Fudmucker
Grey Hound
There are some nice engine drawings here:
https://www.ketchum.org/BMWEnginePix/index.htm
Also an interesting pic of a 247 motor converted for aircraft use:
Note that the cylinders (and therefore the crankshaft profile) have been reversed.
The exhaust ports are facing the bell housing where the reduction gear replaces the gearbox.
The inlet is a rather crude over the top arrangement...?
https://www.ketchum.org/BMWEnginePix/index.htm
Also an interesting pic of a 247 motor converted for aircraft use:
Note that the cylinders (and therefore the crankshaft profile) have been reversed.
The exhaust ports are facing the bell housing where the reduction gear replaces the gearbox.
The inlet is a rather crude over the top arrangement...?