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IMPROVEMENTS TO THE RETROL HM-01
The little Chinese Retrol HM-01 runs quite well out of the box, but a few simple modifications can slow it down to a more restrained pace.
The RETROL Gasoline Engine: Hot-bulb Power Revived
Today, we’re introducing the RETROL Vintage Gasoline Internal Combustion Engine, a unique model inspired by the classic stationary engines of Europe. Specifically, this engine draws its design from the Hot-bulb Engine, a type of internal combustion engine that gained popularity during the early 20th century due to its versatility and durability.
