[Danimal]

50C is not to bad if all your doing is hovering. You could bring that temp down a little by making some adjustments to your throttle and pitch curves. If your running the stock BLC-75 motor they seem to like to run a higher head speed around 2600 to 2700 rpm. You might also be able to bring the temps down some by opening up more of the vents on your canopy to get some more air flow through it. I noticed in your picture that you only had the two side vents open. You'll probably see the temps come down just by opening up the two on the vary bottom of the canopy. But really 50 is not bad.