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gary tompkins
13-09-2005, 06:55 PM
Does anyone know the bore size of the later front brake master cylinder on twin disc set-ups?
A Yerbury
13-09-2005, 07:56 PM
http://www.pdq1.com/

click the online catalogue, then brakes, I think they are on there.
gary tompkins
13-09-2005, 10:26 PM
Twas a good link Alex, alas it only shows the race style radial master cylinders and not the standard brembo jobbies.

Anyone else? :confused:
Pedro
13-09-2005, 11:08 PM
GT

20mm rings a bell - hand on a mo, I'll get my book....

Ped
Pedro
13-09-2005, 11:13 PM
Nah, it's not listed, sorry.

Ped
gary tompkins
14-09-2005, 01:05 AM
Thanks for looking Ped - hopefully someone has the info?
Scotty
14-09-2005, 03:44 PM
just a quick glance at the yerbs surgestion ...

A 20 ratio lever will give less travel and be harder,
18 gives more travel & is easier to pull
16 is the easiest to pull and has the most feel & travel

makes it sound like 19 is standard , i guess your looking for more concrete evidence
gary tompkins
14-09-2005, 08:50 PM
Not looking to swap or up-grade Scotty, just needed to know standard m/cyl spec so i could match it. I've found out the last two digits of the number stamped near the lever clevis indicates bore size. Mine is stamped OG 22 16, so it looks like the piston is 16mm Dia.
Sparky
14-09-2005, 09:00 PM
My M1000ie 2003 service manual claims 16mm and mines stamped 16 so looks like your spot on.

Chris