View Full Version : SWAP: 19x20mm Brembo Master Cylinder for 19x18?
Just got a pair of brand new Brembo master cylinders off flea bay, but the brake is 19x20mm, and I wanted 19x18mm.
Anyone have one lying about they would swap?
i will swap with you.
as long as its mint.
send me a E-mail or U2U and we can sort it out.
K
Mate, the cylinders are the same!!!!! its the lever thats different!!! You just buy a different lever! £35 at GPR Silverstone.:D
Originally posted by andyb
Mate, the cylinders are the same!!!!! its the lever thats different!!! You just buy a different lever! £35 at GPR Silverstone.:D
not according to those in the know.
you can get different lever lengths.
but 19x16, 19x18 and 19x20 are different units
Originally posted by khu996
Just got a pair of brand new Brembo master cylinders off flea bay, but the brake is 19x20mm, and I wanted 19x18mm.
Anyone have one lying about they would swap?
My response it to the original question. If he buys a 18 ratio lever he will achieve a 19x18 cylinder.
Its not about lever5 lengths its about the ratio, ie the pivot point, meaning what you get out from what you put in!
Whos in the know then? ring GPR, brembo dealers, and ask...........
Shazaam!
10-Feb-2006, 18:13
18 is the fulcrum-to-piston distance in mm, not the overall length of the lever.
A fulcrum-to-piston distance affects two things: the amount of force needed at the lever, and the distance that the lever needs to be pulled through (to displace and compress the same amount of hydraulic fluid which in turns forces the caliper pistons against the rotor discs) to yield the SAME stopping power.
http://ducatisportingclub.com/xmb/viewthread.php?tid=17367&page=#pid155760
antonye
10-Feb-2006, 18:17
You can get spares here:
http://www.redracingparts.com/english/motorbikesmotorcycles/productsandcomponents/brembofrontbrakesmastercylinderspumps.htm
Originally posted by Shazaam!
18 is the fulcrum-to-piston distance in mm, not the overall length of the lever.
A fulcrum-to-piston distance affects two things: the amount of force needed at the lever, and the distance that the lever needs to be pulled through (to displace and compress the same amount of hydraulic fluid which in turns forces the caliper pistons against the rotor discs) to yield the SAME stopping power.
http://ducatisportingclub.com/xmb/viewthread.php?tid=17367&page=#pid155760
I thank you..................:D
The castings are different. You can't just put a "18" lever on a "20" MC. Well, I suppose you could, but I wouldn't.:D
I still fail to understand how you can change something that is stamped with 19x20 to 19x18 by just changing the leaver, and the prices for those two items are different
its the pivot or fulcrum-to-piston distance that's different on each item.
so as I thought you cant change it by putting a different leaver in ? no ?
So, the 19x20 gives you the most lever travel for the same braking forces? I guess more feel then?
No, TP, it's the other way around. Go back and read Shazaam's post!
Originally posted by Felix
No, TP, it's the other way around. Go back and read Shazaam's post!
:D Cool, thanks Felix.
NEW BREMBO RACING LEVER AVAILABLE
10 March 2005 - Grand Prix Racewear
NEW BREMBO 20 RATIO SHORT LEVER and NEW BREMBO FLIP UP LEVERS
Grand Prix Racewear now have in stock the new Brembo Racing 20 ratio short lever to fit all Brembo Racing radial brake and clutch cylinders. Previously only the 20 ratio standard length long lever was available.
Part number 10.7264.31. RRP £53.72 +vat
Also new this year is Brembo’s first ever flip lever, which will be available in 16, 18 and 20 ratio’s. These are standard long length levers. The will be available in May so please place orders quoting these part numbers.
Guys, you've got me well confused :o
Why is there the need for the 19x20 stamp on the body of the cylinder, if the all the 19mm cylinders are the same?
I have read Shazaam's post, and it seems to make sense, but why the difference of opinion on here then?
Originally posted by khu996
Guys, you've got me well confused :o
Why is there the need for the 19x20 stamp on the body of the cylinder, if the all the 19mm cylinders are the same?
I have read Shazaam's post, and it seems to make sense, but why the difference of opinion on here then?
Best thing is to ring GPR direct in the morning mate, tell them what you have and ask if you can swap a lever???
http://www.gprdirect.com/epages/GPRDirect.storefront/43ece4f200a9ddf0271bd9c7b805071b/Catalog/1004/1
no great confusion
only Andy who has a different opinion.
give them a bell though. and after that I'm still up for the swap as mentioned above. cheers K
Cheers Andy, will give 'em a ring tomorrow.
It would make more sense to numpties like me for Brembo to advertise them as 19mm cylinders with a choice of levers?!?!
And there was me thinking I needed a whole new master cylinder!
Keefer, the difference in opinion between you and Andy is still confusing me :puzzled::o
But I'll try and clarify things tomorrow. Either way, I'll let you know.
Let us ALL know please :D
Called GPR, they were too busy, promised to ring me back, but they didn't and now they're closed.
Anyway, rang ever faithfull JHP, who confirmed that the master cylinder bodies are the same, its only the levers that are different.
Hats off to Andy the techie genius! Looks like I won't be needing a new cylinder after all! :D
Originally posted by keefer
http://www.gprdirect.com/epages/GPRDirect.storefront/43ece4f200a9ddf0271bd9c7b805071b/Catalog/1004/1
no great confusion
only Andy who has a different opinion.
give them a bell though. and after that I'm still up for the swap as mentioned above. cheers K
No confusion now then???:D
Shazaam!
11-Feb-2006, 21:55
Originally posted by khu996
Anyway, rang ever faithfull JHP, who confirmed that the master cylinder bodies are the same, its only the levers that are different.
The master cylinder body establishes the distance between the piston axis and the lever pivot point, so the 19x18 and 19x20 bodies are different by 2mm.
Amazing the amount disinformation floating around...
As I said above the levers are NOT interchangeable. Yes, they'll fit but you'll seriously risk the malfunction of the master cylinder. As Shazaam says the distance is different between the two and that's why Brembo stamps them differently. Do you really think that Brembo would produce different levers if they were interchangeable? Just to be sure, I measured both a 19x20 and a 19x18 just now and it confirmed that they are different.
[Edited on 11-2-2006 by Felix]
Originally posted by Shazaam!
Originally posted by khu996
Anyway, rang ever faithfull JHP, who confirmed that the master cylinder bodies are the same, its only the levers that are different.
The master cylinder body establishes the distance between the piston axis and the lever pivot point, so the 19x18 and 19x20 bodies are different by 2mm.
OOOooooooooooooooooh a conflict of Guru's.............
So are you saying all brembo levers are the same? and its by putting them on to a 19x 20 or 19 x 18 body is where you get the ratio difference?
Originally posted by Felix
Amazing the amount disinformation floating around...
As I said above the levers are NOT interchangeable. Yes, they'll fit but you'll seriously risk the malfunction of the master cylinder. As Shazaam says the distance is different between the two and that's why Brembo stamps them differently. Do you really think that Brembo would produce different levers if they were interchangeable? Just to be sure, I measured both a 19x20 and a 19x18 just now and it confirmed that they are different.
Arghhh...I can't believe this! More confusion...my head is going to explode!
Felix, what did you measure on the cylinders to confirm they were different?
And(y), why did JHP tell me the cylinders were the same? :puzzled::flame:
[i] why did JHP tell me the cylinders were the same? :puzzled::flame:
Depends who you spoke to, the tea boy of the race Tech :P I suppose.
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