I have smoke on my plane, I just used the same pump as the EFI pump that Tracy used to sell.  it weighs less than a pound and puts out about the right flow rate.  Built in check valve.  I have not problem with leaking. instant cutoff.  Tank is in the wing and pump in the wing root which keeps the system and oil smell out of the baggage area.

The rotary makes nice hot exhaust which is great for supporting a lot of oil without leaving a residue (except for the 2-stroke oil)

Dave Leonard

On Sat, Dec 6, 2014 at 6:05 PM, Charlie England <flyrotary@lancaironline.net> wrote:

http://www.vansaircraft.com/cgi-bin/store.cgi?ident=1417917551-356-672&action=search

This is made to control fuel to primer ports on a carb'd engine, but would probably do the job. No idea how well it would survive the heat of the engine compartment, where it would need to be for a quick/clean cutoff. Maybe mounted low on the firewall away from the air exit, with the lines running uphill to the smoke port on the exhaust?

Charlie

On 12/6/2014 2:59 PM, hoursaway1 wrote:

Yep, I'm here in Michigan doing holiday stuff & visiting kids/grand kids.  also am working on a smoke sys. for the RV6A Rotary, want min. 3 gal., portable, useing automotive fuel pump, looking for a solinoid valve control for flow ( no dribbling soft smoke trail ).  David R. Cook