Bobby,
I got one of those, nice product and nice fellow to deal with- what size did you get?
George (down under)
Ben,

I purchased 4 stack from this company in Australia for my first manifold
attempt. They will spin any size you want. It took about 3 weeks for the
parts to arrive and the price is right.

http://www.velocity-of-sound.com/velocity_of_sound/velocity_stacks.htm

Bobby Hughes
(working on new exhaust)

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Ben Schneider
Sent: Tuesday, July 14, 2009 7:33 PM
To: Rotary motors in aircraft
Subject: [BULK] [FlyRotary] Intake velocity stack lengths
Importance: Low


Fellows,

I have been thinking up this crazy idea of trying to make intake
runner tubes out of carbon fiber. My question is regarding length of the
velocity stack. Does the length make a difference? Could a velocity
stack be more or less the entire length of the tube? Meaning, if I have
a 12" intake tube, could the entire length of the tube be a gradual
taper to the diameter of the block opening? Would that mess with the
speed the air is traveling in the tube? Aerodynamics is not something I
have a very good handle on, and am hoping someone out there in Fly
Rotary land can shed some light.

Toughts???

BTW,  Any reasons why carbon fiber should not be used for intake tubes?
May make the velocity tubes a mute point.

Thanks for any thoughts.

Ben Schneider

P.S. Any Fly Rotary fellows going to OSH??? Perhaps a lunch one day or
something.




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