Also these little models are often running with as little wing area as you want in the first place. Then there''s the little issue that foam models often do not have the best reputation for stiffness. If you were to truly hotrod this thing for speed you may well find that if you manage to reach racer like speeds then the wings will flex, flutter and rip themselves off the model.

From there it''s all about the motor and prop. Chances are from the look of the prop you have this is not a good motor for flying fast. You probably would be best off to get a motor that has a Kv value in around the 2000 to 2500 range that will turn a small prop at some crazy RPM''s and result in higher propjet like airspeeds.

All in all I would suggest that if you want to go fast you just get a model that is setup for going fast. I believe that there's a version of the Stryker propject ARF foamie that comes with the right motor already. It's mostly the motor and prop that determines the speed of models in this size range. The model design merely determines if it rips itself apart in the air or not.

A couple of options would be to go and buy that Stryker or to get a Speed 400 class racer or if you want to do your own work do a Search in the 1/2A forum for "sheet wing racer" or "swr" to see what some of the guys there have managed to come up with for simple but fun high speed models. It'll still require the right motor to achieve those speeds but the model will be more suitable.