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70 CC Chinese Quad Clutch issues

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Old May 12, 2008 | 06:58 PM
  #1  
desertrock's Avatar
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Default 70 CC Chinese Quad Clutch issues

I dont know if this is how these quads are but it seems like the clutch slips way to much from a stop. It works great at high speed but it is really hard to get going. It has done this since it was new.

In the sand it is useless on hard dirt it is okay but still slips.
Is this normal or is there an adjustment.

Thanks for your help
 
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Old May 14, 2008 | 01:08 AM
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Default 70 CC Chinese Quad Clutch issues

Yep, that is normal. You may want to look into a sprocket change to help with this problem.
 
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Old May 14, 2008 | 05:02 PM
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Default 70 CC Chinese Quad Clutch issues

Ive noticed the same problem with my son's, especially when trying to go up hills. If he doesnt have a good bit of momentum, he ends up pissing into the wind. Which sprocket, front or rear? When buying replacement sprockets for these, where is a good place to get them?
 
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Old May 16, 2008 | 12:51 AM
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Default 70 CC Chinese Quad Clutch issues

I believe most change the front sprocket. I'm contemplating a sprocket change on my sons 110cc. There is a lot of room for improvement as the quad has way too much top speed. I'm thinking of going down from a 14t to a 12t and see how that helps. I'm looking for more low end grunt and a way to limit top speed at the same time while giving him more throttle.
 
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Old May 16, 2008 | 10:57 AM
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Default 70 CC Chinese Quad Clutch issues

remember changing one tooth on the counter shaft spocket is the same as 4 teeth on the rear,
 
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Old May 16, 2008 | 04:33 PM
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Default 70 CC Chinese Quad Clutch issues

Yeah, my daughter's 2006 70cc Loncin is also pretty weak for bottom end torque. Again, this thing flies when it gets going, but she'll get stuck if she stops at the bottom of a hill. She needs momentum to get up the hills (she's under 70 pounds). On sandy trails or hard packed sand it does OK, but in deep soft sand it's pretty useless. The way it's geared right now, it seems like it would be better for a go-cart or something and the top speed would be safer because of a lower center of gravity.

It has 14 teeth on the front and 34 on the rear. I'm thinking of 12 or 13 on the front and also more teeth on the back. I want the tires to spin on gravel or sand like my 150 does. I wish I was better at the carb adjustments as well. I have it running pretty nicely, but if I quickly fully open the throttle she'll bog (unless already moving, then she flies). I read 2manytoys carb adjustment thread, but still can't get it perfect. Still, I think it's pretty good now. I mean, my daughter never hammers on the throttle anyway. That's just for when I ride it. lol.

I'm surprised to hear that about the 110cc quads. I've seen a few of those 110cc Giovanni mini hummers in the sand and they do just fine. Maybe the ones I saw were re-geared, but they were spinning up the sand and doing donuts no problem. Even uphill in the sand, they seemed to do quite well. My 150 is actually pretty awesome for bottom end as well.

Anyway, best of luck getting your little quads to pull out of the holes!

OffRoadNoob
 
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Old May 18, 2008 | 06:06 PM
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Default 70 CC Chinese Quad Clutch issues

Seeing how were on clutches. I was wondering what that adjustment was on the clutch side. It's a nut with a set screw in the center. Is this where you might adjust for slippage or? And how do you know this at proper adjustment ? It's on a giovani 110cc mini hummer. Thanks
 
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Old May 18, 2008 | 11:22 PM
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Default 70 CC Chinese Quad Clutch issues

When I put new disc in mine I found out I didn't have to even loosen that bolt and screw. All it does is keep a little pressure on a spring loaded end cap on some small bearings. I 'm guessing it's for directing the oil flow the way they want it to go.

The riders weight makes all the difference with my two 110 Loncin. One for my 50 lb. Grandson will pull him where he wants to go. He can climb steep hills from a dead stop. My 70 lb Granddaughter has to get a running start on hers and if she slows down too much she won't make it.
 
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Old May 19, 2008 | 10:34 AM
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Default 70 CC Chinese Quad Clutch issues

The other reason i'm asking is that there is a small oil leak at that nut. I gave it a small snug and it's still leaking. Does anyone else have this problem ?
 
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Old May 19, 2008 | 11:28 AM
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Default 70 CC Chinese Quad Clutch issues

if you engine is over reving and not moving much yes it time for a clutch, if it's not over reving but just doesn't have much power until it gets into the powerband then this is pretty much nornal,
now how to adjust the clutch, the right engine side is a stud and a nut, loose the nut, turn the stud counterclock wise until resistance is felt, then turn the stud back 1/8 turn. then while holding the stud with a screw driver to keep it from turning tighten the nut. this is what the manual says, but i only turn it back appox. 1/16 turn and it seems to work fine.
 
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