Quite a handy engine to have, so far we have been using Ian’s 85 to start the Concorde Olympus 593, the idea is that if Ian is not available on a 593 run day, this 85 can be used instead.
This particular engine came from a BAC One-Eleven (1-11), similar to the one pictured below, the APU was used to pneumatically start the two RR Spey Turbo Fan engines and also provide 400 cycle electrical power to the aircraft.
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/gtcp85-115-02.jpg)
Pictured is the GTCP 85-115 mounted on a basic ground running frame, which in turn is bolted to what was originally a chassis from a Solar T62 generator unit.
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/gtcp85-115-03.jpg)
Details of the GTCP 85-115.
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/gtcp85-115-01.jpg)
I made the control panel from one of my favorite panel templates and as always mounted in a Peli 1430 Case. The gauge blanks are for monitoring the alternator, should it ever get wired in.
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/control-panel.jpg)
Control panel, GTCP85-115 and the Olympus 593 in the background for which it will be used to start.
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/control-panel-engine.jpg)
First run of the APU, a couple of finer points to sort, but overall I’m very happy with it.
10/12/2022
Christmas GTCP85-115 Engine Run And Light Bulb Fest 🙂
I never really had the urge to light bulbs with my engines, but now thanks to Paul and Ian I can see the fascination with it. It’s time I installed the required hardware and buy some of my own High Power Lamps. Generator plate with specs below, basically capable of about 83 Amps @ 208 vac.
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/gtcp82-115-06.jpg)
3 Core 10mm Squared Flex from the Alternator.
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/gtcp82-115-04.jpg)
In to a 32 Amp 3 phase breaker, arguably I could go bigger on the breaker, but I don’t see a time when I would need that sort of power and finally in to a 3 Phase connector. (Obviously being 400Hz, not for standard 3 phase circuitry)
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/gtcp82-115-05.jpg)
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/gtcp82-115-11.jpg)
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/gtcp82-115-12.jpg)
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/gtcp82-115-13.jpg)
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/gtcp82-115-07.jpg)
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/gtcp82-115-08.jpg)
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/gtcp82-115-09.jpg)
![](https://jetpower.co.uk/wp-content/uploads/gtcp85-115/gtcp82-115-10.jpg)