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Mats · Post by **Mats** » Sat Oct 20, 2007 1:21 pm

Did a quick draft of an adapter plate. ~315 grams per side.

Made to have the ventilation inwards, otherwise the cold-air scoop might be difficult to mount. nice to have the wall to take up the tension from elongation due to heat though.

kevin · Post by **kevin** » Sat Oct 20, 2007 1:35 pm

Nice pics Mat. Made a whole lot of spaces to widen the rear calipers in anticipation of the sz discs arrriving so i will wait and see who makes up the first set at a reasonable cost.
Pete, going back a few posts on calipers. I will posts pics on the hardest way to do a big break conversion with 15 inch rims(and only a select few 15nch rims). I think keeping the 315mm disc size realy made it difficult and using calipers that have 'lugs' make it impossible unless you can laser cut the pieces. Check out pics.

kevin · Post by **kevin** » Sat Oct 20, 2007 1:37 pm

Mats what do you think of the shear on the bolts or the "meat' left on hub.

Mats · Post by **Mats** » Sat Oct 20, 2007 2:09 pm

What's that, M10? I'd be worried...

Barry · Post by **Barry** » Sat Oct 20, 2007 7:16 pm

Mats wrote:What's that, M10? I'd be worried...

Never! No problems here with m10..You will break your finger off in your ass before those m10 will shear!

MD · Post by MD » Sat Oct 20, 2007 10:51 pm

You will break your finger off in your ass before those m10 will shear!

Geez Baz, you sure got some strange ways of doing R& D for brakes down your way. I can see by the time Kevin sorts his brakes out, he wont be able to sit down for a week...

Adds a whole new discovery channel to pickin' your nose too I might say..

ALFA GTV6 GP · Post by **ALFA GTV6 GP** » Sun Oct 21, 2007 12:19 am

Not my choice of braking options....
But has been used sucessfully but two Alfisti in Oz.
The additional weight would suck.

Mats · Post by **Mats** » Sun Oct 21, 2007 2:11 am

Barry wrote:
Mats wrote:What's that, M10? I'd be worried...
Never! No problems here with m10..You will break your finger off in your ass before those m10 will shear!

The problem is that there is no way that the friction between the bracket and the spindle can take that kind of torque on a small PCD like that. The bolt will take a lot of that load in shear.
That's not the proper way to design it, but I guess you don't care until the bolt snap.

A friend of mine has broken off the whole mount on a stock caliper once, that was "interesting" I bet.

Giuliettaevo2 · Post by **Giuliettaevo2** » Sun Oct 21, 2007 10:22 am

the double caliper thing was original on the Giulietta Turbodelta... it uses very rare autodelta spindles and two calipers each side.

Don't know what they did with the mastercylinder to make it work properly.

Giuliettaevo2 · Post by **Giuliettaevo2** » Sun Oct 21, 2007 10:29 am

I used Volvo 240 calipers, they are 4 pots. with the Giulietta 1.6 Spindles and the hubs and discs off a 75 TS this is a bolt-on job. only trouble was the double brake hose connection on the caliper, fixed it with a t-connector and two pieces of brake line.

Also used a mastercylinder of some kind of Peugeot/ Citroen van which is 25.4 mm. was 118 Euros but has the connectors on the wrong side( near the engine) so i had to lengthen the brakelines.

they are on this car;
Giulietta 1.6 1982
2.0 TS engine and gearbox
yellow Koni's and lowered.
castor-rodends and 28mm stabilizer
16" Azev A 205-45-16 rear 195-45-16 front
CSC rear silencer, no middle silencer.
This is my daily driver...

Maurizio · Post by **Maurizio** » Sun Oct 21, 2007 11:25 pm

@Kevin,

gut feeling says, M10 and the large brakes is not strong enough.
Ps comment on the V shaped bracket, I would like to see material between the bolts. Even if it is 2mm material, it helps a lot.

The autodelta units... I've seen several pictures of broken uprights from those days...

@Mats, your fast

wilwood disk (29.6mm) is wider then an SZ disk.
An standard caliper which utilizes 29.6 mm will be difficult.
Handbrake hydraulic shouldn't be that difficult for the people who need it to be road legal. This is on my long upgrade list for the TS

+ Placing the calipers more into the wind. Here some pictures, stolen from a dutch transaxle forum, of a GTV6 GR.A preped by Imberti.
ps a nice detail, more room for the caliper (an "U" taken out of the dion).

kevin · Post by **kevin** » Sun Oct 21, 2007 11:57 pm

Thanks for replies. Also thought of welding around the sides of bracket but then you also weeken areas around weld.
The double caliper method was used very succesfully on out gtv3.0l for racing in the eighties and also currently with one of the chaps in my class. It alows for least wheel modifications on the 15''. Only thing is you need thicker disc to dissipitate the extra heat(spaces in caliper).
Dawie has an origional autodelta double caliper hub still.

Jarle · Post by **Jarle** » Sun Oct 28, 2007 12:34 pm

My budget brake solution for racecar: Wilwood superlites with GTA discs.

Post by **Zamani** » Sun Oct 28, 2007 4:55 pm

Jarle,

Which GTA discs? The 305mm or 330mm ?

Also the way the caliper is mounted is there full pad to disc contact?

Jarle · Post by **Jarle** » Mon Oct 29, 2007 7:59 am

Zamani

Its the 305 discs. They are heavy enough

. Full pad to disck contack..

Twin calipers