Simply the greatest motor to ever be produced :thumbsup:
The Briggs and Stratton 5 horse, Model 13 flathead, is really easily customizable and can be built by anyone to produce 10-15 horsepower.
The flatheads sadly are no longer in production, but because of the fact they have been being made since the 60's and the Briggs 5 horse, was used for karting there are hundreds of thousands out there and parts are still readily available
Over head valve (OHV) engines differ from the flathead by having the valves in the top of the clyinder head, they produce more horsepower than a flathead (for same displacement) but do have there drawbacks (valves can float and hit piston if governor is removed)
Over head cam (OHC) engines are the same as an OHV but have the camshaft above the cylinder head instead of in the block.
2 strokes, have no valve train and can run at high rpms, they have around double the power of an equal size displacement four stroke, but lack low end torque and can be rather finicky ( some 2 strokes do have power valves and or reed valves, rotary but do not have to be mechanically controlled by a camshaft)
There are a few more exotic types, like the wankel rotary, and a few opposing cylinder designs but these are non-practical and expensive for minibikes
Hope that helps a little
The Briggs and Stratton 5 horse, Model 13 flathead, is really easily customizable and can be built by anyone to produce 10-15 horsepower.
The flatheads sadly are no longer in production, but because of the fact they have been being made since the 60's and the Briggs 5 horse, was used for karting there are hundreds of thousands out there and parts are still readily available
Over head valve (OHV) engines differ from the flathead by having the valves in the top of the clyinder head, they produce more horsepower than a flathead (for same displacement) but do have there drawbacks (valves can float and hit piston if governor is removed)
Over head cam (OHC) engines are the same as an OHV but have the camshaft above the cylinder head instead of in the block.
2 strokes, have no valve train and can run at high rpms, they have around double the power of an equal size displacement four stroke, but lack low end torque and can be rather finicky ( some 2 strokes do have power valves and or reed valves, rotary but do not have to be mechanically controlled by a camshaft)
There are a few more exotic types, like the wankel rotary, and a few opposing cylinder designs but these are non-practical and expensive for minibikes
Hope that helps a little
Theres a wankel for karting... it could easily be done... for 3,000+ bucks
Comet Kart Sales - Rotary Aixro XR50, Aixro XR 50, Rotary Kart Engine, Karting Engine Rotary, RLV Comet Exhaust Sytem\\
In my opinion they are the greatest....
Comet Kart Sales - Rotary Aixro XR50, Aixro XR 50, Rotary Kart Engine, Karting Engine Rotary, RLV Comet Exhaust Sytem\\
In my opinion they are the greatest....