Pretty little 49cc engine!

Discussion in 'Motorized Bicycle General Discussion' started by maniac57, Nov 13, 2014.

  1. maniac57

    maniac57 Old, Fat, and still faster than you

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    I must admit I'm blown away by the obvious quality differences in this engine. It's head and shoulders above any 66cc I have ever seen.
    Too bad the factories didn't use THIS jewel as a baseline for the 66cc engines.
     
  2. maniac57

    maniac57 Old, Fat, and still faster than you

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    The bearings are marked "cau 6203/ps"
    I'm finding tons of matches but none with the "/ps"...most have
    "/rs" instead.
    Anyone know exactly what I need?
     
  3. Greg58

    Greg58 Well-Known Member

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    #23 Greg58, Nov 20, 2014
    Last edited: Nov 20, 2014
  4. maniac57

    maniac57 Old, Fat, and still faster than you

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    Thanks for the link Greg! But no price listed and eternal shipping times make me think a local vendor is the better bet. Your link shows me they SHOULD be interchangeable with the "rs" bearings, but I want one to check before I buy from overseas.
     
  5. Greg58

    Greg58 Well-Known Member

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    I wasn't suggesting you buy from that site I liked the breakdown of what the suffixes meant. I
    At one time sold a lot of bearings when I worked at a local auto parts/machine shop, but that was over 30 years ago so my memory on the meanings is not that good.
     
  6. maniac57

    maniac57 Old, Fat, and still faster than you

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    Exactly! It's been decades since I knew that stuff...but it turns out they are the same common 6203. All I'll have to find are the proper seals for the cases.
    (The bigger crank journal needs the bigger seal)
     
  7. maniac57

    maniac57 Old, Fat, and still faster than you

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    Started a porting thread for this motor in high performance section.
    Watch the Maniac grind stuff and giggle madly!
     

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