Looking at it from a speed vs. radius viewpoint tends to lead to, "Well of course, if you add speed you'll need to add lean angle to maintain the same radius." Also, the idea of riding in a circle comes in with that viewpoint as a hypothetical way to test the theory. Yes, you can add too much throttle, too little throttle, too late on the throttle and too early on the throttle, all of which can lead to running wide in one way or another.
If you went out and rode in a circle, you'd find a constant throttle position to keep the constant radius. Would that put the bike in a 40/60 f/r balance?
If you found a 40/60 balance in a circle, eventually you'd get enough speed to run wide. Is that applying the rule of when to start rolling on the throttle?
Hi Greg - I like the idea of considering the turn to be a complete circle - it simplifies the visual. And, to be clear, I totally understand and agree rolling on the throttle as soon as steering is complete is the correct way to get the bike to 40/60. The question is does applying the rule change your line compared to the case where you simply hold a constant throttle - and I think the answer is yes - it causes the new line to be wider.
In a constant radius circle - keeping lean and speed constant - you are NOT at a 40/60 balance - adding throttle will provide the balance. To keep that balance, you'll have to keep adding throttle which, keeping lean angle constant means the radius of your circle will have to increase since your speed is increasing.
So, if someone applies throttle control properly, and finds they are running wide, I am wondering if the problem is the fact that they are entering the corner with the perception that their turn will follow a constant radius arc when in fact it will follow the path of an increasing radius arc.