I am seeing more and more of these. They must be working fine.
This was on a Honda powered something or other seen at Arlington.
When we first proposed this about a year ago or so  we got a lot of
email whining about how ugly it was. The fact remains it is quick,
simple and it works. It also requires minimal ducting fabrication.
Guaranteed to get you in the air quicker. Especially good on a pusher.

IMHO this guy overdid the opening required. Only a few inches are needed.

Paul Lamar

Here are a few more 3D's and pics for the new people.

BTW most of these people are asking for trouble using automotive hose and
cheap hose clamps. A hose coming off can cause you to crash and die
just the same as a cylinder head blowing off.

I recommend silicone hose and Breeze constant torque hose clamps.
 
Paul Lamar
 
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