-Joseph Berki wrote:

Perry and all,

         Once you determine what route the scat tubing  takes, you could
hot wire straight tubing sections out of the blue foam scraps that you

used

in the wings.  Cut the sections at various angles and glue together to

get

curved bends.  Sand to get smooth contours.  You can start with a larger
diameter.  Coat the entire core with silicon and then glass.  Use

gasoline

or other solvent to remove the foam.  Grab the silicon with pliers and

pull

it off of the tube and the inside will be smooth not rough.  I am
interested in your results with the new intake system, Perry.  I

appreciate

the discussion on the exhaust system items as this is a problem in a

pusher.

Joe Berki
Limo EZ
ailerons

Really really great idea Joe. You could also use a hole saw and cut a
bunch of round slugs the proper size. You could make your own deeper
hole saw out of steel tubing. Or just use an arbor or drill press to
cut the foam slugs with the sharpened steel tubing.

Sand the angles on them and glue them together with contact cement
or hot glue.

This sounds like a real break through in fabing composite intake manifold
runners. About two years ago we had a bunch of ideas discussed on
fabing composite intake runners and this is head and shoulders above
anything else we could come up with.

Thanks Joe for sharing that idea.

BTW does anybody know how to dilute silicone RTV so you can paint
it on? How about a source for low viscosity silicone RTV?

I also think wrapping the cores with vinyl electrical tape
will also work but not as smooth as silicone.

Paul Lamar

I worked for a short time in a wholsale supply place and one of the products
we sold was a flexible type of foam rod. Unfortunately I can not recall what
is was called or what it was used for. I believe it was used for inserting
into cracks as a filler. It was availble in 3 or 4 foot lengths and many
diameters probably in the 1/2" to 3" range. It might be handy for making
moulds. Welding rods or dowels could be inserted into them to stiffen as
necessary. If you are familiar with kids and swimming pools these things are
similar to water noodles. I'll try and call the outfit tomorrow and get a
name and maufacturer.

John

 
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