Legendary/Speedhut speedo/tach

Discussion in 'Norton Commando Classic Motorcycles' started by drones76, Jan 10, 2018.

  1. drones76

    drones76

    Joined:
    Aug 1, 2011
    I purchased a combo unit a few weeks ago. After wiring it up(Negative Earth) on my '74 Commando, I took it for a spin. Seemed to work ok for about a few 10ths of a mile. Then the speedo and tach gauges froze. I stopped, powered off and rode it again. Similar results then it started going wacko. Mileage jumped up to 66,000 miles. The trip meter did similar. I contacted Legendary and sent it back. A month later it came back and I put it back on today. Started off fine for about a half a mile. Again the gauges locked up and it is not working again. They said they changed out the entire guts of the device. Has anyone else used these devices and have you had any issues. Checking to see if maybe I have missed. I will put a call into them tomorrow.

    Thanks
     
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  2. blaisestation

    blaisestation

    Joined:
    Apr 10, 2008
    Hi,
    I have speed hut gauges on mine (both speedo and tacho)
    And have had no problems after 2 years of use .
    also alot of riding in the rain . + earth
     
  3. arch

    arch

    Joined:
    Jul 22, 2004
    Which gauge do you have?

    I am thinking about getting this one for a non norton project.

    https://www.dimecitycycles.com/4-in...es-electronic-gps-speedometer-tachometer.html

    I would be interested in knowing the outcome of your problems.
     
  4. Triton Thrasher

    Triton Thrasher

    Joined:
    Feb 10, 2009
    Electronic clocks?

    Is your ignition satisfactorily suppressed?
     
  5. drones76

    drones76

    Joined:
    Aug 1, 2011
  6. drones76

    drones76

    Joined:
    Aug 1, 2011
    Yes they are the same one in the link above. It may be an issue with suppression. I have a Pazon EI. What are the recommendations to suppress interference?
     
  7. RoadScholar

    RoadScholar VIP MEMBER

    Joined:
    Dec 28, 2008
    Find some NGK 5K ohm caps.
     
  8. Triton Thrasher

    Triton Thrasher

    Joined:
    Feb 10, 2009
    I had a GPS speedo that would stop working suddenly. 5 kohm plug caps fixed it.
     

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