No speed By thbell1 (Read 904 times)

[thbell1]

History: 2009 Peace Sports 50 cc. not used from 2013 to Apr 2017. 1500 miles on odometer.
Top speed 13-15 mph.
Drained and cleaned tank and tank filter; new gas line and filter; new QMB 139 carb; new 16x13 4 gram variator rollers; and new spark plug.
Top speed 20-22 mph.
On the stand it revs to what I would consider a very good rpm, but off the stand I can hold the scooter still at full throttle.
The parts are from PartsForScooters and the advice from inquiries here last April.
All I need is to quickly get to 30 mph.
Help.
T.Bell

[elcamino121]

Check the clutch and spring assembly in the rear.

[cyborg]

I agree sounds like either the belt is ready to give up the ghost or the clutch arm or two are "frozen in position " and not extending out and grabbing the bell,,,

[thbell1]

Being a first time scooter owner, I am unaware of how to proceed. Are you referring to the centrifugal clutch and how would I determine if the belt and clutch are the issue i.e why does the engine rev adequately with no load?
T.zbell

[elcamino121]

I totally agree with Crawford.

Either the belt or the internal clutch and spring (or both) are slipping. There are many videos on you tube that can walk you through the process of checking and repair of both items.

[elcamino121]

Sorry it was cyborg.

[thbell1]

Being a first time scooter owner, I am unaware of how to proceed. Are you referring to the centrifugal clutch and how would I determine if the belt and clutch are the issue i.e why does the engine rev adequately with no load?
T.zbell

[thbell1]

Thank you. I will look at the videos.
T.Bell

[elcamino121]

You should never be able to hold the scooter back against any throttle, except idle. There is slipping in the driveline. You serviced the variator, now look at the belt first, then the clutch.

[thbell1]

Oct 16, 2017 12:53:58 GMT -6 elcamino121 said:

Check the clutch and spring assembly in the rear.

[thbell1]

Now in addition to all the other items, I have just installed a new clutch and belt with the same result. I can hold the scooter from moving at full throttle.
On the stand with no load the rpm is considerably higher and the back wheel just hums it is turning so rapidly.
Any additional ideas?
T.Bell

[thbell1]

Cent. Clutch assembly is rear is also new.

[thbell1]

I just replaced the belt and the rest clutch.

[thbell1]

That is the belt and rear clutch.

[elcamino121]

Run it with the belt cover off, so you can see if the belt is moving in both pulleys.