Thanks for that. Not being familiar with that brand I was not getting anywhere with reading the name on the tank.Looks like the fuel tank says Merkel, the rounded fuel tank ends look like this very well could be a Merkel. It could be a Flying Merckel, it's the V-twin model 884 cc, 6 H.P. a little smaller displacement than the present day small HD Sportster.
That is amazing. Engine design has come a long way from those days. I suppose the Merkle twin was a two stroke and a good 80 cc could probably match its power.Funny that the horsepower on that old V-twin engine isn't much more than a Predator 212cc. Think back about those antique engines of that era: They largely were running atmospheric intake valves, ( no intake cam, the suction of the intake stroke pulled fuel air into the engine against a weak coil spring poppet valve..) low compression ratios of probably 4:1, rudimentary carbs, total loss gravity or low air pressure drip engine lubrication. Little or no aluminum castings, most heads/ cylinders and pistons were made of cast iron, very slow RPMs probably not much more than 2000 RPM at top speed.
They were 4 stroke, there's a youtube of some guy who motorized an antique bicycle with a replica of an antique atmospheric intake engine of about 200 cc's he built on a lathe. Atmopheric intake engines are really slow turning and there's a lot of inconsistent firing at higher rpms so it's sort of self-governs..That is amazing. Engine design has come a long way from those days. I suppose the Merkle twin was a two stroke and a good 80 cc could probably match its power.