Paul,

 With a fuselage tank, is there any place an aircraft (updraft) carb
 could be located to have gravity feed fuel?  I'm thinking light
 weight...  How about p-port engine..  Carb mounted on a longish runner
 low and aft on the cold side of the engine with a plenum that connects
 the p-ports to the runner..


 Matt-

 Interesting idea Matt.

 That should work fine if you have several inches of room over
 the engine. You wind up with a rather large plenum but that should
 be OK if it is made out of stiff stuff like carbon fiber as the
 collapse loads will be high when the throttle is closed.
 You will probably need a couple of anti collapse columns
 inside it.

 Got any cheap used aircraft up draft carbs lying around?

 Paul Lamar


No cheap aircraft carbs..  However, I am a big fan of bolt on and go
flying.  My time is worth something to me.

Matt-

I improved the design so one get spark plugs in and out :)

Paul Lamar