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  1. #111 Re: New QingQi 250 Motorcycles! (QM250-2D, QM260-GY-B) 
    Living the dream...... Rotortrash's Avatar
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    Oh yeah, thanks for noticing China V---I didn't notice the brand --- I had a Kenda K277 on my 200gy, and it gave me great service, but is nothing short of scary in the rain... Good off road traction and wore like iron, but if you ride in rain on pavement--no bueno....It was a fairly hard rubber compund, which made traction suffer in the wet. good tread pattern, but too hard----------again, hope this helps
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  2. #112 Re: New QingQi 250 Motorcycles! (QM250-2D, QM260-GY-B) 
    C-Moto Senior Nima Naderi's Avatar
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    @ MJH: TOTALY AGREE

    thanks everyone

    my old tire show me some scary acts in mud /snow/ and wet asphalt so im not going to have them another time

    china v i think you are right ... as i searched over the web all customers are not fully satisfied with that K270 kenda

    i want to use this bike just for offroad so i think the right one is the right one :)

    cheers
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  3. #113 Re: New QingQi 250 Motorcycles! (QM250-2D, QM260-GY-B) 
    C-Moto Senior Nima Naderi's Avatar
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    my new project

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  4. #114 Re: New QingQi 250 Motorcycles! (QM250-2D, QM260-GY-B) 
    Senior C-Moto Guru MJH's Avatar
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    Is that going on the Jinan 200cc? What size is it?
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  5. #115 Re: New QingQi 250 Motorcycles! (QM250-2D, QM260-GY-B) 
    C-Moto Senior Nima Naderi's Avatar
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    yes if jinan is the other name qingqi !!! it going to be fit on the QINGQI QM 200



    mikuni TM 33.The stock carb of suzuki dr 200 is a mikuni 31 CV type .
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  6. #116 Re: New QingQi 250 Motorcycles! (QM250-2D, QM260-GY-B) 
    Senior C-Moto Guru euphonius's Avatar
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    Dear Nima,

    What are you expecting this modification to accomplish? I'm not teasing. I don't understand carbs very well, so I really have no idea!

    thanks
    jkp
    Shanghai
    2010 JH600 "Merkin Muffley" (in Shanghai)
    2000 KLR650 "Feezer Ablanalp" (in California)
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  7. #117 Re: New QingQi 250 Motorcycles! (QM250-2D, QM260-GY-B) 
    C-Moto Senior Nima Naderi's Avatar
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    CV or constant velocity carbs are not so sensitive and the throttle response depends on the engine rpm not the position of piston slider

    so engine has to make the first move for the diaphragm to get sucked up to the top and the slider following it , then RPM goes up

    there is some kind of delay in this procedure and im expecting the new carb with bigger dimensions and mechanical acc pump and also piston slider

    to act more aggressive and give fast throttle responses .the slider (flat piston in carb ) drive's directly with the throttle cables ... no vacuum needed .
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  8. #118 Re: New QingQi 250 Motorcycles! (QM250-2D, QM260-GY-B) 
    Senior C-Moto Guru euphonius's Avatar
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    Dear Nima,

    Many thanks for that very useful explanation. Better throttle response is a fine motivation!

    good luck with it, and be sure to take pictures of the process...

    cheers
    jkp
    Shanghai
    2010 JH600 "Merkin Muffley" (in Shanghai)
    2000 KLR650 "Feezer Ablanalp" (in California)
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  9. #119 Re: New QingQi 250 Motorcycles! (QM250-2D, QM260-GY-B) 
    Senior C-Moto Guru MJH's Avatar
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    Quote Originally Posted by Nima Naderi View Post
    yes if jinan is the other name qingqi !!! it going to be fit on the QINGQI QM 200



    mikuni TM 33.The stock carb of suzuki dr 200 is a mikuni 31 CV type .
    That is interesting mine has a Mikuni BS 28, the motorcycle manufacturer is Jinan Qingqi…I shorten names from left to right on leap days.
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  10. #120 Re: New QingQi 250 Motorcycles! (QM250-2D, QM260-GY-B) 
    C-Moto Senior Nima Naderi's Avatar
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    OH MY GODDDD

    that was easy as 1.2.3 and may be 4.5.6 and done !

    it starts the engine with first attempt an idle like a a a a don know anything similar !!:)))

    before :





    after:





    that was not a hell of a job to picture ...some bolts off and some on but the result was so impressive ....throttle response was all i expected and it was there ...more power and pulling in low rpm , no strange acts in high rpm and keep pulling ... starts the engine so fine ....chock was in a good position and handy .... i did not mess with it ,carb is in factory mode ..... worthy
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