The Rankin RBM-4 of 1928 was a two-place low wing monoplane powered by a 60hp LeBlond 5D engine. Fist flown by Basil B Smith, they were priced at $2,500.
One appears in a 1936 register as four-place cabin with a 200hp Wright NC9622 (how the NC was acquired is unknown)] c/n 3, owned by brothers Alexander, Arch, and Charles Rankin of Wayne MI. Company promotion also told of a three-place open cockpit with 90hp LeBlond 7D also in progress, with a useful load circa 500 lb and max speed of 110mph, as well as an ambitious plan for a network of national distributors.
Engine: 60hp LeBlond 5D
Wingspan: 37’1″
Length: 25’6″
Useful load: c.350 lb
Speed: 100 mph
Seats: 2
All Aero 