MOPED ARMY

at least, maybe 275 if you duck minimalizing your resistance.

35-37mph.

Assuming you started with a 30mph Ciao in good condition.

also pick up one of the hi-flow air filters.

pipe, carb, filter. the trifecta of non-kitted fast.

David's right about the name.

The variator would definitely give you better acceleration, but it might give you more top end too....never compared the pulley sizes on a stock ciao to those on a variated bike. I'm sure someone has.

lol okay. So with those 3 things above It still wont hit 40?

should i go variated? or just stick with non variated.

you need new cases for sure man that 13mm carb is weak go all the way with either a malossi mhr engine or simonini engine if you want to go stupid fast get a sprocatti motor

werd^ hopefully hit 40... and good uphills

Should I put one of those simo's on my ciao porter?

Got a guy here in Ptown pulled 47 easy on his non variated Ciao last night. He sucks off the line though.

Yeah if you've got hills to deal wth I would variate for sure.

pipe and carb is where to start. the 13 Sha comes with a 66 jet, works for me at sea level with a Polini pipe (its a bit rich though). Most people go down from there on a stock cylinder. 64ish? stock jet is like a 48 or 50.

the 13mm isn't weak at all. its just that the vespa intake diameter is 10 mm. that is what restricts it. if you drill it out to 13mm that carburator will be just fine. personally, on a 50cc or even 65 cc engine, the reed valve intake systems for vespas that use the 21mm carb is overkill. your engine doesn't need that much fuel/air. really i only think you should use the reed valve kits if you go with 70cc or over. and even still it is not nessecary

dcc, not to sound like an ass, but you should stop posting and lurk more. 50GP bikes routinely use carbs over 25mm, even up into the 30's. Even drilled out, the 13mm intake on the vespa is the main thing holding these engines back. Mine runs pretty quick on a 13mm, but it would be a lot faster with a 17 or 21. Do you even know what reed valves do?

Anyway, on topic: carb and pipe first, then variate later if you want. Simonini circuit when benji gets them back in stock

Good on the reed valves, you nailed it. Yes, the GP bieks are turning much higher RPMs, and are ported more aggressively, but point being a 19 or 21 on a kitted 50 or 65 is fine if you're tuned right. With a cut crank and a good exhaust they will really benefit from the extra mix a large carb would let in.