Piaggio sfera / zip 1 runs better cold

[sc00ter]

Just out of curiosity, how many miles (or kilometers) are on this scooter? I assume you picked it up used and are just trying to get the most out of it, and there is nothing wrong with that. Its rare that anything wears out on a normal owned 50cc but some people (me!) pound the miles on, and tend to abuse them also. Burnouts are the worst thing for a CVT driven scooter! So if the prior owner was hard on it and/or the miles are kinda high you might need to do a transmission overhaul. Measure the belt width against the service manual spec. All that being said try a stiffer torque spring. Malossi white is a good start. Malossi may say white is soft but its stiffer than a stock spring.

[padly1995]

Originally Posted by sc00ter

Just out of curiosity, how many miles (or kilometers) are on this scooter? I assume you picked it up used and are just trying to get the most out of it, and there is nothing wrong with that. Its rare that anything wears out on a normal owned 50cc but some people (me!) pound the miles on, and tend to abuse them also. Burnouts are the worst thing for a CVT driven scooter! So if the prior owner was hard on it and/or the miles are kinda high you might need to do a transmission overhaul. Measure the belt width against the service manual spec. All that being said try a stiffer torque spring. Malossi white is a good start. Malossi may say white is soft but its stiffer than a stock spring.

Hello,
yes, this scooter is from 1992 so it has long history. Belt was worn for 3mm, so I repleaced it with new one.
I got this scooter for two crates of beer from a local hehe.
It camed with new tyres, new piston and dellorto phbg 19mm carb and the clutch also looks like new.
It`s and old ugly (at least to me, but I have seen worse) scooter, but I like it because of it`s quality and it`s Piaggio engine.
It has 11k kilometers.

Im planing to register it and install 70cc bbk, but I wont do any of this until I get it running good.

[sc00ter]

2 stroke tuning can be both fun and frustrating! Now, did it run normal at one point, or did it come to you with running issues? I do agree that it needs to be ironed out before going any further, as a bbk kit has is own joys for tuning correctly. Dont get discouraged as the rewards are worth the time and effort involved. Im currently overhauling a 98 pre-bug Zuma (aka BW's) and Im not really sure what route I want to go. But it needs to get running safe and reliable before anything is decided. Curious again, are you in the states or overseas? 2 stroke Piaggio's are rare in the US but you can still find tons of tuning stuff for them.

[padly1995]

Originally Posted by sc00ter

2 stroke tuning can be both fun and frustrating! Now, did it run normal at one point, or did it come to you with running issues? I do agree that it needs to be ironed out before going any further, as a bbk kit has is own joys for tuning correctly. Dont get discouraged as the rewards are worth the time and effort involved. Im currently overhauling a 98 pre-bug Zuma (aka BW's) and Im not really sure what route I want to go. But it needs to get running safe and reliable before anything is decided. Curious again, are you in the states or overseas? 2 stroke Piaggio's are rare in the US but you can still find tons of tuning stuff for them.

It came with running issues, owner said that it was because of too big carb.
It was bogging realy bad and belt was worn so it was overreving and doing top 40kmh afte tuning the carb.
After chaning the belt it started to act much different, I had to change 5,2g roller weights to 3,25g because it was driving way under it`s powerband.
I`m from Europe, Slovenia, just next to Italy so we have alot of Piaggios on our roads.