Modern Vespa

in the engine? or in the engine stand? or in the haystack of tools?

these all require different levels of curse words...

Enough threads? Hopefully so.

My guess is into the stand. If it's the tools, also no sweat. I don't see it somehow curving around and entering the transfer ports, so I'm going forward.

Recovered from inside the stand for peace of mind.

So it's one of those days…

The thick clutch spacer left the clutch too high and the cover standing proud. Thin it is. Had to take it apart and swap it.

The arm swings only a couple degrees before the plunger hits the pressure plate. I think it has to be correct.

I almost always skimp on this O-ring but I did it today.

Take it from me...don't start it until you've 100% located the missing washer pieces!

Located, see my magnet above!

86? Or 98?

Rest of carb jets
Idle 40
Choke 60
Stack 80ac / e1 / 98 or 86

It's a 2 port sprint motor with 20.17

I'd guess 98, but there are two ways to know for sure:
1) measure it with a bore micrometer
2) fuck around and find out

The choice is up to you.

stack sounds right for a 150 with a 20/17, most were 100 mains, so you're probably in the ball park.

20/15's on 125's got jets in the 80's but with a different stack

This seal isn't right but I'm not sure what I need. Corteco 30 47 6. Is too big for the sealing surface on the drive flange.

Cases are this type of seal though.

Older models had a 27/47/6 seal...

That sounds right for this motor!

Is s.3111 an ordinary split washer? What size?

M10
https://www.sip-scootershop.com/en/product/spring-washer-engine-stud-m10-mm-o-10-2mm-18-1-mm-th-2-2mm_16411000?q=s.3111

thanks Swiss! I'm in bitza engine hell over here cross referencing multiple parts books trying to make sense of things, and of course no one has all of the parts I need. I'm literally considering a unique order from scooters Originali for a kickstart bolt. In addition to the engine being an oddball Bajaj Sprint engine, it's now being converted to 8", so it's a weird hybrid.

It's a great idea to use the SIP site though for hunting down part numbers, since they at least cross reference all the original part numbers. Then I can have SM order it for me with the rest of my order.

Yep.. thats what I do. I search on SIP with original part number to grab the fastener size. If its something I can order from McMaster then I do.

OK so SM is the only place that seems to have these, but they don't now....

I have 3 of the bolts, I'm sure I can figure out another bolt, but can I use an ordinary lock washer with loctite as the 4th "tab thing"?

So in goes the next order for mercato. It got easier once I decided that anything they didn't have I'd do SIP order from them and I'll just wait until the whole deal shows. This project isn't a race, the frame is still in the rafters! Once the engine is done we will build a fork.

So I've been following the fork threads lately and looked back at my pics, is this an Allstate fork? I see no shock mounts.

Yep it is.

it gets NO UPGRADES!

well I will make sure it gets a proper spring. but in line with the use whatcha got goal of the VBB build, we will use it!

My friends bike, the 62, has the og fork. When I test ride it for him I didn't notice it was pogo stick style. It's also stock though so maybe the lower power played into that? I didn't think riding it was too bad honestly.

Why on earth someone decided "nah, we don't need a shock absorber, a spring is good enough"



Or am I just too European to understand

I can promise low power will be what we deliver. 2 port stock 150.

I haven't yet experienced it, so I can't say yet. But they had something similar with lambrettas, the 125/150's did not have dampers but the 200's did. My Lammy 150 with stock springs was fine - but then again it was my first scooter so maybe I didn't know better?

From experience with smallframe suspension in combination with the stock seat... I kinda love the super springy bounce to my smallframe! Its soothing to have a 10 second diminishing amplitude waveform bounce over every bump. Either puts you to sleep or makes you laugh. Maybe they were going for the same?

wait, the smallstate was spring only also? My smallframe had coil over dampener.

The reason is simple. Sears told them to make it as cheap as possible, so they did away with luxuries like shocks, speedo's, etc.

My smallstate has spring & damper too.

This VBB is going to be such a mash up, it will be fun.

-VBB not SEA frame
-SEA cowls, fender, headset
-Allstate fork
-Bajaj sprint engine with 23/65 primary for 8"
-saddle seat with white cover

When I sorted the parts, I kept at least 2 of everything I had doubles on, assuming I'd use the better one for the build. But now that I've decided not to paint, I'm keeping the better of each one as a solid spare, so long as each is usable. End result will be a mechanically new but very mixed heritage bike.

Should we call this a USA Bodge

I have been thinking on if I have to paint the cowls/fender/headset just to keep it from having eau de bodge. I'm undecided. I will grab tunnel photos just to have them in case anyone doubts the provenance. Allstate fork is almost a guaranteed "not a bodge" flag, as is the Bajaj engine instead of a P / LML. No 10's and no flash are in my favor.

So long as those in the know can call it a USA / farmer bodge I'm down.

it's totally a bitza!

the ghosts come knocking. ask not for whom the exhaust goes pop-pop-pop; for it goes pop-pop-pop for thee!

I'm not sure if bitza would be happy or sad to have his name associated with this God rest his merry soul, miss that dude.

so long as there's no "towel bars" I think you get the stamp of approval.

Very very true. What maniac would chose to put an Allstate fork on instead of a Vespa one!

Anyone confirm these as normal or not?

White and the blues are independent of the rest.

(Edit) blue to blue 1.4

No entries in the stator wiki yet for this common stator