Hi Sparky,

I was looking for TT .40 but changed my mind since its very hard to source.
We do 3 pole race, no composites except wing joiner, landing gear and firewall reinforcement.
(this put covering fiber cloth or koverall in question)
Only 4 engines are allowed, ASP 0.46, OS 0.46, Super Tigre 0.45, TT 0.46 with 15% fuel nitro.
Max displacement is as stated by mfg 0.46, no modification is allowed at all, except removing baffles, everything else has to be factory stock(except glow plug, bearing).
Wing span between 1270mm to 1320mm, 500 sqr inch (3200cm2), minimum 30mm thickness up to 1200mm wing span.
minimum fuse height 89mm and width 73mm inside the chord section.
minimum weight is 1700 gram and max 2200 gram.


That OS 0.46 running 9x7.5 start to lose power for about 5 races session or so, since I believe we are running it well beyond its designed RPM.
I know better flying has significant impact on lap timing, my goal was to have a similar running speed to racing speed but with better lasting engine.