OEM AP rotors/alloy bells with princess calipers etc...

[keri]

I'm toying with the idea of doing rotors to replace the AP ones that were fitted on alloy bells on some late wedges....

I seem to remember people saying they were no longer available, and that by now most needed replacing!

Also if there are enough people with the princess caliper on 2.8i Granada discs I can probably sort out both a one and two-piece disc to sort the pad overhang issue. (like the AP/alloy bell solution does)

Let me know your thoughts, if no-one replies I'll know there's no demand and I won't worry!!! :-)

Keri - WMS

[keri]

Sorry dude! It's because I'll need a borrow of someone's old AP rotor, alloy bell and widely spaced princess caliper... I seem to remember the AP rotor were 28mm thick, the 2.8i based ones are 24mm thick.

I can possibly do the spacers and bolts etc to do kits to fit the princess caliper round the AP width discs, and the bells and rotors as well...

It just depends what people want!

[keri]

It's a bit of a chicken and egg situation this unfortunatly - I'm need to get my mits on some old discs / bells before I can make anything to work with them....

Does anyone have this setup on a project car that's currently in bits?

[keri]

Ah ha, do you think I could borrow your old ones? At least then I'd have the info I need to create more...

Does anyone have any photos of the bells? Specifically, do the rotors locate off their inside diameter (onto a protruding "lip" on the bell), or off the mounting bolts themselves as many seem to?

[Keri]

I'm in the process of doing a prototype brake upgrade for the AP 270mm rotor/alloy bell equiped cars (biiiig alloy CNC 4-pots to replace the dreaded princess anvils), having finally got hold of some 'SE OEM rotors/bells. However, while the rotors are in good nick, I suspect they have been machined as they are in fact 269.5mm x 26.7mm...

Has anyone got the AP part number / drawing / new AP rotors so I can get an exact-and-confirmed new thickness? They are referred to as being 270x28mm, but to get a perfect fit I could do with a few measured examples (via digital verniers idealy, +/- 0.1mm would be about right)

Cheers lads! :-)

Keri - WMS Brakes

[Keri]

Hi deetes, so are the 300mm rotors on yours (a) fitted directly to the TVR bells, (b) fitted to aftermarket bells or (c) one-peice brake discs?

My plan was to try and offer (for people with the OEM TVR bels fitted):

Step 1: WMS 4 pot calipers/brackets to fit as an optional upgrade
Step 2: 270mm straight replacement rotors
Step 3: 280/300(330mm even?) bigger rotors still to fit the TVR alloy bells, and WMS calipers/brackets to fit.

:-)

[Keri]

With this particular idea I was going to enable people to re-use their existing alloy bells for the originality factor, I don't have a cost for WMS bells as they are so deep... (lots of material milled and thrown away)

We'll be looking at a few variations on the theme, just seemed that the 270mm stuff was a good starting point due to the weight of the Princess calipers!

[Keri]

djc1001 said:

I've been considering the 295mm option that seems OK for 15in wheels - 300mm is very tight for 15s

It really depends on the wheel. Some motorsport alloys take 300mm, even 310mm, but most will only take 280mm leaving a 2-4mm radial clearance.

[Keri]

redwedge5 said:

I've got one unused AP rotor. I don't have any digital verniers, but using a spring calliper and a ruler it does come out at 28mm thick and 270mm in diameter.

Cheers! Does your one have any part numbers so AP know what I'm talking about?

I had a chance to look at my stuff the other day and the rotor is actually 27.7mm x 269.5mm (not the 26.6ish I remembered), so I'm happy that they should be 28.0mm x 270.0mm and mine have had a light skim. They might originally have been intended to be 1.1" thick in actual fact as that's 27.94mm, but there's not a lot in it!!

Here's some eye candy:

[Keri]

redwedge5 said:

Is there anything else I need to do to get a complimentary set of brakes

Great stuff, thanks! Fingers crossed that'll help unearth the original drawings etc.

Um, free brakes eh...er...

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(...future discount? )

Edited by Keri on Sunday 4th May 23:46

[Keri]

rev-erend said:

Any plans for a more solid design or even 1 piece calipers.

Hi, they do look a little odd but it's a tried and tested design - used in NASCAR etc! The bridge parts are stainless steel, which is why they can be made thinner while retaining their stiffness. This all helps the cooling, resulting in increased resistance to boiled fluid etc.

There are bigger calipers still in the pipe-line, including a 6-pot, but there's no plan to use them on the Wedges....(yet!)