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Thread: Is CG125 Clutch Noise Normal? Help

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    Default Is CG125 Clutch Noise Normal? Help

    Hello CG lovers,

    recently I bought a new Honda CG125 Euro II model 2016, I notice some weird noise when releasing clutch in 2nd or 3rd gear, This noise is not very obvious initially but as soon as engine gets hot, the noise becomes obvious.
    I am not much worried bcoz the sound seems familiar, I also noticed the same noise in other CG 125 bikes too, in 2007 I had model 2003 and that have the same problem too. The only thing makes me confuse is that I can't find any related information regarding the causes of that issue anywhere on the internet.
    the other thing I dont understand is that, why just CG125 have this problem why not CD70 have it? is there any fundamental difference in clutch plates of these two bikes.

    So I request to all CG users to kindly comment on this and share their own experience and tell me if it's just me or it is a general CG125 problem. if it is general problem, then why the related info or complains are not available on internet? is there any solution for that?

    Thanks.

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    Default

    Quote Originally Posted by asimzb View Post
    This is the same issue that we r talking about here. Its not chain problem.
    This is the classic CG problem of clutch plates and also varies with engine oil and temperature, when u drive 20-25kms the engine gets hot and oil becomes thin which makes clutch plates slipping more frequently. U wont notice this noise initially because oil is thick and clutch plates stick to each other smoothly

    sent from Motorola device
    I personally believe using engine oil have api sn/sm grade creates this issue as it contain friction reduction additive like molybduem,ester etc and since AHL is not mentioning api grade on their oil I think that the problem starts from that point

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    Quote Originally Posted by IceCold View Post
    Is it possible that the issue is more related to newer CGs i mean after 2006 on wards and specially euro ones? What model was your 1st Honda?
    No brother, in my little experience, this is in almost every CG i have ridden, my last Honda was CG 2003 model and that also had this issue, my cousin's Hero 125 had this problem too. Actually most common people don't consider it as a problem, may be it is not a problem technically, but it surely feels weird when it happens, like clutch plates are slipping.

    sent from Motorola device

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    it's due to design of clutch plates,changing the housing doesn't solve the problem......2014,2015 even 2006 model have this problem

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    In my personal opinion, changing clutch plates may not solve the problem. Using a very thick oil may solve the problem or delay it but its not a solution because using extra thick oil makes engine parts hard to move due to high density of oil which is also not good for engine that is designed for a particular grade of oil thickness.

    As everyone knows, CG is very old engine technology, 1970s i guess. Atlas Honda could solve this issue by changing the design of gear/clutch housing, but this will be expensive to them because it requires a whole new manufacturing capabilities and hard work, and as everyone know they are selling these original CG design very nicely, why would they bother to take this step.

    sent from Motorola device

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    Quote Originally Posted by asimzb View Post
    In my personal opinion, changing clutch plates may not solve the problem. Using a very thick oil may solve the problem or delay it but its not a solution because using extra thick oil makes engine parts hard to move due to high density of oil which is also not good for engine that is designed for a particular grade of oil thickness.

    As everyone knows, CG is very old engine technology, 1970s i guess. Atlas Honda could solve this issue by changing the design of gear/clutch housing, but this will be expensive to them because it requires a whole new manufacturing capabilities and hard work, and as everyone know they are selling these original CG design very nicely, why would they bother to take this step.

    sent from Motorola device
    Liqui Moly oil is the best solution .. LM 20w50 Racing .It's worth to give it a try
    Catch Me If u can...

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    Quote Originally Posted by Eur0_2 View Post
    Liqui Moly oil is the best solution .. LM 20w50 Racing .It's worth to give it a try
    The problem is, it is not available in my city,

    sent from Motorola device

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    My cousins cd 70 dream 2015 makes the same sound when shifting from second to third or third to fourth gear, I really didn't think it was a problem.


    Sent from my iPhone using PW Forums

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    Does it happen when releasing clutch lever? Or when just shifting gears? Both are different scenarios

    sent from Motorola device

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    I know what you're talking about, the clutch lever makes the noise .


    Sent from my iPhone using PW Forums

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    I thought cd70 and cd70 dream have same engine/gearbox.
    Never heard this problem in cd70 by the way but dream version might be different.

    sent from Motorola device

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    Quote Originally Posted by asimzb View Post
    The problem is, it is not available in my city,

    sent from Motorola device
    kixx oil 20w50.. also good.. give it a try .
    Catch Me If u can...

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    Quote Originally Posted by ra1069 View Post
    I think you have misunderstood. You will get the parts from Fazal Traders Aurangzeb Mkt near Radio Pakistan. Javed Autos in Lines area is Mechanic. If you intend to get parts and fixed by mechanic in sukkur then go to Fazal Traders.

    Regarding top speed I have been riding motorcycle since 28 years but never gone beyond 80 kms that too when I was 20 year old. Normally I drive at 50 kms. So I can't help you in this regard.

    But my advice is that Life is precious so avoid unnecessary adventures.
    Very rightly explained about speed 👍🏿


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    ~ Be a responsible citizen and always drive safely ~

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    Quote Originally Posted by asimzb View Post
    This is the same issue that we r talking about here. Its not chain problem.
    This is the classic CG problem of clutch plates and also varies with engine oil and temperature, when u drive 20-25kms the engine gets hot and oil becomes thin which makes clutch plates slipping more frequently. U wont notice this noise initially because oil is thick and clutch plates stick to each other smoothly

    sent from Motorola device
    You are mistaken in understanding how muliti visocity oil works 20W-50 oil will actually be more thicker when hot

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    Engine needs oil that is thin enough for cold starts, and thick enough when the engine is hot. Since oil gets thinner when heated, and thicker when cooled, we use multi-grade, or multi-viscosity oils. These oils meet SAE specifications for the low temperature requirements of a light oil and the high temperature requirements of a heavy oil. This is the best of both worlds and is accomplished by using special additives to increase viscosity with increase temperature.

    Although 20W-50 will have more viscosity than 20w-40 at high tempuratures, both oils will be relatively thicker initially when bike is started due to being cold, so in the start few kms this clutch problem is not that prominent....and since these are air cooled engines they do tend to become quite hot resulting in excessive thinning of oil....if the distance traveled is more.
    If you ride like there's no tomorrow, there won't be.

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    Exactly brother. that was my point too.

    sent from Motorola device

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    Quote Originally Posted by saboor73 View Post
    You are mistaken in understanding how muliti visocity oil works 20W-50 oil will actually be more thicker when hot
    You are saying opposite of the "Law of Thermodynamics".

    sent from Motorola device

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