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B&C Experimental Standby Alternators

The B&C experimental standby alternator is a high-performance, spline-driven alternator that mounts on a standard vacuum pump accessory pad. It may be used either as a primary or standby alternator for a rated output of 20 amps @3500 alternator RPM. Constructed of all new materials, it is designed for durable service, with heavy-duty sealed ball-bearings, two cooling fans, a dynamically balanced rotor, and a special “shear section” designed into the drive coupling. Measuring 4.6″ wide and 6″ deep and weighing only 5.75 lbs, the BC410-H will clear the tachometer cable and oil filter on stock Lycoming engines. The BC425-H will NOT clear the tachometer cable and oil filter on stock Lycoming engines. it is designed mainly for Continental and Rotax engines.

Part
Number
Description Engine
Eligibility
Volts/
Amps
BC410-H High-performance spline-driven alternator Experimental aircraft 14/28V, 20-30A
BC425-H High-performance spline-driven, short alternator Experimental aircraft 14/28V, 20-30A