Modern Vespa

Here is the video of acceleration. It was slightly better yesterday but I was playing with needle position and it is a little rich.

Just changed weights again to 7.5 nothing changed. same slow top speed

Update on 7,5g rollers.
Seems like it's smoother with these going up and down the gearing,. Also more steady. I use to drop speed going up hill on the 6.5g rollers.
I think I might have cracked the rollers. But still at 45mph / 72k/mh.

Is it possible my air intake is restricted. It has a similar channel like the stock exhaust have. Take a look at the attatched pic. I'm thinking I have to be restricted somewhere.

Did you do this? What was the outcome?

fabio
Yes I did all of the sharpie was rubbed off. I even put it on both sides of variator.

did you get to the bottom of this? mine has pretty much the same mods as yours and mine only does 52mph on the clock,which from what iv'e seen on here will be around 45mph,im going to re jet it tomorrow and put my foam filter back on and see how it goes,iv'e only just run it in and opened it up today which was disappointing felt quicker than 45mph tho lol

I haven't looked at this thread that I started back quite sometime ago.... it's since had almost 95000 views....... I'm flabbergasted !

Hello Fabio!
Reading this post inspired my ET2 build..

I had been searching for an ET2 for years, and recently picked one up cheap that had a failed crank bearing and wasn't running

2005 ET2 in Perla white
DR70cc evo kit
New bearings and seals
Stock Crank
Polini Hi-Speed variator kit w/polini belt and blue contra spring.
Malossi Fly clutch
BGM phvb 17.5mm carb - vacuum & oil lines plugged
2t oil tank disconnected
Malossi racing fuel tap
recovered the seat, some black paint on trim
Running 32:1 for the first 100 miles - premixing @ the pump / then 40:1

I got it up to 45 (indicated) on a slight downhill and let off, speed limit is 25 most everywhere in NYC, but it feels like it might do more..

Feel like its quicker than my old stock p125x

After all of this I wish I had replaced the stock crank, went Malossi 70 kit, ported to match, preformance cdi, but I also want reliability, and a quick machine in between lights, don't really need top-speed.

cheers

that dr 70 kit sounds fabuluos.....what airfilter are you running?

i got a stage6 pro sport mk2 ...these call for a full circle crank and i snagged one of polini's

im going to try and install over the winter...i believe with the right pipe these kits can produce 14ish HP....stock et2 is 5..that dr kit is probably 8ish

Are you still running the stock pipe? Considering everything else you've done there are massive gains to be had with a performance pipe.

I neglected to add:

Also, have a Malossi Wild Lion pipe, and the Malossi red air filter that fits in the stock airbox.

The Malossi Wild Lion, seems a little tame. Maybe I should look for an expansion pipe, and sell the lion

Not sure if you have already, but it would benefit from a free flowing performance exhaust.

SUBSCRIBED to this thread! I need to know all this for my new to me ET2 which hits 35 mph on the flats. Now I'm wondering if it has the a restrictor on the variator shown on the first page of this thread. I need to poke around

I'm now in on this thread, too. Am considering a 70cc kit for my ET2...got lots to go back through here and read!

You should see an indicated 40mph on the flat. All the U.K. 50's are sold restricted, I understand in the U.S. yours tend not to be.
It could be your belt and rollers are worn as this would have the same effect. Probably a good idea to change these anyway if they haven't been done for a while.