JetCat P-80 outer shell dent
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JetCat P-80 outer shell dent
Hi Matt:
My P-80 was hitted by the landing gear during a hard landing causing a big dent in the outer shell.
Compressor and turbine wheel are turning free.
I lighted the turbine but just at minimum, and all seems to be OK
Can I run it in this condition or am I taking the risk of destroy it?
Or is preferable to take the shell out to a machine shop to try to fix it? Or replace this part?
If needed to be repaired or replaced, can you tell me the steps to remove this shell? Seems to me to be an easy job, but I need your advice.
See pictures
BRG
My P-80 was hitted by the landing gear during a hard landing causing a big dent in the outer shell.
Compressor and turbine wheel are turning free.
I lighted the turbine but just at minimum, and all seems to be OK
Can I run it in this condition or am I taking the risk of destroy it?
Or is preferable to take the shell out to a machine shop to try to fix it? Or replace this part?
If needed to be repaired or replaced, can you tell me the steps to remove this shell? Seems to me to be an easy job, but I need your advice.
See pictures
BRG
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RE: JetCat P-80 outer shell dent
Guillermo,
I just tore my turbine down this week and I would wait to hear from matt for an official resonse. What would worry me is the the AIRFLOW restriction due to the size of that dent. Did you notice the temps when you started your turbine? I would think it might run a lil hot. I don't think a replacement can would be that expensive. If not to your could easily remove the turbine from the outside shell and bang that back into a shape.
There is a pretty good size gap between the combustion chamber and the outer shell.. the air does flow through there though.
If you look in the forums for TURBINE TEARDOWN or TURBINE MAITENANCE there is a youtube video link of a ram750 or TJT 750 size turbine.. The teardown is very close to jetcats and your not gonna disamble the compressor or rear fan.. that is all one assembly and will slide out of the shell in 1 piece and allow you to work on the shell.
Hope this has helped some.
Sean
I just tore my turbine down this week and I would wait to hear from matt for an official resonse. What would worry me is the the AIRFLOW restriction due to the size of that dent. Did you notice the temps when you started your turbine? I would think it might run a lil hot. I don't think a replacement can would be that expensive. If not to your could easily remove the turbine from the outside shell and bang that back into a shape.
There is a pretty good size gap between the combustion chamber and the outer shell.. the air does flow through there though.
If you look in the forums for TURBINE TEARDOWN or TURBINE MAITENANCE there is a youtube video link of a ram750 or TJT 750 size turbine.. The teardown is very close to jetcats and your not gonna disamble the compressor or rear fan.. that is all one assembly and will slide out of the shell in 1 piece and allow you to work on the shell.
Hope this has helped some.
Sean
#4
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RE: JetCat P-80 outer shell dent
Hi Guillermo,
Sorry for the late reply. I would suggest sending these pictures to Bob.
As Sean indicates, it is a question of the flow. I have seen dents this big, but not that close to the EGV. Also, at temperature, the stability of the EGV is very important to maintaing good rear bearing life. This is just a very hard call to make. I would have it fixed, but Bob Wilcox has seen 100 turbines for every one I have seen and he might have a different call on this one.
Best regards,
Sorry for the late reply. I would suggest sending these pictures to Bob.
As Sean indicates, it is a question of the flow. I have seen dents this big, but not that close to the EGV. Also, at temperature, the stability of the EGV is very important to maintaing good rear bearing life. This is just a very hard call to make. I would have it fixed, but Bob Wilcox has seen 100 turbines for every one I have seen and he might have a different call on this one.
Best regards,
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RE: JetCat P-80 outer shell dent
Thanks Matt and Sean.
I didn't see the turbine temperature when running at idle but i had the feeling that the rear of the fuse of my F-16 was a little hotter than normal. (Just I am not sure)
But as you and Matt said, air flow will be affected and maybe will affect the rear bearing life.
So as you said Sean, I have seen those videos of turbine tear down and I can take the can out and fix the dent but lets wait what Bob Wilcox has to say.
Matt, how can I get Bob? Is his mail the same mail at JetCat web page?
Or you have a direct contac to him?
Are you going to forward him the pictures or should I do it?
Again, thanks for your advices.
Well, I dont want to send this turbine to Jet Cat as long as I can do the fix in a safe manner and under JetCat guidance.
It is very expensive in money and time to send a turbine from overseas to JetCat. (Almost $ 200 for shipping plus man hours plus ship back, etc)
I didn't see the turbine temperature when running at idle but i had the feeling that the rear of the fuse of my F-16 was a little hotter than normal. (Just I am not sure)
But as you and Matt said, air flow will be affected and maybe will affect the rear bearing life.
So as you said Sean, I have seen those videos of turbine tear down and I can take the can out and fix the dent but lets wait what Bob Wilcox has to say.
Matt, how can I get Bob? Is his mail the same mail at JetCat web page?
Or you have a direct contac to him?
Are you going to forward him the pictures or should I do it?
Again, thanks for your advices.
Well, I dont want to send this turbine to Jet Cat as long as I can do the fix in a safe manner and under JetCat guidance.
It is very expensive in money and time to send a turbine from overseas to JetCat. (Almost $ 200 for shipping plus man hours plus ship back, etc)
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RE: JetCat P-80 outer shell dent
Well, Jet Cat said that this was a pretty bad dent and they were concern about EGV alignment.
They suggested to send the turbine to them.
But finnaly I decided to take the can out and bang the dent out.
Then I reassembled the can again and now all is OK. Even there is no rubbing between turbine wheel and EGV.
Just need to do some tests and if all is OK, fine. If not, I will send it to Jet Cat.
Here are some pictures
Question: Why my P-80 has only 6 injectors? I have seen some turbines with 12 injectors. Or 12 injectors are for a P-120?
They suggested to send the turbine to them.
But finnaly I decided to take the can out and bang the dent out.
Then I reassembled the can again and now all is OK. Even there is no rubbing between turbine wheel and EGV.
Just need to do some tests and if all is OK, fine. If not, I will send it to Jet Cat.
Here are some pictures