from this thread
http://forum.svrider.com/showthread.php?t=31867thought it basically addresses this perfectly:
keith code on braking and downshifting
Brake/Down Changing Gears Like a Pro
Barriers Open Doors
To make real improvement there must first exist a real barrier to overcome or a real result to achieve. These are always based on the rider?s own desires: to go faster; be more in control; have fewer panic situations; put it all together into a smooth flow or simply remove doubts and questions they have relating to those goals: when do the tires slide, how hard can I brake, how far can I lean the bike and so on.
When you look at it you?ll see that there is very little difference, if any, between a riding barrier and a riding goal; they both have the same stumbling blocks. They both have an end result to achieve. They both have some fear or uncertainty or distraction attached to them. There is always a barrier.
The Braking & Downshifting Barrier
An example of a common barrier would be the complications that arise from the hurried and slightly frantic control operations that stem from not learning to smoothly and simultaneously brake and downshift for traffic lights, obstructions and, of course, corners.
Doesn?t sound like a life or death threatening situation but when inspected closely you see what impact it really has on a rider?s attention and how they are spending it.
Check it out, if the rider can?t do braking and downshifting, simultaneously and smoothly, they are forced into one or more of the following attention draining scenarios:
1. Slowly letting out the clutch to make the downshift smoothly. This requires attention to be spent and is the most common way uneducated riders handle it.
2. Having to change gears once the bike is stopped. When the bike is stopped even the best transmissions can be sticky. Gears change more easily and more positively when the bike is moving. It causes less wear on the gearbox to change the gears while you are moving.
3. Having to change the gears after the braking is completed for a turn. That means doing it in the curve. This is distracting and can upset the bike, to say nothing of the rider.
4. Alternately going from the brake to the gas to match revs for the downshifts. This has the bike pogoing at the front. It does not get the bike slowed down quickly in an efficient manner. This is very busy riding.
5. Downshift before braking. This is fine for very relaxed riding situations at slow speeds but is hazardous to the engine if the rider is in ?spirited cornering? mode as it provides the opportunity to over-rev the motor and bypass the rev limiter that protects it. Could be very expensive. In an emergency situation you don?t have time to do this because you should be on the brakes right away. Not only that but some emergencies require you to brake and then get on the gas right away for accelerating hard to avoid things like cars running a light on you. In this case the rider would not have the time to get it done.
6. Forget it entirely and just go through the corner. This forces downshift(s) to be done at the corner?s exit thus losing the drive out and complicating the whole thing by having to make a gear change when they should be rolling on the throttle. This is distracting and not smooth at all.
Coordination And Concentration
It is true that if a rider was uncoordinated and attempts simultaneous braking and downshifting it could be dangerous. For example having the front brake on along with the power can make your front wheel lock up.
On our panic-stop training bike I have seen it many times: the rider aggressively squeezes the brake and unconsciously rolls the throttle on at the same time. It?s spooky to watch. So yes, practice and coordination are necessary, you will have to practice.
More importantly, you have to make a decision. Are the 6 potential distractions above likely to get you into trouble? They do break the rider?s concentration even if only slightly. In other words: if you aren?t a super hero at multitasking each of the 6 is a negative in comparison with braking and downshifting simultaneously.
In Control = In Communication
Continuous perception of your speed is how you control it. Accurate turn entry speed is critical to good, confident cornering. If you are worried about your speed, you are distracted by it.
Finding the right turn entry speed (for you) is far easier when the braking and downshifting are happening in one continuous flow of change. When compared to one that is chopped up, incomplete or creates anxiety like having to shift in the turn, it?s obvious which scenario is better. Your Sense of Speed is a precious resource and is far more accurate when monitored as a steady stream with your awareness.
Maintaining a continuous state of awareness of what the bike itself is doing is another of the true benefits of this technique. You always know where the engine speed is in relation to the road speed and that improves your feel for the bike.
Your communication with the machine improves; no false signals or guess work; no waiting to know how the bike will respond in any of the above scenarios. You ability to maintain communication with the bike is important input.
Naming It
Simultaneous braking and downshifting. I?d like to shorten it to something like brake-down. Car guys call it heel and toe, which is a nice, short and simple way of saying they are simultaneously using the brake pedal with their toe and revving the motor with their heel. In some cars you just put the ball of your foot between the brake and gas pedals and rock your foot side to side to do it, it depends on the pedal arrangement. On a bike, provided the brake lever is comfortably adjusted to fit your hand, they are always in the same position for our maneuver.
Alright, for now it is brake-down. It would be interesting to have a non rider hear about you executing a ?breakdown? coming into a curve; sounds pretty dangerous. How about fist and fingers or palm and fingers or B&Ding, ?
Whatever we call it, it works to simplify corner entries and puts the rider in command of and in communication with his machine to the highest possible degree.
The Sequence
1. Gas goes off.
2. Brake goes on.
3. Bike slows some.
4. Clutch comes in.
Maintain brake lever pressure.
5. Blip the gas rapidly on and off. (Usually no more than a quarter turn).
Maintain brake lever pressure.
6. During the blip make the gear change positively and quickly.
Maintain brake lever pressure.
7. Clutch comes out.
Maintain brake lever pressure until desired turn entry speed is achieved.
8. Release brake smoothly.
Bear this in mind: the quicker you do steps #1 through #7 the better.
Brake Lever Control
Expert use of the brake during this entire cycle means that you can maintain, increase or decrease the pressure as desired, without abruptly stabbing or releasing the brake lever.
Number of Fingers
Some riders let their finger(s) slide over the brake lever as they blip the gas. Others grab the brake lever with the tips of their finger(s) and still get a continuous lever pressure without the bike pogoing up and down.
Whichever way you do it is fine. How many fingers you use for the brake is up to you: one, two, three or four, this is your choice although I recommend you try just two fingers, your index and middle ones.
What?s Important?
Braking is important, it is life and death on the street and vital on the track. Changing gears is not. You can still make it through the corner or get the bike stopped without ever touching the gears. But, riders do have the six above scenarios to contend with if they can?t do the fist/finger, down-brake, palm/finger, B&Ding technique.
Learning How
The fact that riders have a problem doing this technique led me to a solution. I?ve built a bike that trains it. We call it the Control Trainer. It takes you through the technique, step by step.
The trainer?s computer program talks you through the whole sequence and it points out your problems and how to correct them. The computer is hooked up on a static ZX9, you can?t ride it but you do get the coordination/muscle memory necessary to do it for real.
Each of the controls is monitored for: correct sequence; correct timing of the clutch and gear changes; correctly sized throttle blips and consistent brake pressure, throughout the whole process.
With or without my Control Trainer, anyone can learn to do it. Start now.
? Keith Code
