Similar to the Retrol V-twin motorcycle engine is the H08 Hoglet Engine kit, which sells for $649.99. This kit is also a four-stroke V-twin engine modeled after Harley-Davidson motors from about 100 years ago. This motor has similar dimensions to the previous kit but starts using a kick-start lever instead of a drill or pull-start cord. It is made of aluminum alloy, brass, and stainless steel and comes with a 150-millimeter x 120-millimeter x 30-millimeter wooden base.
Users must supply the three AA batteries necessary to provide a spark for ignition, as well as 95-octane gasoline and engine oil.
Seb from Bochum, Delaware, gave the kit five stars and wrote, “Engine is well made. Easy to start, and it works very well. Like all mini V2 engines, you unfortunately can not reach very low idle because of too little weight at the crankshaft/flywheel.”
AKR46 from Tosu, Japan, gave the kit four stars and had some additional tips for prospective buyers, writing, “In order for the engine to run smoothly, it is necessary to pour sufficient oil into the moving parts. When the engine was difficult to start, I cleaned the inside of the carburetor, and it started working.”