Can one grease the flywheel bearing?

Discussion in 'Whizzer Motorized Bicycles' started by MaxGlide, Jun 20, 2010.

  1. MaxGlide

    MaxGlide Member

    The bearing on the flywheel looks like a closed bearing. Can it/should it be greased and if yes how is it done?

    Thanks.... Wayne
    Last edited: Jun 20, 2010

  2. whizzer48

    whizzer48 Member

    If you can pop the seals that is inside you maybe can pack grease in.
  3. WZ507

    WZ507 Member

    It's an unshielded roller bearing that is continuously lubricated by engine oil. The seal is to keep oil in and dirt out.
  4. GearNut

    GearNut Active Member

    wrong application. :eek:
    Last edited: Jun 21, 2010
  5. MaxGlide

    MaxGlide Member

    Oiled by engine oil

    I don't think I explained it right.

    I have a vintage Whizzer J engine and I mean the pulley that moves when you pull on clutch.

    First i don't mix oil with the gas and second the flywheel is not in contact with any parts of the engine that has oil. It looks like a sealed bearing to me

  6. GearNut

    GearNut Active Member

    Hey Quenton!!! We need your expertise over here!!!
    Last edited: Jun 21, 2010
  7. WZ507

    WZ507 Member

    The bearing in the clutch pulley is a shielded roller bearing. If it is dry/loose/noisy, press it out, throw it away and install a new one. If you are on a really tight budget (they cost ~ $10) you could pry the shield off, clean it, regrease, and attempt to replace the shield. But why?
  8. MaxGlide

    MaxGlide Member

    It's what I figured.

    I figured it was a sealed bearing.

    It is not terrible but does feel dry or as though it is not spinning smoothly.

    The $10 is not an issue after what I've put into this thing!!

    I will see if I can find a new one. So I'm guessing one just removes the C clip, puts say the end of a wood dowel and taps it out?

  9. WZ507

    WZ507 Member

    Wayne, Yes you are correct in your approch to removal. When installing the new bearing press it in using contact on the outer race, not the inner race
  10. MaxGlide

    MaxGlide Member


    Thanks....I'll give it a try..... hope its not seized in there.

  11. Quenton Guenther

    Quenton Guenther Motored Bikes Sponsor

    Hi Wayne,

    I have the original NOS bearings in stock if needed. The aftermarket bearings often don't hold up well.

    Have fun,