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2022 Honda PCX 150A, 2018 GTS300 [sold] & 2015 GTS300 Super [sold]
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UTC quote
Is there any benefit to using Malossi rollers over the Vespa OEM rollers in my GTS300? Are they more durable? Can I use the OEM guides with the Malossi rollers?
@waspmike avatar
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@waspmike avatar
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UTC quote
The only reason to use aftermarket weights would be so that you can fit lighter or heavier ones. Or they are cheaper.
Yes, aftermarket ones with the same dimensions will fit.

https://modernvespa.com/forum/wiki-standard-roller-weights
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A revered, and now passed, tech has a series of youtube videos "Vespa Tech Workshop". He seemed to think that OEM rollers were just fine and more durable. Now that was a few years back and his opinion....I have no wisdom one way or the other.
@wleuthold avatar
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2006 Vespa GT (Rocket): 2007 Vespa GT (Vanessa): 2009 Yamaha Zuma 125: 2018 Yamaha Xmax (Big Ugly), 2023 Vespa GTS300 (Ghost)
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2006 Vespa GT (Rocket): 2007 Vespa GT (Vanessa): 2009 Yamaha Zuma 125: 2018 Yamaha Xmax (Big Ugly), 2023 Vespa GTS300 (Ghost)
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UTC quote
I have used OEM, Malossi and Dr.Pulley rollers on my three Vespa GT scooters.

The stock rollers work fine and last well.

But I have used the other two because they are available in different weights.

Stock is 10.7g for a GT.

I tried 12g to see if it would provide extra top speed.

All it did was slow down acceleration.

I went as low as 9g but that revved too high while accelerating, so I settled on 10g.

I ordered three new sets of 10g Malossi recently. They are in transit.

They are all fine to use.

Bill
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@waspmike avatar
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UTC quote
WLeuthold wrote:
I went as low as 9g but that revved too high while accelerating,
Measured or perception/preference?

What is your cruising RPM? Just asking as it could be more than your 9g acceleration RPM. So not mechanically too high.
@wleuthold avatar
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Veni, Vidi, Posti
2006 Vespa GT (Rocket): 2007 Vespa GT (Vanessa): 2009 Yamaha Zuma 125: 2018 Yamaha Xmax (Big Ugly), 2023 Vespa GTS300 (Ghost)
Joined: UTC
Posts: 5228
Location: Jacksonville, Florida
 
Veni, Vidi, Posti
@wleuthold avatar
2006 Vespa GT (Rocket): 2007 Vespa GT (Vanessa): 2009 Yamaha Zuma 125: 2018 Yamaha Xmax (Big Ugly), 2023 Vespa GTS300 (Ghost)
Joined: UTC
Posts: 5228
Location: Jacksonville, Florida
UTC quote
waspmike wrote:
Measured or perception/preference?

What is your cruising RPM? Just asking as it could be more than your 9g acceleration RPM. So not mechanically too high.
Nothing measured and no tachometer.

But I have three GTs, so I can compare, but not at the same time.

So perception.

This feel led me to go with the 10g rollers.

Never sliders as I have broken two variators, both times, the only times I ran sliders.

Bill
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