manner.

    Also, wheres the pics of the new drill?
    Register to join this UK Motorbike Forum, start a motorbike blog, or use our free motorbike classifieds!

  12. #11
    Mr Solex Zanx's Avatar
    Join Date
    Dec 2007
    Location
    Ilford innit.
    Posts
    19,668
    Like
    7
    Liked 18 in 13 posts
    Blog Entries
    3

    Default Re: 1/8th hp electric motor prob.

    Quote Originally Posted by Big Pete View Post
    could well be the cap is gone, or, depending on the type, it could be the start circuit switch is stuck. got a spare cap ? try it first. if not, have a look under the fan cover for a switch and give it a tap.

    the usual method of starting btw is to slap the outside of the pulley in a tangential manner.

    Also, wheres the pics of the new drill?
    Finally, a grown up

    Drill needs a bit of a rub down, but it's a sturdy bugger and decent steel so the surface rust should come off easy enough. There's another motor in the workshop with a cap, I'll see if it fits.
    Register to join this UK Motorbike Forum, start a motorbike blog, or use our free motorbike classifieds!

  13. #12
    Should Get Out More
    Join Date
    Dec 2007
    Location
    South Uist
    Posts
    14,251
    Like
    0
    Liked 31 in 17 posts
    Blog Entries
    2

    Default Re: 1/8th hp electric motor prob.

    Away and prod it FFS.

    Youth of today, I don't know.

Go Back to Forum My Forum