Trail-braking and accelerating in corners-

[raydog]

Great conversation you guys, it's obvious of the experience and expertise in this discussion.  A great road racer once told me that you can get a PhD in Physics devoted to this subject so, in terms of our own street application in the twisties, there are 3 primary issues to pay attention to 1)we should work on the rider inputed transition (deceleration, acceleration, lateral g force"the lean") from force to force in terms of smoothness....these forces are completely grounded in our control input and body movement. BE SMOOTH, and bikes don't like alot of TWO of those forces at the same time  2) better to "enter conservatively, exit aggressively 3)racetrack lines and  street lines are different, don't treat them the same (ie road surface width, tyre type, etc.

Raydog

 

[JuiceSC]

I've always had the habit of 'riding the brakes' into the corner and release them after 'turn in'. Just seemed natural to me without reading about it or someone telling me about it. I get my downshifting done before the turn in and start into the corner. Release brakes gradually and immediately apply some throttle. Just enough throttle to maintain speed. Then roll on the gas at or just before the apex. I'm usually full throttle before the exit of the turn.

Is this the 'correct' way? IDK, but it works well for me. And I do this on the bike and in the car btw.

 

[Lamb busa]

(JET-A @ Sep. 12 2007,06:30) According to "A Twist of the Wrist", the front and rear tires will reach 100% traction at different times unless the rider adds some input.  Since the rear tire has 60% of the total contact patch, you want to have accomplished a weight transfer with the throttleto get 60% of the weight onto the rear.  That is the point where both tires will *theoretically* reach 100% traction at the same time.

So, using that information, you should have begun the throttle roll-on prior to reaching the 100% point on the diagram.

I don't ride this hard, so I can only offer the theories I have read about, as I understand them.

Todd

Right! You should be going through the apex of the corner with a 40-60 weight transfer front to rear respectfully! Thats a gentle acceleration! This puts the suspension both in the front and the rear in the middle third of the total travel distance where it can absorb the bumps to the optimum. The apex of the corner being the spot on the road where you have the most lean angle! Obviously that's different for every rider and every ride! So it's not scientific! This technique tries to eliminate mid corner steering input and throttle chopping at the key part of the corner! Remeber, acording to "twist of the wrist" the throttle is your most important suspension tool! Midcorner chopping, throttle on-off only upsets the suspension and the best suspension guy in the world can't help cause your asking the bike to do 2-3 different things at once!