Haven't we had this conversation before? maybe not I get lost sometimes
Ok where would you like to start?? Micro to Maxi.. Well for me Maxi is 5 D12's
I think I have a static photo of another member of our clubs K powered Crayon...It was a beast until a Cato ended its existance If I can find it I'll post it after scanning. Chris Kidwell is (was) the builder owner, It's size was interesting.
But I'll start at the other end .. my 8pk of full size 1:1 scale Micro-maxx powered crayons and storage box
2.6" was the next available size at the time in my current fleet. Like Richard I have a few other size Crayon candy packages, pencil sharpeners, and a smaller size crayon bank waiting for a lull in other project