Reply to thread

Message: [QUOTE="KTM520Man, post: 199223, member: 22921"] Yes wind and air resistance are outside forces, however the air resistance you get moving forward is not going to be changed significantly by the orientation of the bike. To increase air resistance my usual method is to open my mouth wide and scream so I can increase my surface area and get the push back from the breath (equal and opposite and all). In a cross wind it would change as the surface area the wind had to push on would be different. The reason whipping the bike lowers the trajectory is because you are shifting the CG of the system as you go. When you whip the bike to lower trajectory you do it as you leave the face of the jump. When the bike is brought back to verticle the CG still follows the same path it would, but now the bike is completely below it. This lets the tires hit earlier even though the CG has followed the same path. It would be easier to show what happens with some pictures. Hell reading it without picturing what is going on in my mind confuses me, bu if you throw a hammer so it is spinning end over end it spins around the CG. The CG will try and land in the same place no matter what. If the handle of the hammer happens to be going down at the right time though that part of the hammer will hit sooner. As far as wind goes it is an outside force, but if it is constant you still follow a smooth arc, just one that has a sharper drop at the end of the arc. If a gust of wind hits that will really mess things up and make the path you and your bike follow change. Hopefully not too dramatically. On the face of the jump there are tons of factors that can change what happens when you jump, but once in the air all you can do is shift your orientation around the CG or hope that a friendly gust of wind helps save your bacon.:) [/QUOTE]

Verification: Which ocean is California closest to?