OP
@randyjaco avatar
UTC

Member
2019 GTS 300
Joined: UTC
Posts: 23
Location: Friendswood, Texas USA
 
Member
@randyjaco avatar
2019 GTS 300
Joined: UTC
Posts: 23
Location: Friendswood, Texas USA
UTC quote
I have wrenched on motorcycles and cars all my life, but am new to variators. My 300 GTS runs great and am very happy with it. But in slow speed maneuvers (1-3 mph) I am having some issues. With the M/C, one just slips the clutch. With the Vespa, it is a little difficult to blip the twist grip to get the right amount of RPM to slightly power the rear wheel. With medium to full throttle, the variator does great. I am also noticing some rattling/clanking by the variator at times when I am mildly accelerating. These are nits, but I am curious if they are possible indicators of problems to come?

BTW: It's 2019 model with nearly 30k miles. The previous owner maintained it very well, but I have no idea what has been done to it over its lifetime. Since it runs well now, I wasn't intending to do any major maintenance until about February, or wait until something comes up.

TIA
Randy
UTC

Veni, Vidi, Posti
Joined: UTC
Posts: 6847
Location: Tega Cay, SC
 
Veni, Vidi, Posti
Joined: UTC
Posts: 6847
Location: Tega Cay, SC
UTC quote
There is some rattly noise at slow speeds, but should go away quick as you accelerate.. If the rollers and belt have not been changed out in a while, say, 4-5k miles, you should remove the CVT cover and take a look at it. Unless you have records of work done, you may as well go thru the whole scoot anyway.
@old_as_dirt avatar
UTC

Veni, Vidi, Posti
2007 GTS
Joined: UTC
Posts: 22466
Location: Harriman, Tennessee, Tn
 
Veni, Vidi, Posti
@old_as_dirt avatar
2007 GTS
Joined: UTC
Posts: 22466
Location: Harriman, Tennessee, Tn
UTC quote
drag the rear brake lever ever so slightly as it will act like slipping the clutch
@jimc avatar
UTC

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 43669
Location: Pleasant Hill, CA
 
Moderaptor
@jimc avatar
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 43669
Location: Pleasant Hill, CA
UTC quote
^^^^

This! Keep a constant throttle, and use the rear brake to modulate speed.
OP
@randyjaco avatar
UTC

Member
2019 GTS 300
Joined: UTC
Posts: 23
Location: Friendswood, Texas USA
 
Member
@randyjaco avatar
2019 GTS 300
Joined: UTC
Posts: 23
Location: Friendswood, Texas USA
UTC quote
Thanks for the brake tip. It worked brilliantly!
@cogind avatar
UTC

Hooked
Vespa GTS 300
Joined: UTC
Posts: 137
Location: SoCal
 
Hooked
@cogind avatar
Vespa GTS 300
Joined: UTC
Posts: 137
Location: SoCal
UTC quote
There is a roller between the variator and clutch, sitting between the top and bottom of the belt.

I had that roller wear out, got the rattle when starting from certain stops, or making a slow tight turn. Easy fix.
@jakem avatar
UTC

Addicted
Vespa Sprint Sport S 125cc
Joined: UTC
Posts: 616
Location: Brighton, England
 
Addicted
@jakem avatar
Vespa Sprint Sport S 125cc
Joined: UTC
Posts: 616
Location: Brighton, England
UTC quote
I had this same issue coming from a Vespa elettrica to a 125cc Sprint. The elettrica was a brushless motor, so I could feather the throttle and easily travel at 2-3mph if I needed to.

The brake tip does help, but I've ended up leaving a little bit of gain build up and going start, stop when in heavy traffic.
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