Sun Sep 18, 2022 9:08 pm

Lurker
VBC1T 1974 150 Super
Joined: 18 Sep 2022
Posts: 1
Location: SW Michigan, USA
 
Lurker
VBC1T 1974 150 Super
Joined: 18 Sep 2022
Posts: 1
Location: SW Michigan, USA
Sun Sep 18, 2022 9:08 pm linkquote
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

Mon Sep 19, 2022 5:19 am

Not So Moderator
VNB vsc o9c VMA vbc VSX
Joined: 28 May 2008
Posts: 6402
Location: Hustletown, TX
 
Not So Moderator
VNB vsc o9c VMA vbc VSX
Joined: 28 May 2008
Posts: 6402
Location: Hustletown, TX
Mon Sep 19, 2022 5:19 am linkquote
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.
Mon Sep 19, 2022 11:52 am

Molto Verboso
GL, PK, PE200 with hack, Sears Rust Badge
Joined: 24 Apr 2012
Posts: 1337
Location: Deep in the heart of Texas
 
Molto Verboso
GL, PK, PE200 with hack, Sears Rust Badge
Joined: 24 Apr 2012
Posts: 1337
Location: Deep in the heart of Texas
Mon Sep 19, 2022 11:52 am linkquote
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
Tue Sep 20, 2022 4:42 pm

Molto Verboso
Joined: 29 Nov 2020
Posts: 1033
Location: Los Angeles
 
Molto Verboso
Joined: 29 Nov 2020
Posts: 1033
Location: Los Angeles
Tue Sep 20, 2022 4:42 pm linkquote
rowdyc wrote:
Haven't heard good things about those adapters. Problem was they would not stay in place on the crank.
Guessing (based on no experience) that those fails are a result of not lapping the crank taper and/or not torquing to spec.
Tue Sep 20, 2022 7:21 pm

Molto Verboso
GL, PK, PE200 with hack, Sears Rust Badge
Joined: 24 Apr 2012
Posts: 1337
Location: Deep in the heart of Texas
 
Molto Verboso
GL, PK, PE200 with hack, Sears Rust Badge
Joined: 24 Apr 2012
Posts: 1337
Location: Deep in the heart of Texas
Tue Sep 20, 2022 7:21 pm linkquote
Ray8 wrote:
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.
Tue Sep 20, 2022 8:00 pm

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: 21 Oct 2005
Posts: 11800
Location: The state of insanity, SoCal
 
Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: 21 Oct 2005
Posts: 11800
Location: The state of insanity, SoCal
Tue Sep 20, 2022 8:00 pm linkquote
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.
Wed Sep 21, 2022 12:27 am

Hooked
125 GTR 1977, 50S 1975, GTS 125 Supertech 2021
Joined: 04 Aug 2014
Posts: 223
Location: Madeira Island
 
Hooked
125 GTR 1977, 50S 1975, GTS 125 Supertech 2021
Joined: 04 Aug 2014
Posts: 223
Location: Madeira Island
Wed Sep 21, 2022 12:27 am linkquote
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.
Wed Sep 21, 2022 12:47 am

Ossessionato
1979 P150X, 1983 P200E, 1988 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2
Joined: 02 Aug 2015
Posts: 3198
Location: Veria, Greece
 
Ossessionato
1979 P150X, 1983 P200E, 1988 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2
Joined: 02 Aug 2015
Posts: 3198
Location: Veria, Greece
Wed Sep 21, 2022 12:47 am linkquote
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…



Wed Sep 21, 2022 1:12 am

Hooked
125 GTR 1977, 50S 1975, GTS 125 Supertech 2021
Joined: 04 Aug 2014
Posts: 223
Location: Madeira Island
 
Hooked
125 GTR 1977, 50S 1975, GTS 125 Supertech 2021
Joined: 04 Aug 2014
Posts: 223
Location: Madeira Island
Wed Sep 21, 2022 1:12 am linkquote
Ouch... and those cruciforms are sooo expensive.

That for sure damaged the cog wheels which aren't cheap either...
Wed Sep 21, 2022 8:22 am

Hooked
Parmakit Primavera -74, Polini Primavera -68, Stock 150 Touring -59, VMC 177 Bajaj Chetak 125 -95
Joined: 22 Jun 2022
Posts: 388
Location: Finland
 
Hooked
Parmakit Primavera -74, Polini Primavera -68, Stock 150 Touring -59, VMC 177 Bajaj Chetak 125 -95
Joined: 22 Jun 2022
Posts: 388
Location: Finland
Wed Sep 21, 2022 8:22 am linkquote
Wonder if the gearcog-cruciform alignment was ok with that one.
Wed Sep 21, 2022 7:25 pm

Molto Verboso
GL, PK, PE200 with hack, Sears Rust Badge
Joined: 24 Apr 2012
Posts: 1337
Location: Deep in the heart of Texas
 
Molto Verboso
GL, PK, PE200 with hack, Sears Rust Badge
Joined: 24 Apr 2012
Posts: 1337
Location: Deep in the heart of Texas
Wed Sep 21, 2022 7:25 pm linkquote
FINYoshi wrote:
Wonder if the gearcog-cruciform alignment was ok with that one.

What u takin bout Willis?
Wed Sep 21, 2022 7:45 pm

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: 21 Oct 2005
Posts: 11800
Location: The state of insanity, SoCal
 
Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: 21 Oct 2005
Posts: 11800
Location: The state of insanity, SoCal
Wed Sep 21, 2022 7:45 pm linkquote
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
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