fogey
Posted a lot
Posts: 1,593
|
|
Jan 31, 2009 18:33:03 GMT
|
|
Hi all.
Want to convert my single line braking system to a dual circuit system. Idea is to run two lines from a tandem master cylinder with each line going to a seperate servo - one for the front (discs), one for the back (drums). I think the Elan +2 had a similar system ?
Any thoughts?
Cheers, Fogey
|
| |
Last Edit: Jan 31, 2009 18:33:55 GMT by fogey
|
|
|
|
|
Jan 31, 2009 18:46:02 GMT
|
|
any reason you cant use a standard dual circuit system from another car? likely to take up less room and be easier to get spares for.
|
| |
Volvo back as my main squeeze, more boost and some interior goodies on the way.
|
|
fogey
Posted a lot
Posts: 1,593
|
|
Jan 31, 2009 19:19:09 GMT
|
Could - but I already have two identical servos to hand and lots of copper pipe  |
| |
|
|
purplevanman
Posted a lot
Way too orangey for crows
Posts: 3,829
|
|
Jan 31, 2009 19:30:44 GMT
|
|
sound like you are making it hard?
my +2 only 1 servo, from a P6 i think.
What are your servos?
|
| |
|
|
|
|
|
Jan 31, 2009 19:34:38 GMT
|
twin remotes? far more hassle than its worth IMO. I switched the 2002 back to single remote when I swapped on single line front calipers. twin remotes lose feel and are a sod to bleed. it was standard prcatice for BMWs from the seventies to use them, they ran a dual line M/C into two servos and then split off two lines on one to the each front caliper and on the other it had two to the front again (two lines for each four piston caliper and giving split twin line system) and then one line to the back. nice and complicated. I use the twin line master cylinder and tee it into one line going in to the servo and then use the three way banjo to direct fluid left right and rear. it works brilliant! and I have had comments from 2 pro test drivers about how good they thought the brakes were. only my opinion and I'm sure someone has made a setup work great but that person wasn't BMW  |
| |
|
|
fogey
Posted a lot
Posts: 1,593
|
|
Jan 31, 2009 19:37:44 GMT
|
|
Both Lockheed units from early '60s Rootes application (Sceptre).
My reasons for doing it this way are as follows: There's not room for a combined master cylinder / servo unit in the engine bay so servo(s) have to be remoteley mounted elsewhere in the bay. By using two servos fed from a tandem master cylinder I have two completely seperate braking circuits. Using just the one servo fed from the original master cylinder and then splitting the circuits means that I still have just a single line between the master and servo, which is what I want to avoid.
|
| |
Last Edit: Jan 31, 2009 19:38:16 GMT by fogey
|
|
|
|
|
Jan 31, 2009 19:50:07 GMT
|
I see your point, but I wouldn't go back to twin servo's. its a dire system IMO just to be "safe" having twin lines. I know it can let go, but we can get over paranoid. why not put a linkage top position a direct servo and master cylinder elsewher in the engine bay? much better idea. like an e30 bmw uses two bell cranks to place the servo/MC where it would be in LHD built car or an RHD e21 uses a long stalk and crank setup to position the servo by the front panel yet is still direct? e21 setup-  rob0r's pic and car. |
| |
|
|
CIH
Posted a lot
Posts: 1,466
|
|
Jan 31, 2009 20:33:19 GMT
|
|
Remote servo and mastercylinder in the boot. One of the Irish manta guys did it when he v8'd a Manta A.
|
| |
|
|
|
|
|
Jan 31, 2009 21:23:16 GMT
|
mastercylinder in the boot Eh??? how was it connected to the brake pedal??? |
| |
... the only injury I sustained was a bumped head when I let the seatbelt of without realizing the car was upside down  and that's not really the car's fault. |
|
and that's not really the car's fault.