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disc brake upgrade

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Blue65 Officially Full-On Dubber

298 posts · joined Sep 2002 ·

#937103
vw54 wrote:
I was thinking of putting discs on the front and just want to know what else I needed.
replace the master cycliner with a ATE dual circuit and replace all 4 rubber flex hoses

then fit a VVDS wide 5 set up
I've got a vintage 60s Beetle and have been interested in replacing the drum brakes for awhile. But I'm living in Melbourne - does anyone know of a reliable mechanic who can do this conversion properly?
______________________
Owner of a 1964 VW Beetle, 1641cc engine, etc..

lovinbronx Seriously Crusin Dubber

129 posts · joined Oct 2012 ·

#937169
Hi blue65

I use in the northern burbs of Thomastown Volkscourt telephone 9465 3357. Wolfgang is happy to work with supplied parts and will provide great service/ price. I am looking to do the same conversion on my beetle.

Anyone have suggestions where the cheapest supplier of the master cylinder is?

Cheers Daniel

psimitar Son of Jim - Creator of Good

2,506 posts · joined Jan 2009 ·

#937230
Purple Martin wrote:You must change the master to the dual-circuit kind because:

- Drum brakes have small slave cylinders (the ones at the wheel with the adjusting stars) which only need a small volume of fluid to operate them.
- Disk brakes have big slave cylinders (to push the calipers) which need a larger volume of fluid to operate them.

The older single-circuit master only moves a small volume of fluid (fine for drums) and the newer dual-circuit master moves a larger volume of fluid (necessary for disks).

Fortunately, changing the master is an easy job. If you need a new hard line or two you can get them made for you cheaply at most good brake workshops.

Also change the fluid reservoir (hiding behind the spare wheel) to the dual-circuit kind with two halves and two hoses running from the reservoir to the new dual-circuit master.
Some truth in that but in reality the disc caliper sits the pads far closer to the disc than wheel cyl does the shoes and the stroke of the MC can easily handle both setups. Main thing is the single holds residual pressure for the drums but this will keep small pressure in a disc setup and cause the disc to overheat from constant pad contact.
madness is in the eye of the beholder 👍

mactaylor Custom Title Time!

1,005 posts · joined Aug 2007 ·

#937232
just rememberd that bob mowbray makes a 5 on 205 hub that looks the goods. all alloy with bolt on disc. have a look for hunter rivmaster.
EVERLAST CONCRETE TANKS
1800 552 123

vwo60 Veteran Volks Folk

2,036 posts · joined Feb 2007 ·

#937237
Some front disc set ups require a 2LB residual valve to hold the pads closer to the disc, i am in the process of fitting them to mine as the seals have not let go of the piston and pull the pads back, resalting in a soft pedal, that why they are available from wilwood and other after market manufacturer's, 2LB for disc's and 10LB for drums.

psimitar Son of Jim - Creator of Good

2,506 posts · joined Jan 2009 ·

#937277
mactaylor wrote:just rememberd that bob mowbray makes a 5 on 205 hub that looks the goods. all alloy with bolt on disc. have a look for hunter rivmaster.
Aye, not bad. Just had a look. Will have to ask him for a few dimension to see if a vented disc can be mounted to them. All ali one piece should keep the engineer happy 🙂
madness is in the eye of the beholder 👍

mactaylor Custom Title Time!

1,005 posts · joined Aug 2007 ·

#938234
psimitar wrote:
mactaylor wrote:just rememberd that bob mowbray makes a 5 on 205 hub that looks the goods. all alloy with bolt on disc. have a look for hunter rivmaster.
Aye, not bad. Just had a look. Will have to ask him for a few dimension to see if a vented disc can be mounted to them. All ali one piece should keep the engineer happy 🙂
howd ya go with bob?
EVERLAST CONCRETE TANKS
1800 552 123

psimitar Son of Jim - Creator of Good

2,506 posts · joined Jan 2009 ·

#938296
mactaylor wrote:
psimitar wrote:
mactaylor wrote:just rememberd that bob mowbray makes a 5 on 205 hub that looks the goods. all alloy with bolt on disc. have a look for hunter rivmaster.
Aye, not bad. Just had a look. Will have to ask him for a few dimension to see if a vented disc can be mounted to them. All ali one piece should keep the engineer happy 🙂
howd ya go with bob?
Been a bit busy and forgetful since then. Will ask him tomoro 🙂
madness is in the eye of the beholder 👍