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Old 05-17-2011 | 06:57 AM
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DocYates
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From: Oklahoma City, OK
Default RE: Skymaster F4 pipe and wet start


ORIGINAL: Jet Flash

My Dear Jet Nuno, I am sorry to hear that you had an Hot Start, I am quite sure you did not disconnect the Kerosene tube from the
turbine before you proceed with the primming process, that is very common to happen because if you do not do that of course the
turbine gets flooded without you notice and when you start the turbine it will have for sure an Hot Start or Wet Start, as you wish
to call it, or you have what you call ball valve in the wrong place, to be honest it is not a good idea to have this ball valve in any part
of the fuel circuit, this does not help at all, as you experienced, that only caused you problems.
All this is referred on the manual, I also advise, if you are a new comer to turbines, you should practice on a test bench the first few
runs before you fit the turbine in to the model, also as a beginner, it is advisable to have a CO2 extinguisher near by at all times,
in fact, if you have done all I am telling you now, your exhaust tube and the model would be OK by now.
By the way, have you a Jet Cat official distributor in Portugal? It might be a good idea to go and see them and ask for help, I am sure
they will help and teach you how to operate with your turbine safely, avoiding you having further damage on the model and turbine.
I live in Cape Code, ( Boston area) I will go to Portugal next August on holiday, if by then you still have problems I will be very pleased
to introduce you to this first steps on turbines to avoid all this problems you have had.
Take care.
Why would not be adviseable to have a fuel cutoff valve in the fuel line? I have yet to see a setup that does not use this feature. Matter of fact I once saw an engine have a fuel pump failure, running away resulting in a horrific fire, and without the fuel cut-off valve, it would have been much worse. Sounds to me like something all of us may have done in the past. jetnuno, I don't own an F-4 so I am not going to comment on your pipe problem, but I am sorry to hear of your problems. Take care.
Tommy