J 75-P-19W ? For jet mechanics

[Shrike6]

How long would one expert mechanic take to rebuild it?

[syf350]

426 hours

[DukeAllen]

You got one handy?

[Shrike6]

If you needed to restore an F-105 to mission-ready status, you need one.

[69camfrk]

All depends on parts you can reuse. New parts are very expensive, and may not be readily available on the open market. Man hours working on this is completely up in the air.

[DukeAllen]

Originally Posted by Shrike6

If you needed to restore an F-105 to mission-ready status, you need one.

Gonna take out ISIS?

[Shrike6]

Originally Posted by 69camfrk

All depends on parts you can reuse. New parts are very expensive, and may not be readily available on the open market. Man hours working on this is completely up in the air.

If we could gather a large number of parts from different sources, and take it as a given we would have all the parts we needed, how much time?

[DukeAllen]

One mechanic? Skilled, unskilled or no help? Full time or hobby? Could take years...

[73sbVert]

Ask Wendy, she knows stuff like that!

[Fastguy]

That depends on a lot of variables. New blades? Balancing the old blades? Welding required? Balancing the assembly? Using the existing fuel system?

[Shrike6]

For simplicity, one expert who has years of experience maintaining them in the field. All parts at hand. An engine in good shape, but needing a going over to bring it to mission ready status. Not a piece of junk, just a good, complete engine that has been sitting around for a long time ( say in a museum). Picture a VERY motivated veteran working full time on a museum acquisition.

[island14]

And just what would you be doing with this when it was ready?

[Shrike6]

Research for a project I'm starting.

[The Cripp]

Originally Posted by Fastguy

That depends on a lot of variables. New blades? Balancing the old blades? Welding required? Balancing the assembly? Using the existing fuel system?

Right down my freakin alley.

25 years in the military gas turbine engine business.

17 years on the J79-7A.

It all depends on the existing condition of the engine you've got.

I'd guess... you've got a TX surplus USAF J 75.

In that case, it won't be hard to ascertain the engine condition, the records will tell the story.

I suspect, for running, little needs to be done... airworthiness is another matter however.

Please PM me if can be of further assistance!

Spares can be had easily, I believe.

[Fastguy]

J79 you say?

If you're ever in MA, give me a call,you can critique the handiwork on this.

Competition Plus.com - Drag Racing's Internet Magazine

[69camfrk]

Originally Posted by Shrike6

If we could gather a large number of parts from different sources, and take it as a given we would have all the parts we needed, how much time?

How many mechanics? And as mentioned, is this engine to be airworthy, or for something else? There are just too many variables to give you a good time estimate. If it was the only project a mechanic had, and all the spares were in place, it could be done in a few weeks. That said, you could get in the motor, and all kinds of shit could be wrong (or right) just depending. If it is to be airworthy, the turbine blades need to be NDI'd (non destructive inspection) ie: eddy current, mag particle, xray, etc. If the motor is for just firing off and making noise on a test stand, the whole thing may not need to be torn down, and a good boroscoping would find damaged blades that would require you to tear it all the way down or not. You definitely don't want a HPT blade exiting the case when you are running it full tilt boogie. That would be bad, Mmmmkay!!

[wwomanC6]

Originally Posted by Shrike6

For simplicity, one expert who has years of experience maintaining them in the field. All parts at hand. An engine in good shape, but needing a going over to bring it to mission ready status. Not a piece of junk, just a good, complete engine that has been sitting around for a long time ( say in a museum). Picture a VERY motivated veteran working full time on a museum acquisition.

using the above info, i would say it would take about 2 to 4 weeks provided no major problems found....

Originally Posted by 69camfrk

How many mechanics? And as mentioned, is this engine to be airworthy, or for something else? There are just too many variables to give you a good time estimate. If it was the only project a mechanic had, and all the spares were in place, it could be done in a few weeks. That said, you could get in the motor, and all kinds of shit could be wrong (or right) just depending. If it is to be airworthy, the turbine blades need to be NDI'd (non destructive inspection) ie: eddy current, mag particle, xray, etc. If the motor is for just firing off and making noise on a test stand, the whole thing may not need to be torn down, and a good boroscoping would find damaged blades that would require you to tear it all the way down or not. You definitely don't want a HPT blade exiting the case when you are running it full tilt boogie. That would be bad, Mmmmkay!!

I would want to take my time and look it over real good.

[Shrike6]

Thanks, Wendy.
I just really needed a ballpark estimate for a reasonable timeline, that would be semi-plausible.

[island14]

Originally Posted by Fastguy

J79 you say?

If you're ever in MA, give me a call,you can critique the handiwork on this.

Competition Plus.com - Drag Racing's Internet Magazine

Neat project...

Do you know these guys George?

[The Cripp]

Originally Posted by 69camfrk

How many mechanics? And as mentioned, is this engine to be airworthy, or for something else? There are just too many variables to give you a good time estimate. If it was the only project a mechanic had, and all the spares were in place, it could be done in a few weeks. That said, you could get in the motor, and all kinds of shit could be wrong (or right) just depending. If it is to be airworthy, the turbine blades need to be NDI'd (non destructive inspection) ie: eddy current, mag particle, xray, etc. If the motor is for just firing off and making noise on a test stand, the whole thing may not need to be torn down, and a good boroscoping would find damaged blades that would require you to tear it all the way down or not. You definitely don't want a HPT blade exiting the case when you are running it full tilt boogie. That would be bad, Mmmmkay!!

Been there, seen that!

The test cell walls at Orenda are four foot thick... wonder why?