Scavenger! Build Part 13 Root Tab Fitting

With the fins slots cut the engine mount was slid into position.
On this model, the end of the engine mount tube and mainframe tube are even.

A ruler was slid into the cut fin slot. With the end of the ruler making contact against the BT-50H engine mount tube read the measurement of the ruler.

This shows the thru-the-wall fin tab will need to be around 1/2" long.
I purposely cut the fin tabs longer than needed so they could be trimmed and sanded to fit.




The fins were marked with a pencil.
The TTW root edge line was drawn parallel to the lower mainframe root edge line.







I ended up sanding off the excess tab with 100 grit sandpaper on a block.

I also added a slight recess for a better fit over the tape wrap on the engine mount.