Gru Bee?

Discussion in 'Motorized Bicycle General Discussion' started by Youngbird, Dec 6, 2008.

  1. Youngbird

    Youngbird Vendor

    Joined:
    Dec 2, 2008
    Messages:
    129
    Likes Received:
    0
    OK, so it was time to re-think some things. Conclusion was that overall displacement isnt everything, especially once I started to look into the 50cc Honda or their clones. The GruBee drive setup looks sweet too. So now Im thinking a 4 stroke inframe with the Grubee setup. Now....whats a good source for the GruBee stuff? Anyone have suggestions? Thanks, Jim.(c)
     
  2. misteright1_99

    misteright1_99 New Member

    Joined:
    Mar 21, 2008
    Messages:
    716
    Likes Received:
    0
  3. Youngbird

    Youngbird Vendor

    Joined:
    Dec 2, 2008
    Messages:
    129
    Likes Received:
    0
    Thanks for the input Misteright1. Ive been eating up all the Grubee info. I can find and Im thinking Im sold on them. Quieter, smooth and dependable. In Frame 4 stroke it is.(c)
     
  4. misteright1_99

    misteright1_99 New Member

    Joined:
    Mar 21, 2008
    Messages:
    716
    Likes Received:
    0
    I love my Grubee 2 stroke. Wish they sold the new GenII here in the States.......
     
  5. xPosTech

    xPosTech The Old Master Motorized Bicycle Builder

    Joined:
    Oct 23, 2008
    Messages:
    209
    Likes Received:
    0
    I just checked out the 4 Stroke Installation Manual at Bicycle-Engines.com. They're a little vague on some things. Another problem I have with it (the manual) is they don't know the difference between concave and convex.

    Paste from the manual:

    The sprocket has two sides. One side is shaped like
    the inside of a bowl (convex)
    . The other side is shaped like the outside of a bowl (concave). It is sometimes difficult at this point in the installation to determine whether to install the sprocket with the concave side facing in or out. This is a judgment call based on how close you want the chain to the tire when the motor is installed. In the case of the Schwinn Jaguar, the sprocket was installed concave-in (facing the bike).


    I learned in elementary school that concave was dished in, like the mouth of a cave. I never had a problem confusing an inny with an outy. Apparently the guys at BEc went to a different school. :rolleyes:

    The instructions reference concave and convex when mounting the sprocket. Which leads me to question which side of the sprocket they're talking about. If you look at the inside of a bowl it's concave. Do they mean their concave or the real concave? :confused:

    It sorta makes me wonder if they fudged anything else up. :eek: I think I'll just build my own kit. Well . . . at least to where it meets Pablo's kit. (^)

    Ted
     

Share This Page