Finally started on my 42% Extra...tackled modifying the motor box to accept a DLE222 4 cylinder today. Was all excited that the motor box was already set up to correctly mount a DA200. Well...the DLE222 is longer than the DA200, so needed to hack off another 3/4" and notch out the motor box to accept the included spare firewall.
Think it turned out pretty well, I used 1/2" square basswood to strengthen the firewall instead of the 2 pieces of included balsa triangle stock, I also pinned all fours sides with 1/8" hardwood dowel for extra piece of mind. I am also very happy with the motor alignment, the laser etching on the firewall was almost perfect and only needed a little massaging to get motor aligned with the cowl.
I Guess the fun starts now...next is working on the baffling, going to use Herve's templates he posted on the FG Thread and then modify for the DLE222. Have a friend with a CNC Router so think I am going to have the finished baffles made from either CF or G10.