2013 super 8 50 2t QUESTION about tranny

[agoncalvesjr89]

hi all. I have a 2013 super 8 50 2t. upjetted to 83 and drive boss swapped, the bike does 35-38 mps flats. from 0-15mph its fast with the powerband, at 15 mph its like the engine bogs down and falls off - slowly accelerating again up to 37mph on flats. Stock everything other than drive boss and 83 jet.  EVerytime at 15 mph weather im approaching it fast in the power band or creeping up it falls off and slows down. DO we think this is a carb problem or transmission. it standard 16 mm carb has a non adjustable needle. Should i replace the variator and spring with lighter weights, or carb.   ... Guaranteed at 15 mph the powerband ends and so does the pulling. The stock kymco 2t exhaust from 2013 as we all know is a joke. Im sure with a tecnigas type r it will raise the performance of all around driving.... but this 15mph dead zone, what is it!!!! Anyone please

[CROSSBOLT]

Could be a resonance "flat spot" in the exhaust.

Karl

[agoncalvesjr89]

Maybe, im going to first grab a new exhaust. It has no real issues other than topspeed at 37 which with the stock exhaust is expected. just wondering if now ill have a more aggressive powerband and top end with the same dead zone at 15... its like the rpm's everything dies at 15mph , if going up a hill forget regaining momentum. I have to hit the hill starting about 15

[aaron8]

how many Kilometers are on the bike? I would pull the cvt cover off and check your rollers for wear

[paceneedsstides]

On my 2013 Like 50 the Tecnigas NextR was my first upgrade other than derestricting and it had same issues as you before but after not only did overall acceleration step up butfrom 25 or 27mph it took off like a rocket to over 40.

[murganhjga]

I have the same scooter, but with upgraded exhaust, and I still have that exact same issue, so may not be the exhaust
Looks like it's a Next R too

[mclark999]

Could be that as it hits the steeper slope on the torque converter, the gearing is too high. Lighter roller weights would help if that was the cause by raising your rpms. On my People, it bogs just a little when it hits the curve.

See the curve in the driver on the right? That's what the Kymco looks like. When the scooter hits that curve it raises the gear ratio pretty fast. kind of like hitting 2nd gear. 



Check out this video on youtube

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[agoncalvesjr89]

Update everyone.

My bike already had smooth boss. Put in new variator naraku standard variator NoN Sport. Put in 7.5 rollers.  Put in green +60 % torque spring.  All this smoothed my whole tranny out. While i had it apart i lubed EVERYTHING up. I believe this also helped a ton. Finally i put on a NARAKU traffic 2t exhaust, after removing the restrictor in the down pipe. (Which wasnt too easy on this pipe). ......... Results are awesome.    44mph top speed, can easily get their and cruise their.  The pulling power and acceleration is very fast. Peppy like a 2 stroke dirtbike. Its like a complete different bike.  smooth hard pulling power all the way to 40mph +. It wanted to wheelie. I have nothing but an 80 jet in their, just big enough. Stock air box. The exhaust and new rollers were crucial.  If i get bigger main jet and go 8 gram rollers i no i can push past 43,,
But this set up is still fast and having this light tranny gives me really goooood acceleration.   THE EXHAUST IS A MUUUUSTTT