D-1 60 hp (45 kW) LeBlond 5D (23 built) D-1-166 85 hp (63 kW) LeBlond 5DF (4 built) D-1-K 100 hp (75 kW) Kinner K-5 (10-15 built) D-1-L prototype of the D-1-166 with 90 hp (67 kW) Lambert R-266 (1 built - also known as D-1-85)