"OK", here's the plan so far. I found out that my employer sells a nylon tubing in sizes 1/4>1/2" ID with fittings. It is rated up to about 60 psi and is made to carry hydraulic oil, temp rating over 250 degrees for sure.

The plane is set up with a Webre 120 and tuned pipe inside the fuse.

If I follow wbrain's post I can easily get smoke to the wingtips. Unique, but would it become boring?

I can do both by using the new smoke nozzle injector and wrap the pipe, add one valve and wingtip is on and off.

Might be adding to much weight. Will have to weigh the finished pieces and do some calculations.

I know the CG Ultimate ARF flys really well on an OS 1.08. that's been my biplane trainer. That plane weighs 9.5 lbs. The smoke system added 1 lb. (total 10.5 lbs.) with it's own battery. You can mount two 16 oz tanks side by side on the CG in the stock Ultimate fuse. With the tuned pipe in the fuse have not yet determined tank arrangement.

This board is great, the people here are very helpful. Thanks