Yet another "side" project, LOL

I don't remember when I bought this, I had full intentions of getting it going and riding it. Probably LOL was about when I picked up the Dart, so it "took over." The thing got buried in the shed, and pretty soon, LOL, I could not even see it. I'm sure I forgot it was there at times

But for some reason the neighbors got me excited the other night. I have intentions of sticking with it and getting it going and licensed. Here in Idaho, you have to take the motorcycle endorsement.......even for this. The little "non shifting" "less than 50" cc mopeds are exempt, and in fact, you don't even need plates on them.

These, unlike the 50/55 I had for one summer back in '67, have a high/ low range gearbox, so you don't need the add-on "trail" sprocket

When I was a kid we had a 55 and a 90 both, and as you said, the 90 had the Hi Lo range shift on the side of the trans case.
The 55 had the sprocket over sprocket design, where you take four bolts with nuts and washers out of the teeth and the short section of chain out to fit the smaller sprocket.

The things run forever, and they are very popular with older RV owners for putt'in around or to the local store.