ES Pipe Repair??

[Gray E Fowler]

Mark

 Most of the time I have seen your problem the actual fiber is not broken, 
but the resin is fractured. The stinger is also a low stressed part. You 
do not need carbon fiber for the repair, since you most likely have 
nothing finer than 3K plain weave, use light weight thin fiberglass cloth.

You will really want to clean this good.  Get a coffee can and fill it 
upwith 3-4 inches of acetone or methy-ethyl ketone. Epoxy such as the one 
used on a high temp muffler is very chemical resistant. Dip the entire 
back end up the muffler in the solvent and agitate (in a vigorous circular 
motion-FZ).  If the resin is fractured you need to get the oil off of the 
fiber-so really get vigorous. This method will leave no soap or other 
residue, and is far superior in cutting thru the oil.

Have one or two wraps of fine fiberlgass cloth on the stinger and wet lay 
up with whatever epoxy you have. You might want to pull a yarn from the 
weave and wrap the weave with hoop wraps to keep it snug.  The epoxy you 
have access to will not be as high temp as the original, but it will work 
on the stinger.



Gray Fowler
Principal Chemical Engineer
Composites Engineering
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