Originally posted by Francis Fernand
Jim,
No added weight to the Extra 300 XS with the DA-50-R. The engine-ignition-muffler-battery combo is around 4 lbs. If you have more weight than this, you should add weight on the tail.
A ZDZ-40RV combo is around 3.9-4.0 lbs.
I don't know about the first shipments of SIG Extra 300 XS (Without aluminum angles on the firewall), but my owner's manual says that you can place a FPE 2.4 on this plane (40cc gas).
Certainly you can put one there but you are just asking for what happened to me. The firewall is not glued in sufficiently or braced or pinned. It looked like mine was put in with a light coat of CA. Well at 7000 rpm turning an APC 20 X 8, it came loose and ate my hand. Just make sure you fix the problem before it fixes you.
My nub thumb is no party I assure you and I DO NOT want to see this happen to anyone else. Learn form my screw up and fix it.