Posted for "glong2" <glong2@netzero.net>:

 chat:
 
 After my trip to sun n fun from Colorado, I have cut off my exhaust stacks 4
 inches. I found that at 210 mph there was enough force on them to move them
 very close or touching the insulating blanket. I also added a stainless
 steel sheet between the exhaust pipe and the blanket, using washers to stand
 off the ss sheet about 3/16" from the blanket. Another thing I did was to
 add a second bolt to the exhaust pipe hanger strap to prevent it from
 rotating, giving the strap stiffness in compression. I have not flown yet
 because I am fixing other squawks also, but I am counting on my exhaust
 stack not moving again.
 
 Eugene Long
 Lancair Super ES
 glong2@netzero.net

"""
  I have the factory exhaust pipes on my Super ES.  They stick down some
  10 to 12 inches below the cowls.  Should the pipes be cut...how
  long...and at what angle?
"""