Most peculiar it was a 53. Eyers Rock isn't the coldest place nor is Melbourne so it must run even hotter than a 57 in here Sweden and mine smelled of plastic before i refitted it and got 60km/h (variator and 57-64 or 66 they weren't sure)
Im in australia. Its a 17.5mm dellorto carb. i had read they had a 57 too but when i took the carb apart the main jet had 53 written on it. Maybe they derestrict the exhaust more severely here by having a larger resonator pipe or something
Maybe my dealer's full of shit. I prefer not getting my hands dirty on my "daily driver".. Doing that usually gets me into trouble and i end up with boxes of stuff that would be cool if it worked - instead of a daily driver.
Hence i pay for these retards to do it. They however insisted the service manual stated 57 for Sweden and recommendation for de-restricing was 64 or 66. But the guy wasn't sure what was fitted onto mine.
When I got the bike back it took me an hour to realize there was gasoline sprayed out from the exhaust. To tired to do the imperial math but it was between 1.2 and 1.4L/ 10km
That's more than a Volvo SUV and more than a Porsche 911.
They wouldn't help me out and I just got too tired to even think about it.
Spoke to a 15year old guy on a Swedish forum and he told me to check out how much I could do with the screw that sets the mixture.
I turned it not 0.5, not 1 but SEVEN revolutions counter clockwise.
Ended up doing around 0.4/10km and runs like a charm at 60km/h (on the speedometer that is)
From the photo I posted here of the genital looking pipe - I've been told by a couple of hot rod 15yr olds (who are the big clientel in Sweden and the ones who do the most de-restrictions and both these guys ride Gileras at 120km/h) that it generates as much air resistance as a plug does.
I've got a friend who's great with a blowtorch and has done exhausts in the past. Been looking to borrow a blowtorch now for two weeks.
I'd go easy on the jet not awoiding the same mistake the "wiz" at the shop did with mine with gasoline spraying from the exhaust and i don't think my compensation is a good one in the long run.
Haven't checked the sparkplug but it runs well so..
I had a piece of licorice before de restricting it and with the big jet i had a an even more licorice like sparkplug.
These engines are built built to last. Not much compression and a lot of tolerance. Piaggios old agenda from the 50s is still going on today.
The servicemanual states around 10:1 compression rate and compression is not the first thing to focus on.
Buy a pretty plain malossi 50cc cylinder and i'd bet you get twice the power.
I'm a bit concered with the legal matters regarding 50/70cc.
There is no Vespa 70S. In Sweden it would be a higher penalty than riding a Suzuki Hayabusa without a licence.
You buy a Vespa cause it's good looking, discreat.
You buy a Gilera or an Aprilia if you want to look like a Ninja turtle who's lost his shell and grown some more fingers.
It's a shame there's not nearly as many options for Vespa owners.
I usually look at http://www.sip-scootershop.com/ for parts.
There's an english company that builds and sells exhausts for LX scooters. Can't remember the name of the company at this time but i'll post it at request.
These are made for racing and that means racing with capital letters.
They look good but they probably sound like a ninja turtle looking for trouble with the law - and the fuel return and catalys is of course not something in use. It's just raw power matched for a cylinder.
But if you wanna go cowboy all the way that's the way to go.