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  1. #1 Newby 
    C-Moto Noob
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    Hi all,
    thanks for the inclusion on the forum. looking at maybe jetting up the carb or upping the rear sprocket any advice would be appreciated. I'm on a Lexmoto venom. cheers
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  2. #2 Re: Newby 
    Senior C-Moto Guru humanbeing's Avatar
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    What's the WMI https://en.wikipedia.org/wiki/Vehicl...rer_identifier (ie. the REAL maker) of that bike?
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  3. #3  
    C-Moto Guru
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    It is senke.
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  4. #4 Re: Newby 
    Senior C-Moto Guru humanbeing's Avatar
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    aka Senke Raptor http://www.nanlianmotor.com/cn/raptor/main.html
    [Parts] http://www.razory.de/bilder/senke/spares/SK125-22.xls From that excel file we knew some market's stock carb = Pz27...

    The newer CPZxx is more hassle to tune (VERY lean from factory...)
    ... http://www.chinariders.net/showthread.php?t=16139 | http://www.chinariders.net/showthread.php?t=16820
    Anyways add 1-2 next size (Keihin main jet) is a safe bet...
    Last edited by humanbeing; 09-23-2016 at 05:01 AM.
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  5. #5 Re: Newby 
    Senior C-Moto Guru culcune's Avatar
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    Welcome! What are the stock sprocket sizes? Sometimes, people have found going up a tooth (or down depending on what kind of riding they plan to do) or two on the countersprocket makes a big enough difference for them, and they find they don't need to deal with the chain (i.e. cutting it or having to get a brand new chain) that usually follows changing a rear sprocket. My guess is that you are looking for a higher top speed and/or less 'buzz' at top speed?

    As far as carbs go; on chinariders.net, people have recently found the latest batch of Chinabikes have carbs that are not only inadequate in their opinion, but are not as adjustable as they used to be. An Ebay bought (probably fake) Mikuni carb has pretty much fixed it for them. That has been the solution for Canada and US via a few Ebay sellers selling Mikuni carbs. I am assuming there is a seller or several on Ebay in the UK sitting on a pile of fake Mikuni carbs as well. Of course, the advantage of even the fake Mikunis (assumed to be fake due to the price) is that the jets are plentiful to find vs. the stock carbs which have few to no options. People have been pretty much 100% satisfied with the Mikuni carbs once they get the jetting sorted out.
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