Dellortoman
Hero member
- Location
- Tasmania, Australia
Is that a morse transmitter? Fantastic. I presume it all packed away into a box when travelling!
It looks like an old ignition system. The great-grandfather of the Ignitech box. The magneto with the crank handle near the bottom of the picture is the starter for multi-cylinder engines. I don't know what the morse key is for. Possibly a kill switch.
Starting procedure was to use a hand pump to pressurise the fuel system, then turn the engine over a couple of revolutions (with ignition off) using the crank handle (or propellor ion an aircraft) to prime the cylinders with fuel mixture. Next step is to switch the ignition on and crank the magneto handle as fast as you can. That magneto fires all spark plugs. One of the cylinders will have a gut full and be near enough to the right part of its 4-stroke cycle to fire and start the crank turning. As soon as the engine starts, the engine driven magneto takes over, firing each cylinder at its correct time. It's quite a simple system that eliminates the starter motor. I imagine that starter motors in the early 1900s would have been big heavy things. Weight saving was an important consideration for flimsy WW1 aircraft, so the magneto starter was used extensively in early aviation.
Those big clunky things on top of the box appear to be the ignition coils. I dunno what's inside the box, but perhaps it's the engine driven magneto.
You can see a hand-crank magneto starter in operation at about 23 seconds into this video







