The engine is going to be a jett 50 on a viper 500 (a have a club member i need to beat on low fast passes)

When i check if things are comign loose do you do this right after landing when the engine is still warm? im probably only going to be getting 4 minute flight times

can someone please recomend some props for a jett 50 fire tuned for high end speed, i ahve to order all my props in packs of 6 and it takes a week to get to me so id like to pre order them