Searched my stash, and found a drilled chain guard ,similar chainring and a 2.25 on a black rim. I measured the bars on the blue one, (they are about 13" high by 29", so perhaps 15"s to be similar yet comfier!
My other build is almost finished, and as an old video with my daughter and I riding my two swing bikes( Reflections of a faded swinger build) before I punted one just came up in my FB memories..