A home made jet engine
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Oil pump
The Ford Escort oil pump shown mounted on it's aluminium plate ready to be bolted to the engine. The round black can under the plate is the oil filter. The two curved copper tubes are the oil inlet and outlet. The piece of black hose beside them is attached to the shaft of the pump. The hose couples the shaft to a round headed bolt which is grasped by the chuck of the drill used to turn the pump. The shaft itself does not have any seals so a small amount of oil does leak out around the shaft. This is normally not a problem on a car as the shaft of the pump goes directly into the engine block and any oil leaks straight back into the sump. The amount that does leak out on my engine is so small that it is not worth worrying about. Back |
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Pump drill
This is the 12 volt cordless drill I use to turn the oil pump. The drill is attached to a mounting bracket that is then attached to the engine. The bracket allows some adjustment so that the drill and pump shaft can be aligned. The drill is used completely unmodified. Instead of the normal 12 volt battery pack I power the drill from an external supply that allows me to control the drill speed. The supply wires simply clip to the power terminals inside the handle. The only other modification was the cable ties needed to keep the trigger pulled in. If you look very closely you can see the drill is actually running in reverse. This is because the oil pump shaft needs to turn anti-clockwise. Back |
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Ignition system
This shows the ignition coil and the small box housing the drive circuit. The mounting bracket that came with the coil happens to have it's mounting holes align perfectly with the holes in the engines Dexion frame. Not shown here is the high tension lead and the spark plug. I am using the cheapest, most common car sparkplug I could get. Back |
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Pump and drill coupling
This is the coupling between the oil pump and the pump drill seen looking down from above the engine. You can see how the inlet and outlet tubes needed to be curved to allow room for the hose clips used to tighten the coupling. The blue hose attached to each copper tube is special oil hose. The oil will attack other types of hose so only oil rated hose should be used. Back |
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