Sea King Power Turbine to Gearbox Connection
Cracker,as a point of interest ,how do you control your Gnomes;do you use the `computer Mk1/1A/2,or do you run in `manual...?
Do you have `electrically operated HP cocks`; flight-idle stops, HPT overspeed-trip`and how do you do the `surge-margin checks`...?
Have you had a `surge` on a Gnome...as unless you have an `instant HP COCK` you`ll have a very pretty decorated jet-pipe....?
Do you have `electrically operated HP cocks`; flight-idle stops, HPT overspeed-trip`and how do you do the `surge-margin checks`...?
Have you had a `surge` on a Gnome...as unless you have an `instant HP COCK` you`ll have a very pretty decorated jet-pipe....?
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Cracker,as a point of interest ,how do you control your Gnomes;do you use the `computer Mk1/1A/2,or do you run in `manual...?
Do you have `electrically operated HP cocks`; flight-idle stops, HPT overspeed-trip`and how do you do the `surge-margin checks`...?
Have you had a `surge` on a Gnome...as unless you have an `instant HP COCK` you`ll have a very pretty decorated jet-pipe....?
Do you have `electrically operated HP cocks`; flight-idle stops, HPT overspeed-trip`and how do you do the `surge-margin checks`...?
Have you had a `surge` on a Gnome...as unless you have an `instant HP COCK` you`ll have a very pretty decorated jet-pipe....?
Yes we have had (many
) surges but only ever lost a compressor once, which if IIRC was cause rather than effect, and fortunately we haven't lost any turbines in 20+ years of operation <touch wood emoji>.
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I have a result! The good people at Historic Helicopters have sorted me out with photos of the missing pieces to complete the jigsaw and have also offered some of their spares stock should we go choose!
Complete H.1400 engine and coupling assembly ready for installation into aircraft:
Drive shaft, with Thomas coupling, as it fits to PT output shaft:
Torque tube (actual term Support Tube!) with yoke to connect to the gearbox gimbal ring:
Thanks to everyone who has helped in my search, it is much appreciated
.
Complete H.1400 engine and coupling assembly ready for installation into aircraft:
Drive shaft, with Thomas coupling, as it fits to PT output shaft:
Torque tube (actual term Support Tube!) with yoke to connect to the gearbox gimbal ring:
Thanks to everyone who has helped in my search, it is much appreciated
.
C-B, AAHHHaaa,nothing like the whine of an early morning start on a Gnome,followed by a `WHOOOOSSH`,THEN SILENCE,as there is a realisation the intake blank had not been removed...….!!
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Or the hiss as you Comp wash it to find stores had ordered the wrong grade of walnut shell and all those little pieces blowing out of the exhaust are parts of the compressor blades as well as shell... oops..
Brilliant, so glad the links paid off so handsomely. Interesting to finally see how it installs having worked on Wessex and Puma's, almost a mixture of both.
.
Brilliant, so glad the links paid off so handsomely. Interesting to finally see how it installs having worked on Wessex and Puma's, almost a mixture of both.
.
Last edited by NutLoose; 21st Apr 2020 at 14:38.
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oops. Didn't the Vuclan to the Sky team destroy an engine that way too 
?
Swinging a lamp a little.....b4 walnuts in a land and time Far away,we did comp washes using a mixture of avtur and `distilled` water,which as any `fuel` knows does not mix well,even using a big wooden spoon,so ,trying to keep a steady crpm and PTIT,IN MANUAL THROTTLE was a 3-handed job,one on HP cock,one on throttle,and one waving to the stirrer...didn`t make a lot of difference as the compressor was worn out in about 25 hours,and the later sand-filter mod. didn`t help if it got wet in the tropics........
Not nearly as much fun as starting a Belvedere,cartridge-avpin to turbine starter,....
Not nearly as much fun as starting a Belvedere,cartridge-avpin to turbine starter,....
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oops. Didn't the Vuclan to the Sky team destroy an engine that way too ?
Looked at the range of engines you have BTW
Gnome Wessex... Worked on..
T55 Chinook....... Worked on
Adour Jaguar...... Worked on
MicroTurbo Jaguar...Worked on
You only need a Turmo ( Puma ) and a Conway ( VC10 ) and you have my complete RAF engine technician career sorted.
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Looked at the range of engines you have BTW
Gnome Wessex... Worked on..
T55 Chinook....... Worked on
Adour Jaguar...... Worked on
MicroTurbo Jaguar...Worked on
You only need a Turmo ( Puma ) and a Conway ( VC10 ) and you have my complete RAF engine technician career sorted.
Dave,I sent a note to a retired friend who might assist, but even there,his experience ( he and I joined SA about the same time) might begin after the T-58/S-61 engine/airframe interface issues were designed and tested. I’d suggest you get in touch with both Westland Engr Dept and Rolls and see if they can connect you with some of their retirees who may recall the details you are looking for. I dimly remember conversations about early T-58 high speed shaft issues,but that’s about it.
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Dave,I sent a note to a retired friend who might assist, but even there,his experience ( he and I joined SA about the same time) might begin after the T-58/S-61 engine/airframe interface issues were designed and tested. I’d suggest you get in touch with both Westland Engr Dept and Rolls and see if they can connect you with some of their retirees who may recall the details you are looking for. I dimly remember conversations about early T-58 high speed shaft issues,but that’s about it.
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Dave,I sent a note to a retired friend who might assist, but even there,his experience ( he and I joined SA about the same time) might begin after the T-58/S-61 engine/airframe interface issues were designed and tested. I’d suggest you get in touch with both Westland Engr Dept and Rolls and see if they can connect you with some of their retirees who may recall the details you are looking for. I dimly remember conversations about early T-58 high speed shaft issues,but that’s about it.
They confirmed the compliance at the gearbox input coupling (coloured red) to compliment the gimbal movement. The driven gear, inside this coupling and connected to the input shaft (coloured blue), is crowned to achieve this, much like the Wessex coupling in reverse.
