Driving a sport motorcycle on a highway at 70mph or more, what do you must do to the handlebar, to your body, apply or not brakes, accelerate o decelerate, when you take a curve at sustained speed?
When you want to turn a motorcycle at high speeds, the best thing to do is to lean the bike in the direction of the turn, this will help in your turn, turning with the handlebars is a slight maneuver. When you make that leaning turn, is scrubs off the speed a little.
On a motorcycle you actually want to slightly excellent through a curve. It helps to stretch out the suspension and improves corning ability. Never brake in a turn (do it before the turn if needed), if you have to brake straighten the bike out first and then brake. As far as your body goes lean into the turn with the bike, you should still be sitting pretty much straight on the bike as it leans. Lean into the grip on the side your turning and it will make the bike lean into the turn just right for you. ***and for god's sake if you're not on a race bike doing over 140 keep your knees on the tank***
Try and get hold of Keith Codes Twist of the wrist II. It is a book and a video, both of which can be found with a torrent search engine. It explains everything and shows practical demonstrations. Some of the acting in the video is a bit lame but the information it gives you is invaluable.
