I answered that too. You must have missed it, forum collapses long text. So here it is with your questions, answers in bold.If you want to proceed, can you explain;
From where does this magical load "more than 33.3%" come from?
1. When traveling at constant speed:
Load on rear 50%, load on front 50%
Do you agree? Modern sportbikes are front biased 51-53%F to 49-47%R, but for the sake of simplicity 50/50 is fine.
2. Maximum front braking:
Load on rear 0%, load on front 100%
Do you agree? For stable braking, rear needs to be on the ground, so load won't be 100% on front. You don't see pro riders raising the rear at the end of every straight. So for realistic track riding disagree, from a theoretical physics perspective agree.
3. Maximum rear braking:
Load on rear 33.3%, load on front 66,7%
Do you agree? Your ratios are for stopping power, not load. Look at your 50/50 weight distribution above. Load on rear will be more than 33.3% with max rear braking.
In case number#3 was not clear. Assume bike weight 200kg, rider 100kg. With max rear braking, do you think the total load on rear wheel is only 33.3% of 300kg total mass?