During and after the Second World War SAT produced Hercules side valve petrol engines under licence. The initial model was called AMG of which military designation was SA-5; it was also produced by Tampereen Pellava- ja Rauta-teollisuus as Tampella 6000. It was followed by upgraded versions AMH, AMA and AMI. Other variants were marine models VMG and VMI Speedmarine and stationary engine PMG. PMG's were used on winches and compressors delivered to Soviet Union as war reparation. The last SAT-produced Hercules based engine unit was mounted on the first Sisu KB-45 military lorry prototype in 1964.