New 1200s, like the R1200S, brakes???

[acidburn]

How does the ABS work with no power boost / servo?

[repoe3]

Originally posted by acidburn
How does the ABS work with no power boost / servo?

the two have nothing to do with each operation. ABS has been in use for years without servo assist. you could have servo assist brakes that werent ABS. servo just adds force to the braking capabilities and ABS avoids lockup...two unrelated systems, but i am sure they talk to one another when used in conjunction on a vehicle.

repoe3

[BMW Atlanta]

The servo's help enable "smart" dynamic proportioning. By having servo assistance the integral brakes were able to modulate and control both wheels in conjuction to obtain their desired result (faster braking in no brain fashion for the rider)

[BMW Atlanta]

Sorry,...re-read and back on topic here. The Servos do take away rider management, add costs, require regular brake bleeds and add weight. However at the time BMW implemented Integral Brakes it was the superior technology and will probably remain on the touring oriented bikes. However the sport oriented bikes such as the R12S and perhaps now the K12S,R and R12GS will have the new BMW Motorad ABS which is a very simple, but fast and light ABS option allowing the rider more control and less invasive overall in its characteristics

[repoe3]

Originally posted by BMW Atlanta
the sport oriented bikes such as the R12S and perhaps now the K12S,R and R12GS will have the new BMW Motorad ABS which is a very simple, but fast and light ABS option allowing the rider more control and less invasive overall in its characteristics

as it should be.

repoe3

[acidburn]

i ask again. I was not clear.
How does the new R1200S ABS only braking system function?
Basics?

[Deans BMW]

How does the ABS work with no power boost / servo?

My '05 R1200ST now has over 23,000 miles and is equipped with the ABS Servo brakes, excelent and extremely powerful brakes. After riding the R1200S for over 300 miles of full WFO riding in the Santa Cruz mountains equiped with the non servo ABS brakes, my judgement s that the new S brakes are every bit as powerful and as easy to use as my ST, if not better.

[Corky]

How does the ABS work with no power boost / servo?

Don't know how.. But know it does. Much better "feel"


The new brakes are more powerful and certainly not as "grabby" at slow speeds as the ones on my 2004. Very good feel with this new abs brake set up.


Corky


NL Tahoe

[BMW Atlanta]

Originally posted by acidburn
i ask again. I was not clear.
How does the new R1200S ABS only braking system function?
Basics?

Haven't had any formal schooling on the new Motorrad ABS but how it functions is typical of previous generation ABS systems from BMW. It's most comparable to the ABS found on an F650. However the new system has been improved on reaction time and stratedgy. There is no proportioning. It is simply a safety layer and in theory the Integral Servo Assisted brakes can still outstop because of their ability to control both wheels at the same time particularly when only grabbing the hand brake. The Motorrad ABS is beneficial because it adds minimal wieght to the bike compared to the integral and it does not alter the feel/feedback of the brakes until it's in ABS mode. The motorrad ABS is also completely defeatable with the push of a button for track days or when you want to act like a hulligan.

[repoe3]

Originally posted by acidburn
i ask again. I was not clear.
How does the new R1200S ABS only braking system function?
Basics?

there is a toothed ring on the wheels. there is a pick up that watches wheel spin. the moment lock-up is detected, there is a box inline with the hydraulic system for the brakes, it eases off the hydraulic pressure so the wheels do not lock up. each end is independent, i.e. if the rear locks, it will ease up on rear braking only.

what else is there in how ABS works that you are missing?

repoe3

[acidburn]

Repoe, that pretty much answers my question, thx.
i just wasnt grasping the nonservo vs having ABS idea, what you say makes sense, i was over complicating it.
My 2 ABS servo equped BMW seems to pulse and allot when i play with them, i think that is the servo system reacting to the ABS actuating.
So will we be able to convert, probably not.
ABS good, overly active servos systems not good.

[dammitjim]

Originally posted by acidburn

My 2 ABS servo equped BMW seems to pulse and allot when i play with them,

My 2 non-servo ABS BMWs did that as well.

[repoe3]

Originally posted by acidburn
Repoe, that pretty much answers my question, thx.
i just wasnt grasping the nonservo vs having ABS idea, what you say makes sense, i was over complicating it.
My 2 ABS servo equped BMW seems to pulse and allot when i play with them, i think that is the servo system reacting to the ABS actuating.
So will we be able to convert, probably not.
ABS good, overly active servos systems not good.

good deal. to add to the servo-haters anon group...please stand up...that would be me, thx. i despise servo assist brakes. it would be one thing if the servo gave progressive pressure, just more of it, like when a rider squeezes the brake lever. but instead, the computer startes to think on the subject of braking and the same amount of brake lever travel yields two very different amounts of braking force when travelling at different speeds. talk about dumbing down the rider. how are you ever to get good smooth muscle memory when you try and try and try again to use so much brake here or so much brake there, when the computer adds or decreases that amount of force?

ugh. hence why i never complained about the ABSII on my 99 but was super glad not to have the subsequent generations on my later S bikes. bmw finally listened...if you are going to put it on the bike, let us turn it off and do not make is servo-assist. too bad they took all the touring capabilities out of the S bike.

but on that tangent...the R1100S will probably go down in history as more closely related to the R100S and the R1200S will be more closely related to the R90S...just a hunch (even though you coudl still put side bags on an R90S, a daytona winning bike).

repoe3

[Steve Carlton]

I don't mind the servo brakes. The electric whine is kind of space-age, and fun to modulate while looking at the faces of unsuspecting nearbys. I do like using the front lever for both brakes; lazy without penalty, and can keep the right foot on the peg in the sporting position.

Do prefer the cleaner, crisper feel of the new R1200S brakes, though. Like it a lot. A whole lot.

[ErricZ]

F those silly servo brakes. I'll take ABS, fluid and steel anyday over some linked system that actuates when and how much it feels like.

[ninermatt]

What year did BMW start with the "linked brakes" on the "S"