Now It Runs!!!

Discussion in 'Whizzer Motorized Bicycles' started by jroyse, Mar 18, 2012.

  1. jroyse

    jroyse Member

    After long days of tinkering, re-wiring, carb rebuilding, exhaust re-fitting it just would not run above an idle. As a last ditch effort I replaced the spark plug and off it went!! Why didn't I do the easy stuff first. Thats what I tell everybody else. This is the 99 Whizzer I got off craigslist for $200. Next will be fixing the big wowee in the rear wheel. Still have no parts or answers from Whizzer USA in Texas. Been over 3 week now.
    Thanks to everyone for the help in getting the bike running.

  2. mason_man

    mason_man Active Member

    Pictures Please!!!
  3. Quenton Guenther

    Quenton Guenther Motored Bikes Sponsor

    Hi jroyse,

    Best to replace the rear coaster brake hub, as the original will most likely destruct.

    The sproke flanges are pressed on and the extra pull of the motor will cause the flanges to move to center. When the spoke flanges move to the center, the wheel is similar to a "wet noodle", and may cause a crash.

    Use a Shimanto, or Hi-Stop hub to replace original.

    Have fun,
  4. mason_man

    mason_man Active Member

    jroyse i'm still using the same original hub that came on my 2000 sportsman with over 2000 miles on it. it might be better going with workman wheels if you need to change from your original ones, you being in your senior years, i don't see you as being a hot rodder or don't over apply your rear brake and you should be ok. Ray

    Attached Files:

  5. mason_man

    mason_man Active Member

    more pics........

    Attached Files:

  6. Quenton Guenther

    Quenton Guenther Motored Bikes Sponsor

    Hi Guys,

    The brakes have very little to do with the new edition Whizzer coaster brake rear wheel issues. The actual problem occurs because of starting the motor. The most pressure on the spokes & spoke flanges is present when the wheel is used in the procees of turning the motor over to start.

    This is a very serious issue as someone could easily be hurt when the wheel goes "limp".
    Although some may manage to get more mileage from the wheel than others, the odds are in the 98% failure rate.

    Every one of my personal collection of new edition Whizzers with the coaster brake have FAILED [not some, but all of them]! Let me say this again...........All of them failed. I have at least 30 broken hubs laying on the shelf. When the first one failed, I thought it was a rare event, and replaced it with another identical hub, after replacing several more I noticed a pattern. After about 30 I concluded it was a real problem and exchanged the remaining hubs with vintage Bendix & New Departure units. After my supply of vintage hubs was depleted, I started using Hi-Stop hubs.

    This is a real safety issue, and I hope no one is hurt thinking these wheels are OK because a few managed to get a few thousand miles on them.

    Have fun,
  7. mason_man

    mason_man Active Member

    I've got workman wheels from back in 2004 for my sportsman, i'm in no hurry.
  8. Quenton Guenther

    Quenton Guenther Motored Bikes Sponsor

    Hi mason man,

    Great wheels! I have Worksman wheels on several of my bikes also.

    Have fun,