Needle bearings?

Discussion in 'Motorized Bicycle General Discussion' started by SeattleMike, Apr 10, 2008.

  1. SeattleMike

    SeattleMike New Member

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    Do you guys think this looks good?:
    70cc ACME Round Head Motorized Bicycle Engine Kit - eBay (item 320236483584 end time Apr-12-08 10:16:54 PDT)
    I guess this engine kit has modified needle bearings, and a couple other mods, I don't quite understand enough to know what the benefit of these mods are. I'm looking for a new 70/80cc engine, and if this is better I might as well get it.
    When I originally bought my first engine, it was called 80cc. Is it actually NOT 80cc's? I get the impression that it is 70cc, and I think I read somewhere that they are actually 65cc or something. Whats the deal?
     
  2. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    Actually they are 67.5cc's.
     
  3. deacon

    deacon minor bike philosopher

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    I think all the engines come with needle bearings now. They are an improvement over the old brass inserts they used in the beginning. But I think they all have them now.

    I'm not sure that tiny bit of difference in the cc's makes a huge amount of difference.

    If I were looking for a new kit I would be looking at the clutch handle since it is the only real difference as far as I personally can see. I'm sure some of the sellers will point out my obvious errors in thinking. I also would not pay much more for the better handle since you can buy it after market for a few bucks.
     
  4. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    "I think all the engines come with needle bearings now. They are an improvement over the old brass inserts they used in the beginning. But I think they all have them now."


    You can still buy the "old style" bushed engines from that's dax (ebay I.D. dacscommm), there are some on there right now.

    Sometimes, a bushing is better in the long run....more surface area. We'll have to see how the new engines hold up in comparison to the old style.
     
    #4 Bikeguy Joe, Apr 11, 2008
    Last edited: Apr 11, 2008
  5. paul

    paul Active Member

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    from my understanding also the bearings will not fit the bicycle motor that has the old brass style
     
  6. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    You are correct sir!
     
  7. ran49

    ran49 New Member

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  8. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    Be advised that this seller has not been the best of experiences for several folks in the past.

    I'll leave it at that.
     
  9. ran49

    ran49 New Member

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    Bikeguy
    Thanks for the heads up.Ron
     

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