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UTC

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2015 Sprint 150, 2018 GTS 300
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UTC quote
Got this kit from Scooterwest with the Malossi 12.5 gram roller kit.
Replacement belt is ribbed on the outside, old one was smooth.

Bike feels peppy and bit faster on takeoffs.
Also sounds a bit louder exhaust wise.

Primavera now feels and sounds like the 2015 Sprint 150 we just picked up, (both scooters low miles 1500 & 1200 miles) not sure if Sprint came with lighter rollers stock but that bike was the better runner before belt and roller upgrade on the Primavera.

Also new belt and transmission service got rid of most of an annoying clutch bell noise upon take offs that I was struggling to eliminate on the Primavera which might be partly due to, a lot of 2 up riding with lots of hills, (some really steep) and a new rider cutting her teeth on this Primavera.

Got an intermittent faint ticking noise at higher speeds on the Primavera mostly on letting off of gas that I didn't notice before, not excessive but hard to pinpoint with a helmet on.
I'll work on getting valves adjusted on the Primavera next and pop off the belt cover in a few days to have a look.
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UTC

Enthusiast
Gts hpe supertech
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Posts: 90
Location: Minneapolis
 
Enthusiast
Gts hpe supertech
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Location: Minneapolis
UTC quote
I haven't ridden my girlfriends primavera enough to notice if it happens on it, but I get that ticking noise when letting off the throttle at higher speeds on my gts hpe.
@steelbytes avatar
UTC

Veni, Vidi, Posti
2019 GTS300 Supertech E3 57,000km
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Location: Batmania aka Melbourne, Australia
 
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@steelbytes avatar
2019 GTS300 Supertech E3 57,000km
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Location: Batmania aka Melbourne, Australia
UTC quote
hmm interesting

One of the parts manuals for a primavera 150 iGet shows two alternatives, yet sites like sip list the smooth for the primavera and the ridged for a gts125

smooth B016183 https://www.sip-scootershop.com/en/product/belt-piaggio_PI487170
ridged 1A011455 https://www.sip-scootershop.com/en/product/belt-piaggio-standard_PI002004
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@greasy125 avatar
UTC

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
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@greasy125 avatar
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UTC quote
they're the same belt, it's just dependent on market.

I *think* the ET4/LX150 belt is the same, or that you can at least use it in a pinch.
OP
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UTC

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UTC quote
greasy125 wrote:
they're the same belt, it's just dependent on market.

I *think* the ET4/LX150 belt is the same, or that you can at least use it in a pinch.
Thanks, seems like the double ribbed belt would be more flexible and less likely to crack.

Really happy with the rollers and belt swap, not just a phycological upgrade, noticeably faster on the usual loops
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UTC quote
steelbytes wrote:
hmm interesting

One of the parts manuals for a primavera 150 iGet shows two alternatives, yet sites like sip list the smooth for the primavera and the ridged for a gts125

smooth B016183 https://www.sip-scootershop.com/en/product/belt-piaggio_PI487170
ridged 1A011455 https://www.sip-scootershop.com/en/product/belt-piaggio-standard_PI002004
Thanks for the input.


The good thing about Vespa Motorsports/Scooterwest for me, is they are working on California bikes same as mine, I guess I shouldn't have worried it's running good. I am going to order the same kit for my 2015 Sprint 150
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@znomit avatar
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LX190 Friday afternoon special, Primavera, some pushbikes
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@znomit avatar
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UTC quote
I put a ribbed belt on the LX and she did not get any extra pleasure. A highway trip with the throttle pinned most of the way saw me unexpectedly run out of gas (within pushing distance of the gas station). Had some rubbing on the cases when I opened it up to swap the old belt back in.
@waspmike avatar
UTC

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LXV 150 3v ie. Midnight Blue (Sold) Now Honda Zoomer X
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UTC quote
Something in the deep recesses of my cranium says that the GT200 had a double-sided belt.
@greasy125 avatar
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Weird 80's Vespas & Cool Vintage Lambrettas
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UTC quote
waspmike wrote:
Something in the deep recesses of my cranium says that the GT200 had a double-sided belt.
you are correct, it did have a ribbed belt.
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UTC quote
znomit wrote:
I put a ribbed belt on the LX and she did not get any extra pleasure. A highway trip with the throttle pinned most of the way saw me unexpectedly run out of gas (within pushing distance of the gas station). Had some rubbing on the cases when I opened it up to swap the old belt back in.
Not sure if the fresher belt helped over the old original belt but the 12.5 gram rollers that comes with the kit likely did,
bike gets up to speed a bit quicker and went up the two steepest hills we often ride (with same load/passenger) a few mph faster on the odometer.
Top speed hasn't changed though.
@waspmike avatar
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LXV 150 3v ie. Midnight Blue (Sold) Now Honda Zoomer X
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UTC quote
znomit wrote:
I put a ribbed belt on the LX and she did not get any extra pleasure.
To get the extra pleasure you have to turn the belt inside-out. It is about you not her.
@znomit avatar
UTC

Veni, Vidi, Posti
LX190 Friday afternoon special, Primavera, some pushbikes
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UTC quote
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@motovista avatar
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GT 2.4
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GT 2.4
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UTC quote
Honda did the same thing with the new PCX 150. I'm not sure why.
Malossi stuck with the single sided belt for the Primavera/Sprint 150 because of the rubbing issue on the double sided belt if you modify the transmission by changing the variator or rollers.
As was demonstrated by Senor Znomit, if you put in lighter rollers and run it fast, the double sided belt is likely to rub the case. With the stock rollers it's not able to push the belt all the way to the top for extended periods of time. And you can go right back to the 841213 belt or the Malossi belt when your oil pan starts to leak.
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UTC quote
znomit wrote:
This was very helpful, thanks,
got it apart again today, minimal rub but put the low mile, 4 year old belt back in and left the 12.5gram rollers
Will use this new double ribbed belt on my 2015 Sprint with stock rollers.
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2015 Sprint 150, 2018 GTS 300
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Posts: 894
Location: SoCal
UTC quote
Motovista wrote:
Honda did the same thing with the new PCX 150. I'm not sure why.
Malossi stuck with the single sided belt for the Primavera/Sprint 150 because of the rubbing issue on the double sided belt if you modify the transmission by changing the variator or rollers.
As was demonstrated by Senor Znomit, if you put in lighter rollers and run it fast, the double sided belt is likely to rub the case. With the stock rollers it's not able to push the belt all the way to the top for extended periods of time. And you can go right back to the 841213 belt or the Malossi belt when your oil pan starts to leak.
Thanks man, always selling the hard truth 👍🏽👍🏽
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