That does sound like a WWI/WWII plane. the engine being a radial is one reason and it's the same concept as the knome engines from the first world war planes except they used cylinder deactivation to control engine speed which explains the sound of an engine surging and spluttering in flight.
Is it possible to disengage the drive (clutch / Kupplung), or does the engine stall if the motorcycle stops ? That would make it difficult to drive..... It's OK, I got my answer on another video, not possible to disengage engine/drive.
erst als 2-Takter dann 1919 als 4-Takter Pax. Im Gegensatz zum einfachen Umlaufmotor bei dem die Kurbelwelle feststeht, drehen sich beim Gegenumlaufmotor sowohl das Gehäuse als auch die Kurbelwelle und zwar gegensinnig. Die Rapp-Motorenwerke wurden 1916 zu BMW. 1920 wurde daraus ein 5-Zylinder-Motor, der später im Prototyp der Megola vom Hinterrad ins Vorderrad wechselte Die Rennmaschinen waren 1924 absolut spitze in der 500cm³ Klasse
When you come to a stop (like at an intersection) the engine stops too. When you want to start moving, you move forward and re-start ignition. There is no clutch.
Is this engine able to idle while the wheel is in standstill? I'm just asking because at the beginning we don't see how the rider started rolling and at the turnaround on the parking place he did not stopped at the Stop sign 🤔😅
This is sitting in the motorcycle museum in Solvang CA if you're ever in the area it's definitely worth the $10 admission. Showing is by appointment only.
haha no gears, no clutch, a mess to start up but the tradeoff was that you got front wheel drive on a bike. it is as fascinating as it is lame. never thought that such a beast could exist
Ok guys... so how does it work? Carburetor stays stationary and the intake runnes get aligned to it as it spins? Do the cylinders fire as they reach the same spot? So many questions...
Like the fighter planes from the great war with rotary engines. That technique had been state of the art these days. Google rotary engine in wikepedia and you will see how it worked thousands of times in the fighter planes of WW1 and in this motorcycle.
It messes with your brain to think of the crankshaft as the axle and of it being stationary while the rest of the engine spins around it and takes the wheel with it.
So fuel delivery on these "rotary engines" was a problem. It was fed through a hollow crankshaft into the crankcase which doubled as an intake manifold. There were identical tubes running from the crankcase up to the intake of each cylinder. Apparantly, changing the engine throttle takes genius level artistry.
@@7MPhonemicEnglish Throttling was only a significant problem on the "monosoupape" (one valve) engines. Those had a transfer port like a two-stroke. They opened the exhaust early so that when the piston is at BDC the cylinder is already at ambient pressure and no exhaust gas goes back into the transfer port (that of course is some lost efficiency already), then they push out the remaining gas, suck in air through the SAME valve (and cooling it that way), close it early so that there is vacuum in they cylinder which then sucks the very rich mixture from the crankcase through the transfer port into the cylinder, where it mixes with the pure air to get the correct mixture. en.wikipedia.org/wiki/Gnome_Monosoupape That of course only works at one throttle setting. Later rotarys (like the one in the megola) had 2 valves and a standard carburetor.
In the 1920ies they still had belt driven and no gear box motorcycles. These had the same "problems". So that had been no problem in these days. Do not judge from todays perspective.
Da sieht man, wie einfallsreich die Fahrzeugtechniker vor über hundert Jahren schon waren. Heutige Konstrukteure könnten sich durchaus etwas abschauen. Ein eindrucksvolles Gerät, wenngleich in der Optik und Ausführung nicht ganz nach meinem Geschmack. :)
The real doktorbimmer Oops. From wikipedia: Rotary and radial engines look strikingly similar when they are not running and can easily be confused, since both have cylinders arranged radially around a central crankshaft. Unlike the rotary engine, however, radial engines use a conventional rotating crankshaft in a fixed engine block. So the frontaxle of the Megola is also the crankshaft. Does that make this a radial or a rotary engine? I'm getting a bit confused here since with the term rotary engine I imagine the Wankel engine like Mazda uses and that looks completely different from this. However when I google "rotary engine" I also get pic's of engines that look like the starengine that's in the Megola ???? So with the cranckshaft staying in place when the engine is running and shutting down the completely when the vehicle stops makes this a rotary right?
OpaSann0 Yes, some Rotary engines do have reciprocating cylinders in a "Radial" arrangement, but not all do. Rotary engines do not have a "Conventional Layout" which includes a rotating mainshaft or crankshaft and flywheel. Rotary engines spin concentrically on a "AXLE" or other fixed, non-rotating hub. The entire engines mass "Rotates" on its axis Invented by Felix Millet, the Rotary layout was also used by Felix Wankel for his "Orbiting Piston" Supercharger and a failed engine prototype design called the DKM-54 The later Wankel KKM-57(Orbiting Piston Motor, not designed by Wankel himself) discarded the Rotary layout in favor of a Conventional Non-rotary layout used by many manufacturers including Mazda... After the Wankel patents expired, Mazda marketed the Wankel KKM under the "Mazda Rotary®" brand name despite the ironic fact that the Wankel KKM is not a Rotary type engine. Cheers! Hyvää joulua ja onnellista uutta vuotta
Yes it's a 5cylinder rotary plane engine of BMW. They have built plane engines in Eisenach and it's a Wankel engine and good racing motocycle 14 HP 640cc 143km/h in the 30s.
