So educate me on brake power.....

[flatbutt]

versus rotor size. My M696 has RIDICULOUS stopping power. The rotors are large 320mm with 4 piston calipers. So is it the 4 pistons or the 320 mm or both or what? Dang this thing stops, I nearly dumped it in my driveway.

[PFFOG]

Yes and yes, but mostly the 150 lbs less that they don't have to stop vs the donkey. My guess is bike and rider are 75% the weight of the R11S.

[AZ-Twin]

It is a Ducati, they just stop better.

[shreddr]

there is the piston size of the master cylinder factor as well

[flatbutt]

Originally Posted by shreddr

there is the piston size of the master cylinder factor as well

ah ok, I need to spec that

[Chris Canning]

Originally Posted by AZ-Twin

It is a Ducati, they just stop better.

The reason for that Brembo have a stock supply set up for manufacturers,the KTM RC8 has them fitted,on the outside the 1198 has the same,but Ducati stipulate a different internal spec.

[PFFOG]

Originally Posted by shreddr

there is the piston size of the master cylinder factor as well

Actually it is the ratio of Master/Slave cylinder total cross section, Pi x r^2 *x # of bores.

[throttlemeister]

Originally Posted by PFFOG

Actually it is the ratio of Master/Slave cylinder total cross section, Pi x r^2 *x # of bores.

Agreed.

Different size discs and cylinders generally only make a difference in feel, bite and force required. That difference made you almost drop the bike, not brake force. Most modern bikes, the R11S included, can easily lock the front wheel when building up brake pressure. In other words, they all achieve maximum possible braking force. Stopping distance is then decided by weight, length and CG, ie a K13R can easily out-brake a supersport bike because of its low CG and long wheelbase, which makes it very hard to list the rear. Supersport bikes on the other hand are generally not limited by braking power, but by preventing flipping over.

The reason the Duc appears to brake so hard, because it has very high bite and requires very little force to activate (1 or 2 fingers is more than enough), giving the impression of very instant and very hard braking.

[PFFOG]

The other slow speed detriment for the Duc, is the VERY small lock to lock steering angle. Don't know how many times I had to make a foot save doing u turns and slow speed parking lot maneuvers, due to the bike I was riding had very little steering angle available, or my damn oversize tank bag getting in the way.

[flatbutt]

Originally Posted by PFFOG

The other slow speed detriment for the Duc, is the VERY small lock to lock steering angle. Don't know how many times I had to make a foot save doing u turns and slow speed parking lot maneuvers, due to the bike I was riding had very little steering angle available, or my damn oversize tank bag getting in the way.

yup! had that experience last night . cost me a mirror.*sigh* however, I must remind myself that I dropped the donkey many times while re-learning to ride her.

[AZ-Twin]

I bet rake and trail have something to do with it also. Anyone smart enough to confirm or deny that want to chime in?

I just think of a lab in Physics class where we had to push a brick on a board with a stick, then change the angle of the stick which put more force down on the brick and made it harder to push because less force was going towards the forward motion of the brick, and more force pushing down was increasing the friction between the brick and the board.

[PFFOG]

Ahh, Vector geometry as it relates to force