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Posted for "Ed Anderson" <eanderson@carolina.rr.com>:
Ed, can you tell me more about the flex joints shown in the photo? Are
they
off the shelf units?
Yes, they are Peter. They are "ball" joints used by the aircraft exhaust
folks. Not cheap -cost me around $50 each back 5 or so years ago, but they
seem to last. The two halves of the ball are held together with three small
bolts with a heavy spring that pushes the two halves together. So far the
heat has not yet destroyed the temper of the springs, but I have adjusted
them once since installation to make it tighter.
. I've seen another cheaper (and perhaps better?) alternatives. See
http://www.nickson.com/4_Products/FEConn%20Folder/flexexhaust.htm
http://www.epiflex.com/newviewflex.htm I understand that JCWhitney stocks
them in their catalog. Some have stainless steel pipes on the end and
others have aluminized steel - so you need to check that out. I suspect
that these are heavier than the aircraft ball joints but probably less
expensive.
I found my aircraft ball joints in AirCraft Spruce and Speciality catalog.
Ed
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