This is a project I have been considering for a while and it is great to finally start a project for myself instead of buying fixer uppers to sell off once running. My wife would love a scooter for herself but she's just not interested in shifting all the time and kickstarting a bike multiple times when it is cold. Personally the geared part is what makes scooters so much fun for me, but each to their own.
The problem is she really likes the old style scooters and wouldn't really want a new style auto. So I started thinking and found that Vespa made a PK style automatic with a 125cc engine. Would it work to retrofit one in to an older frame?..Let's find out.
Here's a picture of a 1974 Vespa 90 project I picked up which will be the donor frame for the project. I wanted a frame with the USA style doors on both sides because I will be fitting a battery. The bike was methodically disassembled, bagged, and labeled by the 2nd owner in the late 80s and sat in the garage in pieces. It came with a lot of brand new parts for the proposed rebuild so I used the parts, built up the motor and sold it off on the BBS to finance the new motor. Other parts that I didn't need were also sold off (indicators, wiring loom, regulator, etc..).
The PK 125 Automatica was only produced for Europe so it is a little hard to find here in the USA. It is an ideal donor as it has all the features of a current automatic such an oil injection option, reed valve intake, electric start option, and at 125cc it should be able to keep up with traffic. I'm pretty sure it is a 12V system too. I don't yet know if standard small frame kits will fit this bike - we'll see.
My idea for the project is as follows:
I hope to move quickly on the project, and I will update the pages as it progresses.