Rolls Royce / Snecma Olympus 593
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Olympus 593
Olympus 593
The re-heat petals are driven by air bled from the compressor, the two pipes can be seen in the upper third of the picture. These have now been removed and have been blanked at the manifold.

This is pretty much all the wire patching that is required to run the 593 up to idle speed, colour coded to help quick testing and problem solving should any undesired events occur.
Olympus 593
Olympus 593
Jon came over from Oxford for the weekend to give a welcome helping hand with the de-engineering of the 593. To keep spirits up on what was a cold couple of days we had the occasional glass of Port, quite a civilised way to work on a Concorde engine me thinks.

The main stumbling block so far is building an electronic control unit for the throttle actuator unit (Pictured on the left), but whilst reading a telephone directory Jon stumbled upon some satellite wiring diagrams and the wiring appeared to be very similar to the wiring diagrams we had for the 593, thus a Eureka moment occurred and a throttle control unit is now in the making, watch this space!

Olympus 593
Olympus 593
Throttle actuator removed exposing the throttle drive spline.

A close up of the throttle drive spline.
Olympus 593
Olympus 593
Throttle actuator unit drive connection.
Interestingly the units gearing is lubricated with fuel, a novel idea I thought.

One of the jobs that we have undertaken is to examine as many accessories and bits of pipe work for signs of damage and water ingressas possible. Pictured is a typical example, in this case the fuel re circulation valve was examined, slight corrosion and furring can be clearly seen on the seal plate.

Olympus 593
Olympus 593
Digging a little deeper in to the valve and more water was found, a clean in the ultrasonic bath and a god rub down with an oily cloth soon had it looking like new(ish) again.

Another job for the ultrasonic cleaner.
Olympus 593
Olympus 593
To make running of the engine a little easier an additional tank was bought for the lorry to be used as an auxiliary (Jet Engine Only) tank, I could not rely on the 593 self priming so a fuel booster pump will have to be fitted, so I started of with a nicely cut hole.

A 15mm flange was drilled and tapped with fixing points for the fuel pump and then welded on to a section of round tube.
Olympus 593
Olympus 593
This was then brazed electronically on to the fuel tank. Originally I used Hammerite to paint the tank, but it literally peeled of after a few days, so it was a good opportunity to paint the tank again with an enamel paint.

Pictured 1 x fuel booster pump, 28 volts @ 9 amps thank you very much.
Olympus 593
Olympus 593
Booster pump fitted and sealed with flange sealant and a 0.5mm gasket.
1.25" fuel hose has been used and connects to the largest single fuel filter assembly that I could find, this will then connect to the Olympus 593 or RR Spey, depending which engine is on the Lorry. I'm not worried about fuel flow at the moment as the 593 will only be run up to idle.

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