50 metres is a hell of a long way tho... be aware that all your distance perception in actual measurements (not just judging time/speed for when you'll hit stuff etc) goes way out the door as soon as you're moving (even walking changes your perception of distance).ride4fun said:yeah supertpoweredshore's got it. it needs to be at least 50m so the rider has a comfortable amount of time to make the first jump onto the platform and gather some speed to clear the gap