RCU Forums - View Single Post - Wren 160 failures
View Single Post
Old 02-25-2014, 10:28 AM
  #19  
CRX Turbines
 
Join Date: Feb 2006
Location: East Aurora, NY
Posts: 428
Received 5 Likes on 5 Posts
Default

Well if this is the case then lengthen the intake. Correct? I am curious about the diameter and whether 126K is excessive for the design.

Originally Posted by jacojet
I suspect that the air intake to the compressor is too shallow. Air entering the compressor is too turbulent and is buffeting the blades. If you look closely at the attached photo you will see that the blade that is cracked, but not broken of, is bent in the opposite direction than what you might expect of a blade coming of because of material quality. It is clearly bent towards the inside, as opposed to the outside because of centrifugal force. That shows that a force was applied to the top of the blades, causing them to bent to the inside and eventually break.
Even 160's that was upgraded to the new machined compressor also failed, although some lasted longer because of the stronger compressor, they eventually fail, or will fail. This proves that the stronger compressor did not solve the problem but only prolonged the phenomenon.
Compare the intake bell with any other turbine, and you will notice how shallow it is.
Sorry, don't know the diameter of the compressor.