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Post by johnwing on Jan 29, 2016 13:16:04 GMT -5
I have just bought a 2002 50 2t Vino. Top speed is about 36mph. The problem that I am seeing is it real slow off the line until you get to about 18-20 that it takes off. Is there a pilot jet or something in the carb that might be clogged? The top speed seems to be good just the bottom end seem too slow. Any ideas? Thank you.
Johnwing Milwaukee WI P.S. What would be the most cost effective way to get this Vino a little faster on the top end as well?
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proarturs
Scoot Member
2 stroke master race
Posts: 73
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Post by proarturs on Jan 29, 2016 13:20:41 GMT -5
The carb could be the issue, but more likely I would say that the rollers are worn out or to heavy or it could be a worn belt.
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Post by johnwing on Jan 29, 2016 13:53:23 GMT -5
I think it is all stock. So should I try a belt first? Are the belts all the same? Would the slow take off and top speed both be belt issues? Thanks.
Johnwing Milwaukee, WI
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Post by tiny on Jan 29, 2016 15:52:59 GMT -5
I agree with proarturs replace the rollers they are most likely flat spotted. But depending on how long the old rollers where in there the ramps might have also divots worn into them from the old rollers that will stop any new roller from moving smoothly.(happened to me) Your best play would be to get a Variatior kit that comes with rollers and a Contra Spring and get a new belt to go along with it. Sort of like this one. I have it on my '01 Vino scootertuning.ca/en/variators/7002-variator-kit-stage6-sport-pro.html
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Post by spaz12 on Jan 29, 2016 16:05:00 GMT -5
You should go over the entire scooter and check it out. Look to your left and you'll see a YouTube button. From there find Brent's videos on PDI's. This is a good way to get to know your scoot and find any problems with it.
That said, I also think that you have an issue with your rollers. Your belt being worn will cause a loss in top end speed, but it shouldn't cause acceleration loss. Take the cvt apart and you should find the problem. Hopefully it's just worn rollers. Or rollers that are too heavy.
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Post by moofus02 on Jan 29, 2016 17:03:25 GMT -5
Yamaha likes heavy rollers but they don't like us lol. Probably has 7.8 gram rollers in it like the Zuma. Around 6 will get it revved up. I think they put them in heavy so you can't over rev them while they are under warranty lol
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Post by Fox on Jan 31, 2016 23:31:32 GMT -5
I agree that the rollers/variator may be old and worn out but they could just be too heavy as stated by moofus02. If the weights and variator look good then weigh the weights one at a time on a gram scale to see what you have there. The previous owner may have installed some heavy ones or even mixed them so you have two different weights in every other slot. If the belt is worn then a new one may increase top end speeds cause it's wider so it will travel out further on the variator. Could also be that the contra spring is old and weak so your clutch opens too soon. There are three little plastic guides on a variator back plate that can and will sometimes break/melt/disintegrate and when that happens it causes the variator to hang up. I'm also thinking a new spark plug, a good carb cleaning and cleaning the air filter may make a world of difference. Check/change the oil in the gear box and make sure the tires are inflated correctly. Scooter tires can look inflated when they are in fact low on air.
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Post by sublunacy on Jan 31, 2016 23:53:44 GMT -5
6 answers in a row saying you should empty your wallet. nobody suddesting a tune-up and check-over. nobody asked a single question or had any suggestions on how to measure a belt or check for roller wear. please explain how the new stuff is going to fix it when you have NOT found a single problem so far?
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Post by niz76 on Feb 1, 2016 0:27:59 GMT -5
....He says as he adds absolutely NOTHING of value to the conversation... lol. Sorry just found that, well- lunacy.
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Post by Fox on Feb 1, 2016 0:34:40 GMT -5
6 answers in a row saying you should empty your wallet. nobody suddesting a tune-up and check-over. nobody asked a single question or had any suggestions on how to measure a belt or check for roller wear. please explain how the new stuff is going to fix it when you have NOT found a single problem so far? I don't see anything in your post that suggests any course of action at all. Just criticism of everyone else' posts thus far. If you would have read the original post carefully, you would see that he asked how he could get some more top end out of it. P.S. What would be the most cost effective way to get this Vino a little faster on the top end as well?] The answer is almost always going to be buy something and install it be it a BBK, jetting changes/air filter swap, new variator, an up-gear kit or a new belt. The only thing I told him to buy was a gram scale which every scooter owner should have in my opinion and a new spark plug. If you read my entire post you would see that I suggested a full carb clean, air filter clean and a new plug. I suggested he get a new spark plug since it's an older 2 stroke with a plug in it that could be old as hell and they are cheap as hell so why not replace it? If you can't add anything constuctive, it would be better you post nothing than to critique others here who are freely giving of their time to help others.
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Post by spaz12 on Feb 1, 2016 2:07:12 GMT -5
6 answers in a row saying you should empty your wallet. nobody suddesting a tune-up and check-over. nobody asked a single question or had any suggestions on how to measure a belt or check for roller wear. please explain how the new stuff is going to fix it when you have NOT found a single problem so far? I would be in the six in a row figure you mentioned, yet I never said to buy anything. I also told him to go over the entire scoot, so get your facts straight.
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Post by tiny on Feb 1, 2016 5:04:49 GMT -5
I suggested new rollers because what he is experiencing I also when thru on 2 scooters and what worked was new rollers. As for top speed it still might have the restrictor in the variatior. None of us knows till the side cover is taken off and all parts examined to see what's worn out and needs replacing. We are all just giving suggestions going off of past experiences nothing more.
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Post by 90GTVert on Feb 1, 2016 6:57:45 GMT -5
6 answers in a row saying you should empty your wallet. nobody suddesting a tune-up and check-over. nobody asked a single question or had any suggestions on how to measure a belt or check for roller wear. If you look back, even the very first reply suggested the possibility of worn parts, and did not say to run out and buy new ones. There are others as well suggesting maintenance related tasks. One of my first suggestions is often a thorough CVT check and clean. I didn't chime in because it seemed there were some good suggestions. Sometimes we don't include every bit of info that could be included in a post, like exactly how to check rollers for wear or a belt or whatever the case may be. Here's some info that should help out if the OP needs more info on checking the CVT : CVT Inspection. Here are a few ideas in case the OP doesn't have an impact and all the sockets for the CVT : LINK. Those links cover most questions, and then we're here if more help is needed. Regarding emptying the wallet, please note that the OP was also asking about performance upgrades. There are things that can be done for free or low cost. You can find info here on porting, timing, squish, reworking cylinder heads, carb tuning, building a pipe etc... That stuff isn't for everyone. Some people don't wish to go much beyond more of a "bolt-on" approach, though the carb and CVT tuning are skills that you should learn even for routine purposes.
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Post by johnwing on Feb 1, 2016 22:04:41 GMT -5
Thank you to everyone for all your help. I'LL check the belt first and put in a new spark plug. If the belt is bad is it something I will see or do I need to measure it and if so how wide should it be? The rollers how do you know if they are bad?
Johnwing
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Post by spaz12 on Feb 2, 2016 0:04:23 GMT -5
They'll have flat spots in them. Small flat spots aren't too bad but you should think about getting new ones soon.
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