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Post by g8rpi on Jan 27, 2020 15:23:32 GMT -5
After a long break from turbine ownership (GTP30, GTCP70, Saphir, Rover AAPP, Rover fire pump, Lucas CT2301, Lucas CT2023 Williams wr24-7) forced by a change in circumstances, it looks like I'm back. I just purchased a Garrett/Honeywell APU. It's a GTCP36-150, probably a (RR) as its supposed to be from a Fokker 70. I've not seen it in the metal yet but seems to be complete. No FADEC of course so some electronics to do. Picking it up next Wednesday. I can't wait to find out it's condition. Biggest problem is aking space in the gaaage for it.
Robert G8RPI.
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Post by racket on Jan 27, 2020 15:30:39 GMT -5
Welcome back :-)
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Post by g8rpi on Feb 5, 2020 16:06:42 GMT -5
So I went and picked up the GTCP36-150 today. It was about one and a half hour drive each way. Good news is that it is complete with all accessories, starter, generator, HEIU, load control valve, oil cooler etc. There was also a KLM "Removed Servicable" label but no decernable marking on it. The rotor turned OK as well. Not so good news was there was no intake cover and the intake faces up so a good FOD check will be in order before turning it over even dry. I had help loading it, but unloading from the back of the car on my own was interesting ;-) Health and safety would not have been impressed, small wire rope through a makeshift "figure of eight" climber's descender type device to control movement as I slid it down a short ramp from the car. I mangaged not to drop it at least. Next tasks are to get it mobile on some castors and then a good inspection. free image host
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Post by g8rpi on Jan 26, 2022 17:26:37 GMT -5
So almost two years on and very little done with the GTCP36-150. Can't really blame Covid. Things have been busy work wise which does not help. The biggest issue is space. My garage was absolutly rammed with stuff, mostly electronics. The GTCP was in the clear space. What I did get done was purchasing a hydraulic sissor lift trolly. This lets me move it and raise it up to better height to work on. Until last month the only way to get into the garage at all was to pull the GTCP out. I have confirmed that I got a complete engine change unit with all ancillaries including starter and HEIU :-). Ive also done a quick inspection and there is no visible damage to the turbine or compressor. The engine was almost certainly removed from aan aircraft that was being scrapped. I've also manged to improve my knowledge of the engine specificions. Drumwilliam was a great help on here. One thing that troubled me was not knowing the current rating of FCU torquer. I finally found a valid, tracible figure in a document online. It came from an old NTSB incident report (FTW02LA088) from 2003. I found that through a newer BFU incident report (BFU AX001-15) of a falure due to de-icer ingestion causing an overspeed. The NTSB report has a Honeywell test report as an attachment. This report has a computer print out of the ECU test. This lists the torquer current tests. The maximum was 240 mA with 63 and 150 mA appering to be normal range. This information allows me to build a manual drive circuit with a 200mA limit so I can't burn the coil out. Developments recently include renting the next door garage so Im finally able to get to the stuff the was packed into the garage when we moved 14 years ago. And have room to work. Items located include bins containing turbine oil, instruments, a motorised bleed air control vave and clamp, contactors and high current connectors an my old PIC based start sequencer that I previously used on a GTP30 and a Spey Mk101. So when the weather improves Ill start getng some real work done.
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