![enginehistory.org Forum Index](templates/subSilver/images/logo_phpBB.gif) |
enginehistory.org Aircraft Engine Historical Society Members' Bulletin Board
|
View previous topic :: View next topic |
Author |
Message |
rwahlgren
Joined: 15 Aug 2003 Posts: 323
|
Posted: Thu Nov 07, 2019 20:24 Post subject: What are the failure modes of the Turbo Cyclones? |
|
|
Was reading about a DC-7B that was to be ferried, but to do so they had to lease an engine, and then during the test flight a few days ago they lost another engine. No details of course for us engine types. If there are people here that have a lot of experience with them it would be interesting to hear what you have to say about the failure modes of those engines.
It would have to be a major failure to require replacement.
Master rod bearings? |
|
Back to top |
|
![](templates/subSilver/images/spacer.gif) |
jschauer
Joined: 19 May 2004 Posts: 93 Location: Justin, Texas
|
Posted: Sun Jan 05, 2020 11:53 Post subject: |
|
|
Most of the failures I've encountered were the engines making metal. Most of the metal parts were from the nose case gear reduction. The early BA Wright R-3350s had a weak gear setup and the later post war CA Wrights were beefed up. |
|
Back to top |
|
![](templates/subSilver/images/spacer.gif) |
wstuddert
Joined: 26 Jan 2015 Posts: 17 Location: Australia
|
Posted: Wed Jul 22, 2020 17:35 Post subject: |
|
|
I recently experienced an engine overspeed that resulted in, caused by, the failure of lubrication to the front balance weight bearing. It was a bit of a mystery as the oil flow to the bearing was good when tested static, pumped oil through the system using the preoiler system. The only possible cause was a sludge buildup in the end of the crank shaft. |
|
Back to top |
|
![](templates/subSilver/images/spacer.gif) |
wstuddert
Joined: 26 Jan 2015 Posts: 17 Location: Australia
|
Posted: Wed Jul 22, 2020 17:36 Post subject: |
|
|
I recently experienced an engine overspeed that resulted in, caused by, the failure of lubrication to the front balance weight bearing on a -93 engine. It was a bit of a mystery as the oil flow to the bearing was good when tested static, pumped oil through the system using the preoiler system. The only possible cause was a sludge buildup in the end of the crank shaft. |
|
Back to top |
|
![](templates/subSilver/images/spacer.gif) |
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|