Crusing at 10 mph

T

TeddyB

New Member
I cant get my bike to go a smooth 10 mph with the clutch out, the kit was an 80 cc chinese from Kings I believe the sprokett is a 44 tooth,though I never counted the teeth. The bike starts bogging down and I have to clutch it and Im afraid im burning the clutch up. Most places im riding now are rv parks with a posted 10 mph. any ideas.

Ted
 
Try a twenty inch wheel on the rear... Im serious i have one and it allows me to cruise almost at a walk.
 
I find that running mine at idle with a 50-tooth gets it going at more or less 10 mph.

Try reducing your idle. BTW, the idle screw seems does nothing until you get ~100 miles under the belt.
 
I run a 32 tooth sprocket and cruising at slow speeds is no problem. I can almost take of from a dead stop by easing the clutch out with no "Bucking". Of course the 32T doesn't like to climb hills but 42mph can be fun!! I run a 44T on my first bike and it doesn't like slow speeds at all (hence the term "Bucking").
 
TeddyB said:
I cant get my bike to go a smooth 10 mph with the clutch out, the kit was an 80 cc chinese from Kings I believe the sprokett is a 44 tooth,though I never counted the teeth. The bike starts bogging down and I have to clutch it and Im afraid im burning the clutch up. Most places im riding now are rv parks with a posted 10 mph. any ideas.

Ted
Click to expand...

I have a 48T AND a 50T sprocket in the "swap shop".
 
I thought about this post today when i was moving around the shopping center at a crawl. I think the 20" rear wheel is great for this kind of thing, but you are not going to set any speed records...and it will look odd as heck
 
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Actually, I was looking for something in the 30-34 tooth range, nothing fancy, just a plain old sprocket.
 
Joe the small sprockets are for speed. I have a Kings engine and I am not fond of the manufacturer he is using. The porting was the worst of any engine I have, and it was hard to get running well. I ported it and now it is fine. I have a trick for the carb if you think you are willing to drill a small hole in the thing. Let me know and I will tell you what to do. Those carbs are horrible, no idle circuit. Have fun Dave
 
Dave, I am after a little more speed/lower rpm at cruise.

Yes, let me in on the secret....is it a way to put a mixture screw in these carbs?
 
OK it is easy. Turn the carb over with the float off, and near the end that goes to to the engine, drill a 0.040 hole from the float side into the intake runner. I have found that you don't need to do anything else. It then has a way to get some mix air for the idle. I also file a little dent in the slide over the hole, I don't know if this helps but it looks good. Let me know what you think. Have fun, Dave
PS: If it turns out like mine you are going to love the way it runs. Mine will run as slow a good Yamaha, no more balking. Good luck.
PS: One more thing I am running a 39 tooth sprocket and I think it gives the best of both worlds, lower RPM and still pulls well. With the porting and the carb it will still pull off a stop without pedals.
 

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