Here is a story someone did on my conversion. https://www.electricbike.com/converting-a-vintage-vespa-to-electric/Care to share any more detailed info on the build jim, why you chose the components you did etc. Any technical aspects others might find helpful in any builds they might be contemplating.
I built this last year from a Vespa P125X that was in rough condition. Converted to 72V 4KW hub motor with a 38 amp hour battery. It would do 62MPH with my near 300 pound self on it, and was almost scarey off the line. Continued:advbikes.com