Those dimensions are an off-hand estimate. The plane is at home currently so I can't measure to be sure. I could have cut out more but I feel it might effect the structural integrity if more were trimmed out too much. I avoided cutting into the side formers, I just cut the bottom sheeting. I am actually going to go with the Windsheild wiper motor smoke system MinnFlier has documented. It is basically the same as the TME system.

http://www2.towerhobbies.com/cgi-bin...6&I=LXGVU1&P=K

I do like TME's new system (link above) because it is now computer radio programmable like the slimline or sullivan models but is not packaged as a cumbersume large unit. This is especially important with a smaller plane like these because balance options are so crucial and space is so limited. My plan was to place the radio and smoke batteries under the hatch, a 10oz Dubro tank mounted horizontal in the bay above the wing and as far forward as it can against former F3 I believe to be right at the CG. Then I would mount the smoke pump behind that on a built up tray. The 10oz smoke tank capacity is smaller than I wanted but it fits the space perfectly and allows enoungh space for everything else.

With precision use of the smoke I think 10 oz will be fine.