Modern Vespa

On Sunday I did a 220 mile loop out of Ashland Oregon and went up to 7100ft elevation at Crater Lake. As I started to climb right out of Ashland the bike was running worse and worse. Made several stops to rejet

started with an SIP stack, switched to Dellorto, and then back to SIP

Main	Mixer	Air Corrector	Idle	Notes
118	BE3	160	100/50?	stock was perfect with stock pipe
125	BE3	160	100/50?	SIP Jet stack bogs out and dies with SIP Road2
122	BE3	160	100/50?	works well enough in SF
122	BE3	160	100/50?	worked well enough in Ashland
120	BE3	160	100/50?	Dellorto jet stack, richer than 122
118	BE3	160	100/50?	Dellorto jet stack, richer than 122
118	BE3	160	100/50?	SIP jet stack, Now it runs again, makes it to the top of Crater lake but boggy
115	BE3	160	100/50?	Runs well enough at 7100ft

Opted to leave the 115 main in as we headed down the mountain and the performance just got better and better (as expected) but the temps also stayed in control. Win! Did the next day with the 115 in place and it was good the whole day and went like a rocket.

Why not just get another stock pipe? Do they not make them?

from what I'm told the stock pipes from Piaggio are now crap and don't even fit right, that was my initial choice. the SIP pipe does fit perfect, I'll give them that.

working on a mount that can hold two 1 gal RotoPac fuel cans in the step through. I often strap a 2gal can here for longer rides but it's always a bit of a mess and slides around a bit.

Looks nice Patrick, would be very quick to mount the can.

Most of the time I carry a fuel container, I find that the rectangular-section rubber bungee straps are great because they grip the surface of the plastic as well as hold it down. Doesn't slip like a fabric strap. And no need to use the bag hook either, just floor hooks like you have.

Traced the sticking throttle to the oil pump, will have to wait till I get my garage back to dig into that.

Also tracked down my lack of lights to the battery. This LiFePo battery has been fantastic until it wasn't. Have a lead acid battery on order to replace it.

well... there's your issue right there, it wasn't a carb problem at all! it was electrical the whole time, and it looks like you fixed it the right way (with a hammer).

hit me if you need any oiler/box parts I have a little stash of bits for the older style.

thanks, when I get it apart and figure out why it's hanging up I'll hit you up for parts.

90% of all carb problems are electrical…

Got the new battery and it's a perfect fit into the B49 battery box