Hello Paul,
My name is John Bell and I live in Maryville, TN. I am building a Velocity aircraft and will be installing a 20B rotary engine. I am interested in getting info on intake manifolds for my installation. I will be using Tracy Crook's electronic fuel injection controller and want to use two injectors per rotor chamber. Is there anything yet available that will help? I saw you were working on a 13B intake and was hoping there may be one also available for the 20B three-rotor, or that the 13B molds could be modified for the 20B application. Any help you could send my way is greatly appreciated. Thanks much!
John Bell

Hi John,

There are several ways to go.

A: You can build your own out of aluminum tubing.

B: You can fabricate one out of composites and high temp
epoxy using bicycle inner tubes filled with sand as
a male mold. As shown in this jpg I took of Bernie Kerr's
manifold at Sun & Fun this year. These are a bit long.
Make them in the range of 16 to 20 inches long assuming
you are using a 2.85:1 gear box from Tracy.

C: For the most power see the ACRE NL web site and
build a P-port intake manifold.

http://www.rotaryeng.net/intake.html

This is what we are currently focused on to get the
most amount of power possible. You might not need 375 to 400 HP
for takeoff and climb but at high altitudes it will
give you the most power you can get without a turbo
or supercharger.

D: The Velocity XL might have room for a stock 20B intake manifold.

Paul Lamar

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