Time to turn this box into something with smooth sexy curves ! After sanding down the NACA scoop and sanding the foam to shape around the rear bulkhead area, the next task is to shape the aft end around the firewall so it smoothly flows into the forward fuselage.
The first step is to remove the foam covering the longeron and LWY from 5.5" ahead of the FW aft. This is where the main spar will fit and you will need this area to tie in the glass when it's installed. You also need to bevel the edge of the remaining foam into the longeron and LWY so glass from the fuselage can smoothly tie into those parts. Some builders beveled the entire length of the foam edge but indications are that this is only needed where the foam leads to the longeron or LWY. The pics below show my interpretation of how this is supposed to be done.
|Aft fuselage side before foam removal|
|Aft fuselage side after foam removal|
|Aft fuselage side after sanding the transition|
from the fuselage side to the firewall
|Corner after the initial 45 degree shaping cut w/ a saber saw|
|Here you can see my shaping tool|
with center marks and my corner line.
|Very smooth and even results|
After the front half is sanded to shape to about the middle of the landing brake, the area starts to change so that it blends nicely into the aft shape at the landing gear bulkheads. This was the hardest part to get correct and make sure both sides match. I over sanded a bit in some areas and had to go back and fill/sand with micro to get it correct. Here's how it ended up.