Quick brake question

[Spud]

I've just changed the front and rear pads on my '14 Gs (first set of front or rears @ 25000 miles and still plenty of meat left)
Thought I'd do the "spin the wheel grab the brake" thing to make sure that nothing binding and the brakes actually clamped the discs etc.
I was a little surprised that squeezing the brake lever only worked the front brake and not the rear. The foot lever worked the rear as normal.
I decided to try it with the engine running, and sure enough, the front brake lever activates front and rear.
So is the braking system some kind of servo system, that only works when the engine is running for the rear ?

I'm just curious .... Cheers

 

[Sea Dog]

I imagine the clever Bosch abs control unit apportions the brake force distribution so that would need to be powered up before it worked rather than a 'simpler' (have you bled one?!) linked brakes solution like the one in the late 90s Honda for example. Someone who knows the ins and outs will be along shortly.

 

[Karlos]

Indeed Sea Dog is correct. If you read the sales info, this is a feature BMW explain, i.e. that the braking system is linked via the abs module/pump. I wouldn’t try and change the fluid on a modern abs unit unless you have the software to connect to the module and run the pump whilst bleeding the system.


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[Mark Hooton]

Spud - I've the software and the hardware to do this if you need it and I only charge red wine


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[Spud]

Thanks for the very kind offer Mark. I'm happy with changing the pads for now, but will let ya know !!!

Spud - I've the software and the hardware to do this if you need it and I only charge red wine


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[discoed]

I have been wondering about braking and the linked nature of the GS system. I have always followed the 75/25 split (front/rear) in the dry and 50/50 in the wet. Does the linked system mean that the system takes care of this split governed by the 'mode' that the traction control is in i.e. rain / road..etc. Or do I still need to follow my old practices of braking. I wonder if there is a danger that if the bike is also actuating the rear brake as well as me doing it then too much braking effort ends up at the rear wheel.

..hope this makes sense!

 

[Sea Dog]

I have been wondering about braking and the linked nature of the GS system. I have always followed the 75/25 split (front/rear) in the dry and 50/50 in the wet. Does the linked system mean that the system takes care of this split governed by the 'mode' that the traction control is in i.e. rain / road..etc. Or do I still need to follow my old practices of braking. I wonder if there is a danger that if the bike is also actuating the rear brake as well as me doing it then too much braking effort ends up at the rear wheel.

..hope this makes sense!

Basically, yes, let the bike do the clever brake force distribution stuff. I went to the same school as you, and then became teacher of that braking technique. Mr Bosch hadn't fitted his clever electronics then though, and things are rather different different now. It takes a bit if doing to use the front lever only but, simplistically, that's how the system is meant to be used for road riding. Have a good read of the manual so you understand what's really going on.

 

[discoed]

Basically, yes, let the bike do the clever brake force distribution stuff. I went to the same school as you, and then became teacher of that braking technique. Mr Bosch hadn't fitted his clever electronics then though, and things are rather different different now. It takes a bit if doing to use the front lever only but, simplistically, that's how the system is meant to be used for road riding. Have a good read of the manual so you understand what's really going on.

Thanks Sea Dog - I need to re-train myself then!