Disassembling an engine with a PLASTIC camshaft - Suzuki Choinori

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  • เผยแพร่เมื่อ 29 ก.ย. 2024
  • In this video we completely disassemble a Suzuki Choinori engine. Prepare for dozens of 10mm bolts and even some plastic engine components in this longer, raw edit from ‪@SmallBikeStuff‬.
    A huge thanks to Kass and Kentaro for joining in for this in depth video. Remember, we will be repowering the Suzuki Choinori later in 2021. Keep an eye out for future Choinori updates by Subscribing to our channel.
    The Suzuki Choinori was made from 2003-2007 and was the cheapest 2 wheeled transport available at the time. CZ41A
    ¥60,000 ($800 NZD, $600 USD, ฿17,000 THB) was all it took to own a Suzuki Choinori. They became a hit in Japan with over ten million produced.
    Building such a cost effective bike required Suzuki to start from scratch and design a brand new 4 Stroke, 49cc push rod, OHV engine to power the city commuter. Producing 1.5kW (2.0HP), the Choinori could achieve between 30-45KPH top speed and didn't even have rear suspension from the factory.
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ความคิดเห็น • 29

  • @guymacarthur5161
    @guymacarthur5161 3 ปีที่แล้ว +1

    I have a 2015 xr125 that has a pushrod engine. looks to be the cg125 engine from the early 70s. Looking forward to seeing a 3d printed hot cam go int this thing...

  • @kens97sto171
    @kens97sto171 2 ปีที่แล้ว +3

    The stroke looked much longer than the bore, that will help with torque, also that makes the pushrod setup make sense.. much more compact valvetrain than OHC, that also needs cam sprocket and chain and tensioner system. 5500 RPM goes with all that too and low RPM means you can use lighter valve springs, which allows plastic cam gear, and less friction, important in a low HP engine.
    I love small practical machines that server a purpose and are both made to a budget but also well engineered.
    Really cool teardown.

    • @SmallBikeStuff
      @SmallBikeStuff  2 ปีที่แล้ว

      Thats awesome. Thanks for the information! Thanks for watching!

  • @seth8005
    @seth8005 2 ปีที่แล้ว +1

    I got my brand new choinori in 2005.
    It was sitting in my basement garage with only running 3000km since I left it there until lask week.
    last week I decided to start it up and take it to a mechanical an old friend of mine, ask him to tear it down clean it up, change oil...
    and today I have a really good joyride with my choinori just like the day in 2005 when I brought it home from the dealer!
    nice tear down video!👏👏👏

  • @SmallBikeStuff
    @SmallBikeStuff  2 ปีที่แล้ว

    Buy me a Coffee: www.buymeacoffee.com/callumblackmore
    Check out my other channel for more videos!
    th-cam.com/channels/gLp5vbBH21KmFo5XvGYDAA.html

  • @shakotom
    @shakotom 3 ปีที่แล้ว +2

    Lifan swap choinori please
    Thanks

    • @klausbrinck2137
      @klausbrinck2137 3 ปีที่แล้ว

      2stroke swap. no room for lifan. only 49cc 2stroke has a chance. And it´d make it even more lightweight.

  • @vincentvigo2273
    @vincentvigo2273 3 ปีที่แล้ว +2

    Hi I'm from Philippines. Suzuki Choi Nori are popular here, I actually own two Choi unit, got it on abused condition and rebuild/restore it. apparently there's few shops here shipping choi nori from japan even if it's in scrap or in running condition. basically if they got some scrapped unit they will rebuild it to sell it. replacement parts are also available. I think Taiwan are producing it called "KOSO" so maybe if its possible try to purchase and put it in your motor and do a video review about the performance it would be awesome. piston, cvt kit, clutch spring, center spring (compression spring), even cams they have metal cam.

  • @hencobriangarcia8543
    @hencobriangarcia8543 ปีที่แล้ว +1

    Koso Taiwan steel cam

  • @spina100
    @spina100 ปีที่แล้ว +1

    piston rings do rotate

  • @erikwoodward3788
    @erikwoodward3788 3 ปีที่แล้ว +2

    Liked the video. Honda did just come out with a new motor for small bikes. The PCX has a new four valve 156cc with roller rockers with needle bearings, needle bearing crank and an off set piston. Very advanced.

    • @SmallBikeStuff
      @SmallBikeStuff  3 ปีที่แล้ว +2

      Ah that’s awesome. I used to keep up with all Thai Honda model developments when I lived there but since being back in New Zealand I’ve lost track of what they’re up to with some bikes. I’ll have to look into the latest PCX motor.

  • @stckyfngrs745
    @stckyfngrs745 2 ปีที่แล้ว +1

    Great video! I have a question. What is the magnet polarity of the magneto flywheel? Mine has broken magnets and I messed up with the polarities when I replaced them.

  • @tortron
    @tortron 3 ปีที่แล้ว +1

    Plastic cams, Suzuki has been using disposable cams and rockers since the 80s, plastic would be an upgrade

  • @4g63_Everything
    @4g63_Everything 2 ปีที่แล้ว

    The way you hold the engine looks kinda light to put it on a Bicycle frame. How light/heavy it is exactly?

    • @SmallBikeStuff
      @SmallBikeStuff  ปีที่แล้ว +1

      It was very light weight. Now it's in pieces!

  • @motorshazime6114
    @motorshazime6114 3 ปีที่แล้ว

    英語で全然分からないけど友達が元気そうで良かった( ´ ▽ ` )ノ

  • @jalilpangcoga4367
    @jalilpangcoga4367 2 ปีที่แล้ว

    where did you buy those tools?

    • @SmallBikeStuff
      @SmallBikeStuff  ปีที่แล้ว

      My Japanese friend is a motorcycle mechanic. He bought most of them for this disassembly.

  • @broriz531
    @broriz531 3 ปีที่แล้ว +1

    Good info bro... thanks

  • @rachelleclemente1829
    @rachelleclemente1829 2 ปีที่แล้ว

    Suzuki ltz50/quadsport 50 has the same motor. The difference are the variator which attach the rope and the washer on the cam. Choi nori also has electric start variant.

    • @SmallBikeStuff
      @SmallBikeStuff  ปีที่แล้ว

      Interesting tidbit. Thanks for the knowledge!

  • @jaspervanp2346
    @jaspervanp2346 3 ปีที่แล้ว

    I wanna see a re assembly by timelapse lol cool vid Callum

  • @klausbrinck2137
    @klausbrinck2137 3 ปีที่แล้ว

    Choi Nori, the "short hop", which even babyhands can assemble or disassemble... But needs some serious tuning. With a tuned variator (extra belt-reach up the pulley) I´d reach 77kph with 3,2hp (78kg roller and another 78kg me), so, 2hp isn´t that little, one just has to utilize it better, and tune it towards 3hp... In Germany I´m not allowed to drive over 50kph in the city (but of course I do), so, 70 for the Choi Nori should be perfect, since it weights half as much as my old 49cc roller (39 vs. 78kg dry weight)... Surely the cuttest bike ever built... ;-) It´s missing a 2troke cylinder and a rear suspension, or else, perfect!

    • @banzonmemavlog5577
      @banzonmemavlog5577 2 ปีที่แล้ว

      78kg?

    • @klausbrinck2137
      @klausbrinck2137 2 ปีที่แล้ว

      @@banzonmemavlog5577 Yeah, I was 78kg, and the scooter was 78kg heavy too... 156kg weight altogether, i could reach 77km/h with 3.2hp of power. in the middle of the traffic, that was good. What is your exact question?

    • @banzonmemavlog5577
      @banzonmemavlog5577 2 ปีที่แล้ว

      @@klausbrinck2137 what grms flyball rollers is the best for that choinori? i have one but i plan to upgrade to reach add topspeed

    • @klausbrinck2137
      @klausbrinck2137 2 ปีที่แล้ว

      @@banzonmemavlog5577 Sorry, I have no experience with choi nori, but only with other scooter-models. My fast scooter had all tunig done (just slightly tuned, still) when I bought it...