Modern Vespa

I am a relatively new Vespa owner. I recently purchased this VBC1T 150 Super in good but non running shape. When I got it the stator and flywheel were removed and thrown in a box of odds and ends. I was also sold a Vespatronic electronic ignition (p/n 50005000) with the scooter.
My issue currently while trying to put it together, if my understanding is correct, is that the scooter has a small taper crankshaft and the vespatronic flywheel is sized for a larger taper (possibly PX style?).

Does anyone know if there is a correct vespatronic flywheel that actually fits the small crankshaft taper?

Would it be easier to just use one of these?
https://www.sip-scootershop.com/en/product/adaptor-crimaz-conversion-kit-cone-flywheel_51006100?q=flywheel%20cone%20conversion
https://www.sip-scootershop.com/en/product/adaptor-crimaz-conversion-kit-cone-flywheel_51006000?q=flywheel%20cone%20conversion


Basket Case

What a great looking original paint Super. Nice!

I believe, you would use the cone in the top link. Not the one for small frames below it.

That said, I have never run one of those. Curious to hear from someone who has.

Haven't heard good things about those adapters. Problem was they would not stay in place on the crank. May or may not work for you.
Just get the vespatronics flywheel from sip to be safe which is about a little over $100 more then the adapter.
https://www.sip-scootershop.com/en/product/flywheel-vespatronic_50006220?cr=e993ab67-6807-4109-bbed-f6374ebf9f9b&gclid=CjwKCAjwpqCZBhAbEiwAa7pXeR53PynVs8xH2bQ4-4mHTOI4xrBlCikis0KWvb34vimim-J45hKvORoCfbIQAvD_BwE

Guessing (based on no experience) that those fails are a result of not lapping the crank taper and/or not torquing to spec.

Never dealt with the adapter but from what I read and heard the larger woodruff key was the issue with the adapter staying in place.
I must admit sounds like a good idea. Get a Ducati igntion kit with this adapter and throw it on a vbb or sprint and you have 12v's all around...on the cheap. I would imagine if it worked so well more would use that adapter.

you know what, I'll take a flyer on this. I have the P series stuff sitting here so it's no biggie on parts and the investment isn't much at all to play around. worst case, I have the stock stuff to fall back on.

it'll be going on a stock 2-port so it's not some crazy hot rod build.

I think Crimaz builds some good stuff but I wouldn't trust those adapters.

Once I got a Vespatronic from Scooter Center on their ebay store, kept it a couple of years to fit on my 125 GTR, only then findind the flywheel cone was too small (17mm) to fit the GTR 19mm? crankshaft. I wasn't yet a SC customer but registered, wrote them the case and they exchanged it at no cost for the correct version - Kudos for SC

Some (latest) GTR's already had the thicker PX style crank.

For your reference it was the article VTR1005 so I think this is the correct one for you, if still available... but there are alternatives ans mentioned above.

I agree…

This cruciform was on a mildly tuned Malossi doing 22BHP at the wheel (not mine)…

I have read the same thing on those adapters, spinning and f@cking up everything…

Ouch... and those cruciforms are sooo expensive.

That for sure damaged the cog wheels which aren't cheap either...

Wonder if the gearcog-cruciform alignment was ok with that one.

What u takin bout Willis?

in defense, that cross looks super waxed ass on the wear lands and my assumption is that anything with that much abuse would've broken regardless of the mfg'r