- Joined
- Oct 19, 2005
- Messages
- 18,978
This Rare piture is of the Legend John Surtees riding his Norton.
A striking freeze frame of corner loads on vintage bike and pilot.
Its more my style, back and centered nothing hanging out from CoG to keep more mass over the rear patch. Looks to me like he's just about maxed out in phase 2 handling. Ie: leaned with front tire slightly aimed to outside of turn. Front counter steer is tripping bike down while rear trail attack angle is trying to lift bike back up. If front lets go in this state > hi side, if rear spins out first > low side. Inbetween is chassis twist and release we call THE Hinge in Commando's. In other bikes its called no warning crashing going a bit harder just prior.
Note the low rear end by frame angle to road, implies the front is being lifted unloaded in line with fork spring.
Can ya picture what would happen if he kicked rear on out and at same time snatched forks into straight steering to follow road curve direction?
Can ya picture what would happen if he had power and traction to finish lifting front completely out of traction?
Can ya picture what happens to twist-torqued chassis and suspension in either of the above transition states?
hobot
A striking freeze frame of corner loads on vintage bike and pilot.
Its more my style, back and centered nothing hanging out from CoG to keep more mass over the rear patch. Looks to me like he's just about maxed out in phase 2 handling. Ie: leaned with front tire slightly aimed to outside of turn. Front counter steer is tripping bike down while rear trail attack angle is trying to lift bike back up. If front lets go in this state > hi side, if rear spins out first > low side. Inbetween is chassis twist and release we call THE Hinge in Commando's. In other bikes its called no warning crashing going a bit harder just prior.
Note the low rear end by frame angle to road, implies the front is being lifted unloaded in line with fork spring.
Can ya picture what would happen if he kicked rear on out and at same time snatched forks into straight steering to follow road curve direction?
Can ya picture what would happen if he had power and traction to finish lifting front completely out of traction?
Can ya picture what happens to twist-torqued chassis and suspension in either of the above transition states?
hobot