Motorized Bicycle Crankshafts 50/80cc & 100cc Side by Side Compared & Measured!

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  • Опубликовано: 1 фев 2025

Комментарии • 27

  • @raymondsoutherland245
    @raymondsoutherland245 2 года назад +3

    I just ordered a new crank for my pk80, I also had to get a high hole piston. Thank you for the knowledge and great videos

    • @BuildBreakFix
      @BuildBreakFix  Год назад

      🍺😉👍

    • @michelmullaney3641
      @michelmullaney3641 Год назад

      Hi Ray. What is the difference between the high hole and or short? Does it affect preformance? I have a pk80: would you suggest or recommend a newer piston for upgrading?

  • @johnnyjoevazquez
    @johnnyjoevazquez Год назад +2

    Just subbed great info your putting up helping me out alot with my issues!

  • @perrabiker909
    @perrabiker909 Год назад +4

    wil a short rod crank fit i the yd100 case as is or i will have to take it apart?

    • @mobdta425
      @mobdta425 Год назад +1

      Im.wondering the aame. . It sounds like an af80 crank in a yd100 bottom end. Besides balancing that would button up the crank portion of the build then?

    • @BuildBreakFix
      @BuildBreakFix  Год назад +1

      yes!! fits fine but you need to buy shims! RMD sells them set 5$ .25mm shims spacers! some even make them out of shim material. not sure how other then water jet though how you could cut that!

    • @tondoslavek2452
      @tondoslavek2452 Месяц назад

      @@BuildBreakFix hi i have an AF80 and i wont to know if it will fit in 100cc engine or what it will need, i dont understand what you were saying in the previous comment, thank you.

  • @michelmullaney3641
    @michelmullaney3641 Год назад +1

    What is the difference between the high hole and or short hole in the piston ? Does it affect preformance? I have a pk80: would you suggest or recommend a newer piston for upgrading?

    • @BuildBreakFix
      @BuildBreakFix  Год назад +2

      Low hole is very low end power. Where high hole is more mid range power. (Port design) Both side by side with the correct rear sprockets can perform the same. High hole piston can be altered a bit more porting wise is why most buy it.

  • @Ertdizzle
    @Ertdizzle 5 месяцев назад +1

    Do they make a 49mm low hole piston if they do where can i buy one

  • @thfpv4974
    @thfpv4974 2 года назад +1

    Question how much side to side wiggle should there be on the shaft

    • @thfpv4974
      @thfpv4974 2 года назад +1

      The reason I asked is because I just took apart my 80cc motor to replace the gasket and I noticed there's lots of play on my crank shaft

    • @BuildBreakFix
      @BuildBreakFix  2 года назад +3

      There is always side to side on cranks normal! Con rods will always have side to side play. Up and down it should have none! That is the one that matters!

    • @thfpv4974
      @thfpv4974 2 года назад

      @Build-Break-Fix Thanks for the input It just seems like there's a Is lot of side aside play Is super happy to hear that it's normal .. Do you happen to have a video to show the inside of a jug and a good piston?

  • @observingrogue7652
    @observingrogue7652 8 месяцев назад +1

    Thank you.

  • @90daysinvegas53
    @90daysinvegas53 Год назад +2

    Brother, I can never hear what you are saying in your videos. The volume always seems to be low even when my own device volume is turned all the way up.
    Can you please talk Louder. Or put the microphone closer to you. Thank you so much

    • @BuildBreakFix
      @BuildBreakFix  Год назад +2

      I don't know why you can't hear me lol. Most people say I'm too loud 😂. I think this is the first time I got told I'm to quiet.

    • @90daysinvegas53
      @90daysinvegas53 Год назад

      @@BuildBreakFix ... Hello my friend, happy Halloween.. 🎃 I have a question.. Can a person put an engine on a Fixie bike and make it work with that tiny little fixed sprocket in the back? Will a 80cc or 100cc have enough power to pull the tiny little Fixie bike sprocket???

  • @KB_Joys
    @KB_Joys Год назад

    So the yd100 cranks won't fit the pk80 bottoms?

  • @MusaToci
    @MusaToci Год назад +1

    I see it as a possibility to modify the block from 50cc to 100cc

    • @BuildBreakFix
      @BuildBreakFix  Год назад

      you cant because transfers are not shaped the same.

    • @MusaToci
      @MusaToci Год назад

      @@BuildBreakFix I want to say with a 50cc crankshaft because I see people on RUclips putting only one 80cc piston with a 50cc head