Thom wrote:
I was looking through my manuals & remembered the ...I guess you would call them "transition"? P's from 81 to 83.
i.e.
P125"X",P150 "X"....PX150"E", PX200"E"....Before the switch over to the PX series.
I thought the "Arcobaleno" was actually a P150E?
Scooterhelp always had the P150 "S" listed....Any clue what that actually was?
a little clarity on what was what?
The P-series w/ the "X" at the end were the early 125 and 150 models. I wouldn't call them "transistion models", I'd call them "P's" or "early P's". These models lasted from 1977 to 1983. As far as I know, there is no such thing as a "P150E". "Arcobaleno" means "rainbow" in Italian. You can see the little rainbow in the model logo on my PX:

125s, 150s, and 200s were all part of the Arcobaleno overhaul, and so it is not limited ot a singel engine displacment.
Basically, the "Arcobaleno" P-series were the first of the "PX" scooters. That is when they moved the "X" over next to the "P", since the 125 and 150 models had electronic ignition now, instead of points/condensor. (which is what the "E" means: electronic ignition")
P = model range
X = has integrated turn signals, a first for Vespas
E = Electronic ignition (does not mean electric start)
Some models don't follow this, like the P200E, which had electronic ignition from the get go,(hence the "E") but does have turn signals. Also the "X" model, which is a very early P-series but has no turn signals. At least, that's my understanding from all of my research into this.