Originally Posted by LGM Graphix

205mph? Hardly. 105mph would be believable, maybe even 150 but the byron bullet was the fastest jet byron ever made and it was nowhere near 200mph. Even the BVM stuff was a challenge to break 200mph with. They would do it but they were 1000x more efficient than the byron stuff.
Don't get me wrong, the Byron F15 was a monster and a really nice airplane, really an iconic airplane for the time, but nowhere near 200mph. With the added weight of fuel and the reinforcing you are doing I would strongly consider a second spar, just my opinion but even the jet legend F15 which is quite a bit smaller has 2 spars. Just my 2 cents.