Indeed, their "motors page 2"
(more direct URL:
formatting link
)
shows what they descrbe as a "classic cub scout motor" and it is functionally very similar to what I built. It uses nails for the frame instead of a tin can but otherwise seems extremely similar. (I certainly remember lotsa scotch tape being part of the commutator...)
Thanks! I'm sure my kids and I can get one together soon!
Tim.