Back on the 'non-fighter biplane', what about the Fi 167 dive/torpedo bomber?
Was designed with the same principles of the Storch (apparently could fly even slower), with another wing and a DB601 engine.
The project was killed when they stopped the Graf Zeppelin
Length: 11,40 m
Span: 13,50 m
Height: 4,80 m
Empty weight: 2800 kg
Max weight: 4850 kg
Crew: 2
Weapons
MG 17 (7,92 mm): 1 (forward fuselage)
MG 15 (7,92 mm): 2 (rear cockpit)
Disposable payload: 1 SD-1000 bomb (1000 kg) or 1 SC-500 (500 kg) bomb or
1 SC-250 bomb (250 kg) and 4 SC-50 (50) kg bombs or
1 LT F5b torpedo (765 kg)
Engines
Engines: 1
Type: Daimler Benz DB 601B inverted V-piston engine
Engine performance: 1100 hp (820 kw)
Performance
Max. Speed: 325 kph
Max. Range: 1500 km (932 miles)
Max. Altitude: 8200 m (26905 ft)