folk on here have a fundamental misunderstanding of how disc brakes work
I think some people are just a bit more open minded about the possibilities . . .
I for one am well aware of how they work in general, but we're talking about a very specific set of circumstances which may occur and there's anecdotal evidence to support this.
Like chem trails? 😂
my understanding was the thicker rotor puts the caliper pistons in an ever so slightly better position in the cylinder, compensating for a minor design flaw/preference really.
Shimano brakes have variable throw through the stroke, to increase the retraction of the pad vs the pressure on the pad. pressumably this is managed at the lever end
ive also heard of people bleeding brakes with slimmer than specced brake blocks in, to get more fluid into the system.
Similar to over filling hope brakes because the diaphram doesnt have enough flex to use all the pad without drawing air.
folk on here have a fundamental misunderstanding of how disc brakes work
i think youre only looking at the fundermentals of how disk brakes work, and ignoring the nuances of lever design, seal design, master and slave cyclinder design, reservoir design and how they all interact with each other
Shimano brakes have variable throw through the stroke, to increase the retraction of the pad vs the pressure on the pad. pressumably this is managed at the lever end
correct - so this will have no difference at the pad end of the system. the lever is still working in exactly the same way no matter how far out the pad is at rest.
Same as overfilling the system - all thats doing is setting the pads slightly further out to compensate for sticky pistons. As soon as you get any wear on the pads then overfilling makes no difference at all.
the basic issue with bicycle discs is that its easier to bend the disc than it is to free a sticky piston so once one piston sticks then the disc is pushed over by the remaining working piston. Particularly true of Hopes hence the hope way of centralizing pistons.
99% ( made up stat!) of all brake issues are down to sticky pistons. I lube mine and never have these issues
I lube mine and never have these issues
Be careful with this. A clean up and smear of fluid is all that is needed.
Over-lubing can make the seal too slippery and stop it retracting the piston as intended
This thread is an incredible archive of fundamental misunderstandings of brakes.
All to be summarised by ‘Stan’ for years to come 😀
Over-lubing can make the seal too slippery and stop it retracting the piston as intended
That's not how disk brakes work. This thread is an incredible archive of fundamental misunderstandings of brakes.
Well, Magura and Shimano don't mention lubrication
Observe the movement of the pistons: if the pistons move very unevenly or individual pistons do not extend at all, mobilization can help.(Magura)
SRAM, gives the detail,
The application of SRAM Hydraulic Brake Grease on top caliper pistons can cause two issues. Firstly it can cause a slipping of the caliper pistons, which results in intermittent rubbing of the pad on rotors. The second is less than-ideal piston movement - this comes from the caliper design, where a gland is used to allow for piston roll forward and back. If this gland is blocked by debris mixing with the SRAM Hydraulic Brake Grease, it will restrict movement and again cause issues with rubbing.
So which bit of my post is a "fundamental misunderstandings of brakes"?
Formula and Hope do allow a little lube, but that isn't the same as "over-lubing" which was the point of my post ^^
All to be summarised by ‘Stan’ for years to come
Oh, I'm so looking forward to when Stan is fully trained.
That's not how disk brakes work. This thread is an incredible archive of fundamental misunderstandings of brakes.
I'm not sure you're being as helpful as you think you are . . . .
