Welcome to VFRworld.com! Log in or Sign up to interact with the community.

85 VF500F - Need guidance on measuring coil reisitance...

Discussion in 'Mechanics Garage' started by Tee-Dub, Oct 19, 2021.

  1. Tee-Dub

    Tee-Dub New Member

    Country:
    United States
    Joined:
    Oct 9, 2021
    Messages:
    22
    Likes Received:
    0
    Hey Everyone!

    I am struggling with the measurement of primary and secondary coil resistance.

    I have measured:
    two spade tabs that B/W and Y wires attach to. starts at about 5ohms and slowly drops to about 2.9 and 3 Ohms.

    For the secondary, I believe this is measured across the mounting tab and the plug connectors? I get nothing on the mount/plug connection and also between either spade tab and plug connector.

    Am I missing something?
     


    This site may contain affiliate links for which VFRworld may be compensated
    #1
  2. Tee-Dub

    Tee-Dub New Member

    Country:
    United States
    Joined:
    Oct 9, 2021
    Messages:
    22
    Likes Received:
    0
    The Honda manual may be deceiving me? I measured across both secondary connections (plug wire connections) and get 14.8K Ohms. The manual shows the measurement from the frame mount to secondary.
     


    This site may contain affiliate links for which VFRworld may be compensated
    #2
  3. Terry Smith

    Terry Smith Member

    Country:
    Kuwait
    Joined:
    Nov 18, 2013
    Messages:
    2,864
    Likes Received:
    713
    Location:
    Auckland, New Zealand
    Plug cap to plug cap is the usual test for bikes with a 360 degree crank like your VF500F, so I'd have said that sounds about right. This is from the ST1100 manual but I'd expect the 500 would be similar.

    upload_2021-10-20_9-44-47.png
     


    This site may contain affiliate links for which VFRworld may be compensated
    #3
  4. Tee-Dub

    Tee-Dub New Member

    Country:
    United States
    Joined:
    Oct 9, 2021
    Messages:
    22
    Likes Received:
    0
    Great thanks!
     


    This site may contain affiliate links for which VFRworld may be compensated
    #4
  5. squirrelman

    squirrelman Member

    Country:
    United States
    Joined:
    Jul 27, 2006
    Messages:
    10,186
    Likes Received:
    878
    Location:
    Buffalo, NY
    regardless of the measurements, are you getting sparks ?
     


    This site may contain affiliate links for which VFRworld may be compensated
    #5
Related Topics

Share This Page