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Discussion Starter · #1 ·
Hello Guys. Maybe some one can help. 49 cc pocket bike not getting much power to rear wheel. Wheel will turn slowly. Rev it up real high and still not much power. Will just creep. Idles and starts fine.:mad:
Also when i shut off lights after a couple of seconds bike will start chirping from horn. chirp chirp chirp
Thanks
Avant

Bike was sitting for 7 yrs
 

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You have an X series Mid -Bike, with a 49cc piston port engine and a 15mm Walbro WYK pumper copy carb. Even a new engine in the bike it will do about 25-30 mph. The biggest problem is your bike weight, 70 to 90 pounds, alot for a 3hp engine. My A1 Cag is less than 40lbs. My piston port scooter ia about 48lbs. You can do alot of mods to the engine, and double your horsepower. My scooter has a Boosted306 ported head/cylinder. I also built one with an alum alloy head on a cut stock cylinder. The wiring on these China bikes sucks, probably wires touching inside the switch.
 

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Sounds like youre gonna have to remove the trans ,,unstick the clutch and deglaze the bell and pads.............also make sure the wheels roll smoothly and the brakes arent binding...
 

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Discussion Starter · #4 ·
Thanks guys. i guess pulling the tranny and cleaning out everything will help. I am not talking about hp to the rear end just will not turn well can not ride it just creeps.
Avant

Is there a how to on pulling the tranny and deglazing on website?
 

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Thanks guys. i guess pulling the tranny and cleaning out everything will help. I am not talking about hp to the rear end just will not turn well can not ride it just creeps.
Avant

Is there a how to on pulling the tranny and deglazing on website?
No but its pretty simple on that X7...........6-7 bolts to remove the trans and two bolts to remove the clutch.............

to deglaze the pads you take 100 grit and remove the shine til the pads are evenly dull and then you sand the glaze out of the drum using a circular motion........
 

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Sometimes people ride them till there is very little or no pads left on the clutch arms. That will slow you down, and they glaze and the bell gets shinny. 100 grit works great on both.
 

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Youll also find the bolts will be massively oxidized to the pads when trying to unscrew it snapping the spring,,,a lil penetrating oil and a lil heat with a plumbers torch will get the shoes off.....I had clutches so oxidized they were a boetch to remove...........

De oxidize the pad mount holes and polish them so they throw out smoothly....de-rust the bolts and polish them too.....





 

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I think the general rule is replace the pads when they get down to 1mm or .040".
 
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