terrykohler
Well Known Member
I'm currently conducting a condition inspection on my 9A and noticed a broken exhaust hanger on one side (one of the flattened end tubes that fit into the rubber hose had fractured at the crimp). The broken hanger had allowed the exhaust to move a bit more laterally and had begun contacting the nose gear brace. Wear on the gear structure was noticable and would have resulted in fracture if left unchecked.
My friendly AI advised against my plan to pin the exhaust stacks into position and told me that 1/2 inch movement should be allowed in each direction. The fix was to move the stacks outboard as much as my cowl would allow and then cover the six inch section of gear tube with 3/4in. I.D. heater hose which had been split and fixed with hose clamps.
This wear on the gear structure was also discovered on another "A" on RV Row at KPTK. In this case, no broken hanger, but pipes mounted too close together. INSPECT YOUR NOSE GEAR SUPPORT STRUCTURE. CHECK YOUR PIPE CLEARANCE.
Terry
RV9A
N323TP
My friendly AI advised against my plan to pin the exhaust stacks into position and told me that 1/2 inch movement should be allowed in each direction. The fix was to move the stacks outboard as much as my cowl would allow and then cover the six inch section of gear tube with 3/4in. I.D. heater hose which had been split and fixed with hose clamps.
This wear on the gear structure was also discovered on another "A" on RV Row at KPTK. In this case, no broken hanger, but pipes mounted too close together. INSPECT YOUR NOSE GEAR SUPPORT STRUCTURE. CHECK YOUR PIPE CLEARANCE.
Terry
RV9A
N323TP