Do you have new suppliers for parts - please let us know how you are coping with the Russian embargo ? If we pick a product for the future, we would like to be confident that the supplier is still going to be there ?
SPG gearboxes are in production for 20+ years, more than 3000 units are made. Most of them are used for aviation. There are 3 SPG gearboxes in production now, different ratios, different bellhousings for Subaru, Honda, Suzuki, BMW, Toyota engines, recommended up to 130, 180 and 350-400 HP. Many of them are flying in USA and Canada. More info Air Trikes: Engines and Conversion Kits.