Shaved Callipers

It'll never go away this one ,its even more fun than Dellorto pumpers or not (I say not)

yes the pistons are of unequal size, but there is a stainless retaining plate above the pads which has a directional arrow on it, and this is reversable, of course there is an engineering reason for the pistons being a differring size to each other, but when you see six piston calipers (ie much longer pads) they are always the same size piston, I have worn out two sets of pad and it is not possible to see with the naked eye if they wear unevanly.The whole point is that no matter which pistoin moves first they none of them do diddly squat untill there is pressure in the fluid,as contact is made, and all surface of all pistons and all pads are square, and barely kissing the rotor, that is when youi build fluid pressure with the handlbar lever, anyway i might reverse them at some point and see what it rides like.
CLEM

PS Grant, I was not pointing out that the V6 had calipers of the 4 piston variety (it doesnt) I was pointing out that its heavier (than mine) calipers are mounted in front of the forks.
 
As I said, 2 piston calipers ahead of the forks is not an issue.
Brembo made these pistons different sizes for an engineering reason. I'm not going to argue with their logic.
 
CLEMTOG said:
It'll never go away this one ,its even more fun than Dellorto pumpers or not (I say not)

yes the pistons are of unequal size, but there is a stainless retaining plate above the pads which has a directional arrow on it, and this is reversable, of course there is an engineering reason for the pistons being a differring size to each other, but when you see six piston calipers (ie much longer pads) they are always the same size piston, I have worn out two sets of pad and it is not possible to see with the naked eye if they wear unevanly.The whole point is that no matter which pistoin moves first they none of them do diddly squat untill there is pressure in the fluid,as contact is made, and all surface of all pistons and all pads are square, and barely kissing the rotor, that is when youi build fluid pressure with the handlbar lever, anyway i might reverse them at some point and see what it rides like.
CLEM

PS Grant, I was not pointing out that the V6 had calipers of the 4 piston variety (it doesnt) I was pointing out that its heavier (than mine) calipers are mounted in front of the forks.
Click to expand...


There is one of these on the top of your pistons and your tyres they are also reversable, it is put there for a good reason...


  Keith
 
I presume the different size pistons in multi pot calipers are to aid brake modulation. It's  desirable to have the front leading edge of a pad deployed against the disc very slightly in advance of the trailing edge - toe-in if you will. This prevents chatter and squeal. Perhaps multi piston set ups provide this which is why they are directional.
Obviously on a single pot set up it will make bugger all difference.

Brakes are a very personal thing. A mate of mine had what I considered to be a most evil front brake set up on his Laverda. He was running a mismatched master cylinder and when you put the brake on it felt as if someone had just rammed a big stick into the front wheel. No feel or modulation whatsoever. He absolutely loved it and it didn't seem to affect his ability to ride well. To me it was an accident waiting to happen, especially in wet weather. Each to his own, if something works for you, it works.
 
If you reverse the forks Clem, you'll probably notice bugger-all difference. Yes, they'll be working as intended and may wear more evenly when pushed to the limit. But for general road riding, you won't be anywhere near the maximum performance of the brakes.

The reason 6 pot calipers don't have the different sized pistons is because the pads are much longer and the tilting effect (or tucking in of leading edge) due to rotor drag is reduced.
 
Dellortoman said:
If you reverse the forks Clem, you'll probably notice bugger-all difference.
Click to expand...
yes,  bugger-all noticeable with the braking.
but Cam old matey,,  i wasn't talking about the braking eh.   

Mark
 
Dellortoman said:
I quite agree Mark. I reckon they look crap too. But there's no convincing Clem of that. That man has no sense of aesthetics  ;)
Click to expand...
Cam,,  this is what I was referring to.  !!   not the farken  looks,  which is, yes, also faarked.
markQLD said:
, and you would get more of an improvement.  something to do with reducing the radius of gyration about the steering axis and moment of inertia stuff.
Click to expand...

it's gotta be farken spelt out real farken clearly around here eh !!   :-*
 
You must log in or register to reply here.
Back
Top