Burt Munro spent 50 years turning a 1920 Indian Scout into a world-record streamliner. He hand-cast pistons with a bl...

i dont know how i made this work but it does

i have improved the gearbox timing rpm limit etc and now its capable of 62 mph

The 1950 BMW R25 features a 247cc single-cylinder engine with a square 68 mm bore and 68 mm stroke. Utilizing an over...

Based on Hugh's HandBuilt specs, this configuration models a modified 1970-83 Yamaha XS650 with a 750cc big bore kit,...

biblically accurate circle levels of performance

I tuned the exhaust to make it sound similar to a G80 M3. Power figures are close, with torque being a bit down. Code...

its now a pentagram not star of david

the crank has a wierd rotational path due too piston layout it acts like V on fire 1 and on fire 2 goes inline

pretty cool 2cyl per bank layout

hits 12k rpm and the pistons are on the verge of sliding out

This is again another very unseen design on here made it pretty easily though

if you thought the mewl engines were wild then you'd be surprised about the origins of this one's lore. Anselmo basi...

does 71mph 10to1 diff ratio accurate aswell

takes a few tries revs up too 6k first of its kind