speedometer issues solved

Discussion in 'General Questions' started by twinkiex, Dec 16, 2007.

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  1. twinkiex

    twinkiex Guest

    I finally got one that works. I tried the Ascent Delta V. It was $25.00. No matter what it didnt work. It was easy enough to program, and I was imputting the wheel size correctly. I even took it to the bike shop and had them program it. So they said it was defective and gave me another. Same thing, it just didnt work correctly. Most of the consumer reviews were very bad. The directions showed it going on the right fork, but consumer reviews said it goes on the left fork. I was getting frustrated! So I upgraded and got a Cat Eye Vectra for $34.00. Its very accurate. My max speed is 26mph and my average cruisingalong speed is 17mph.

  2. smitty

    smitty Guest

    My electronic speedometer worked fine for a couple of weeks then it started to zero itself. I found the fix here, (this forum,) in the form of a "ferrite core" filter, (available at Radio Shack, for five dollars and change). A small clip on device that the speedometer wire wraps through. It filters out the electronic field generated by the spark plug. I have had no trouble since installing it. I hope your speedometer continues to work well, but if not, you may consider looking into this easy fix.

    Attached Files:

  3. atcspaul

    atcspaul Guest

    off to radio shack for me today, thanks:cool:
  4. Skyliner70cc

    Skyliner70cc Active Member

    I buy the cheapest ones from Walmart and have never had any problems with them.
  5. JemmaUK

    JemmaUK Guest

    I bought a £6 Atech off the market - It worked fine :)

    32mph max speed in drop-bar spec

    I will probably be more careful as time goes on - try and cruise at about 25mph.

    Jemma xx
    Last edited by a moderator: Dec 18, 2015
  6. atcspaul

    atcspaul Guest

    how did you affix it please
  7. smitty

    smitty Guest

    To affix the ferrite filter I replaced the zip ties holding the speedometer unit, passing the new zip ties through the coil created through the filter.
  8. atcspaul

    atcspaul Guest

    thanks smitty. i picked up one at radio shack now i have to wait till spring or a warm day to ride. dang i hate winter:cry:
  9. Stryker

    Stryker Guest

    I received the ultimate speedometer for Christmas, a Garmin 305 GPS. This thing is awesome, it not only records my entire ride, it tells me the altitude and % grade that i am climbing or descending. Oh and it tells me exactly how fast I'm going. Yes it is a bit pricey, but i also use it on my pedal bike
  10. BSA

    BSA Guest

    What about the old dial speedometers. Are they any good on motorized bicycles.

  11. Alaskavan

    Alaskavan Guest

    I bought a Planet Bike 9.0 and put it on my trike. The readings were seriously off. It would go from 4 to 7 to 14 to 3, while I was maintaining a pretty steady speed. I'd made a mount for the unit to sense the magnet on the wheel (no forks on the trike). I had the sensor at a bit of an angle to the spokes. I guess the sensor needs to be pretty much aligned with the spokes, 'cause when I changed it, the speedo started reading accurately.