>>Ree: Are there any Tomos repair manuals detailing what you need to do to fix/tune a 70cc upgrade?<<
Not that I know of, and a walkthrough on it is kinda hard to do, but someone fairly good with some experience can figure it out - it's amateurs that have difficulty.
My advice...IF you get the kit, is to see if the shop who is selling you the moped will install it for you, and warrant THAT work, since it voids the manufacturers warranty - if they'll put on the upgrade and warranty that work themselves - you should be ok.
If they don't wanna do that, get a 27 tooth front sprocket, kickstand/sidestand kit, Bi Turbo exhaust, and a slightly larger carb (15mm should do) - and it's the next best thing.
>>Wait until Ree explains the *confusing engine designations of the Tomos moped.<<
"A35" is is misnomer...there is no "A35" (tho there might be when I fix my transmission...depending)
As it were, Tomos had/has two engine designs.
A3 = hexagonal cylinder, slightly longer transmission, shorter stroke.
A5 = square cylinder, shorter transmission, longer stroke.
The "A35" comes from Tomos's original idea to mate the old cyl or trans to an upgrade A5 component, and although they printed the stickers, manuals..etc...they never actually BUILT any - going on to the A5 system entire in production.
So it's either A3 or A5.
Sprint, Targa, Colibri = A5 Engine
Bullet, Golden Bullet = A3 Engine
Simple...one would hope.
I might hand build an "A35" myself, but there's more to just putting the cylinder on, you have to change out the whole pistonarm assembly, and you do not wanna do that unless yer real good at this.
>>Ree: Have you ever had any trouble with an upgrade getting noticed by the cops?<<
Yes, never ticketed, however..just bawled out, those cops knew* no moped should be pushin 50mph, no matter what I said, but they'd play hell proving it without impounding my moped, and the wrecker guy would have laughed them off if they asked him to tow a moped...so they let it go.
Remember, I can change out the whole kit in half an hour, heh.
Not only for the speed kit, they once tried to safety-flag the "frankenbike", and I lucked out on that for the same reason...having no muffler, lights run offa RC car battery, visible cylinder venting, and only one brake....I guess they had a point...good thing the rear wheel didn't come off again while they were in view of it.