We fly off rough fields in my country. This year the monsoon finished late (usually it finishes in Sept-Oct but this time it was raining in Nov). On the field we are using, they have just burnt some dry grass and are cutting the green grass. Its a polo field and the season for that has also just started. Since the field was unprepared, till last week I was flying my cheap hack: Phoenix Tiger40 with an engine with scuffed piston. Now in the coming week I want to fly one of my prized airplanes mainly because the Tiger's engine doesnt seem to have much life left. But last week we had burnt grass, grass shavings and tiny bugs (running away from the fired grass) all over the airplane.

Now, I have 2 airplanes: GP Reactor 46 with the 55AX at 8-o-clock and Topstar (Flip3D) with a FS91SII inverted.

With the Reactor, the carb is infront of the engine so there is more likelyhood of dirt, shavings etc entering the carb. But then again there is only prop infront of the carb so less stuff will be raised

With the Topstar, the carb is further back inside the cowl behind the cylinder block and between the cylinder and firewall and facing right way up (because the engine is inverted) so more shielded. But since its further back, the likelyhood of the material being raised by prop and landing gear going into engine is more.

So my question is which one should I put together? Also, what effect will the shavings, dirt etc have on either of the two engines? I dont want to use filters as the power output will drop

Ameyam