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Post by seanstr on Nov 26, 2016 11:01:07 GMT -6
This is just me but if my scooter will not go past 45 while only making 7000 I would blame the engine. It seems to me that it does not have the balls to go any faster. Until the engine has more hp I really do not see that it is going to go any faster. No engine is going to give good mileage when run at WOT. Also why is it only 7000 RPMC's? I thought that would be good for 125cc. I need to get to 8000 RPM'S. I see that now. |
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Post by seanstr on Nov 26, 2016 10:18:00 GMT -6
This is just me but if my scooter will not go past 45 while only making 7000 I would blame the engine. It seems to me that it does not have the balls to go any faster. Until the engine has more hp I really do not see that it is going to go any faster. No engine is going to give good mileage when run at WOT. I can get it to go a bit higher in RPM's but only like 500 more maybe. I checked the service manual and the thing says valve clearance is .002 for both not .004. It does tap like it's loose a bit but I can't verify its for mine. I'm going to go pull my paperwork and see. Maybe mine will tell me. Oh, and my compression test is getting with WOT is 185 psi. |
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Post by seanstr on Nov 25, 2016 22:12:59 GMT -6
I don"t know what the differences are between yours and a long (10 bolt) 150 case are but I used an 842. I counted 9 bolts. Talked to mechanic (guy I trust) he stated service manual for the engine states 799 x 19 x 28 but we both thought what if they had different engines that year. He's going to check on diameter of the OEM boss for variator. A short belt is going to limit the range of both pulley sets, the variator and the clutch. This is exactly what I see. The 799 is not going all the way. On take off the rear clutch pulley needs the belt at the top. At max speed the variator has the belt at the top. The performance variator is slightly larger in diameter and if the motor has enough balls the belt will climb still higher with the larger dia pulley. With the longer 835 belt it goes to edge of the stock variator, however still only getting to 45 mph. RPM's are always at 7000. It feels like the 835 is slightly loose. My next question. If the 1.5k contra spring make belt tighter, will the 2k spring make it even tighter and hopefully tight enough to take up the slack? Also if the slack is taken up and it stops being sloppy, will I then be able to properly tube this CVT with weights? Comment: when I get the malossi variator installed (whenever it gets here) I understand it will be better for take off and smoother over all performance. This combined with the strongest contra spring, longer belt, if I still don't get too mph 55+ I'm going to go for mpg. Right now I'm getting only 61-62 mpg. It should be 80-90 mpg. If i give up on the mph, what is the best combination for fuel economy? |
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Post by seanstr on Nov 25, 2016 18:33:25 GMT -6
I am sure that the scooter is starting in second because the belt is too short.
Put on 835 belt and left the 9 gram rollers. Still don't like the take off.
I think the 835 is too long but the 799 is too short.
I'm at a loss.
Any ideas would be great.
Do one change and check results.
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Post by seanstr on Nov 25, 2016 7:52:47 GMT -6
So the ride in to work was weird.
I had bogging again. I adjusted the air fuel mixture screw. It helped but it still bogged down once more, I'll report again on way home.
My initial thoughts are that 9 gram rollers are incorrect. However I'm still not getting good take off. It's still acting like it's in second gear from idle. If the belt is too short or too loose it would do this correct?
I had the cover off watching the belt. It's sloppier than I like. It's a new belt. 799 x 19 x 28.
I still think the longer belt, with stronger contra string (2k) then play with the weights?!?
Do one change and check results.
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Post by seanstr on Nov 24, 2016 20:35:46 GMT -6
OK for now, OEM contra spring, 9 gram rollers. 799 x 19 x 28 belt, what is supposed to be on a Lance 125cc engine.
Koso variator still not in. Still waiting for 2 k contra spring.
Will drive to work, hoping for better top end.
Do one change and check results.
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Post by seanstr on Nov 24, 2016 15:01:14 GMT -6
He ground of just a couple millimeters he did it himself,,, he just made sure it was a clean square cut I'm thinking my diameter is too large. |
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Post by seanstr on Nov 24, 2016 13:21:33 GMT -6
One member on itr have a problem in his variator and ground a few mm's off his variator boss ,,, now his variator closes all the way and belt rises all the way to the top How? Go to machine shop? How to know how much? |
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Post by seanstr on Nov 24, 2016 12:25:22 GMT -6
Are you sure they are not marked NCY? John Yes, that's it, lol |
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Post by seanstr on Nov 24, 2016 11:51:56 GMT -6
I would keep the Koso, put back the stock contra spring 835 belt. Now keep in mind what is going on inside the cvt. The crankshaft is spinning, centrifugal force pushes the rollers away from the center of the variator. The heaver the weights make pushing the variator opened at lower rpm, lighter weights need more rpm to push the the rollers away from center. With that said increasing rpm gives you more off the line power/speed and the umf to pull the hills. A 120 ponder does not need that much rpm to get up and go. A big heavy guy/load you need the extra rpm of the crank to pull the load. The faster the crank spins you get power from momentum transferred to the wheel. So your a big boy lighter weights. check this outI hope this helps . John I have the 1.5k spring in. I had the 835 on this morning. Did a test run with 10 gram rollers. The belt was slipping. Got a nice black mark on variator. Could only get to 45 mph. Belt was slipping at take off. Took 835 off, left 10 gram rollers. Much better low end. Still only getting to 45mph. I haven't received the koso yet. I have another thought. Since I really don't know what the shop did I'm guessing. Bare with me. What if they replaced the stock variator with a performance variator but it came with maybe a different, thicker boss. Then the stock 799 x 19 x 28 belt won't travel all the way up the front pulley (variator). I'm doing a lot to get OEM performance back. If they did stuff that I don't know about I'm guessing. I will hope the koso makes a difference. I was thinking on going even lighter on the weights to 9 grams and retesting. I will check out the link next. Edit: I think this because I don't Lance/Sym sent it out with NYC variator guides. The 3 guides for the ramp. NYC stamped on them. |
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Post by seanstr on Nov 23, 2016 13:50:06 GMT -6
Do one change and check results. Got a 2k contra spring coming. I guess I'll do what I stated in my signature, Do one change at a time and check the results. |
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Post by seanstr on Nov 23, 2016 12:30:14 GMT -6
Do one change and check results.
Got a 2k contra spring coming.
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Post by seanstr on Nov 23, 2016 8:23:02 GMT -6
I was going to suggest the 835 being you don't have 10 cvt cover bolts.You say you have 9 was one missing (the tenth) or did you maybe count an extra bolt some how. John Do one change and check results. You were right, the 835 is correct, thank you. I am having problems still The RPM's seem too low sound wise, not with TACH. That is still getting around 6000 at 40 mph. I am at 12 grams. I didn't like the 11 grams. I think I might need to go lighter still even with the 1.5k contra spring. I have a tuning kit of rollers coming. I will play with it soon. I am a big guy so I thought I need heavier weights. I weigh 230 and am 6'3". But,... It's not performing well long term. The drive in to work seems like a good check of reality. some hills, and some straight aways. Lots of lights. Round trip is like 18 miles. I need suggestions for weights. I would like to stop having to play with this and finish up. I may get a 2 k contra spring as I feel it could still be tighter. |
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Post by seanstr on Nov 22, 2016 20:10:32 GMT -6
I was going to suggest the 835 being you don't have 10 cvt cover bolts.You say you have 9 was one missing (the tenth) or did you maybe count an extra bolt some how. John It fits well, the 835, but then it's loose, so I put the 1.5 k contra spring, better. Taking a break, I found a broken trunk mount support. I'm going to get that welded first. With the 1.5k it's not loose. |
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Post by seanstr on Nov 22, 2016 7:47:43 GMT -6
I was going to suggest the 835 being you don't have 10 cvt cover bolts.You say you have 9 was one missing (the tenth) or did you maybe count an extra bolt some how. John It fits well, the 835, but then it's loose, so I put the 1.5 k contra spring, better. Taking a break, I found a broken trunk mount support. I'm going to get that welded first. |
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