Screaming Demon big block bash
This is not official build here, as in laser cut prototype parts and all that. This is a good ol' bash-it-on-the-bench build, mostly because I have more than one idea about nearly everything I need to tweak. So this works better than staring at a monitor.. and more fun.
I am sticking with the wing size, and kludging together a structure around the tank area to make up for lost integrity in that area. Also, I have doubled up the front half of the center ribs, and have added a pair of spars just behind the carb inlet which will tie in to the LE, and whatever else comes as I go. I am pretty sure I can keep it under 4 pounds. I'll extend the rear spar right through the tip to the vertical fins to tie it all together. And I might use something more substantial than 1/8" balsa for the tip fins too..
The LE sheeting will extend further back, and will be supported with sub spars and webs to preserve the airfoil shape a bit better. I'll be using Ceconite fabric covering again, and it stretches so tight it nearly flattens the sheeting without help.
I have a pair of CF "D" speed props coming, I'll get those on the engine and on the test stand when they arrive.
If this holds together, and if I do, it could be my ticket to 200. And it is a small enough project I'll get it done in this lifetime too, that helps. Maybe even this fall, but I'm learning not to make optimistic claims.
MJD