Brakes, and how close is to close?

General General Lotus Talk
1

Well been fiddling and test fitting the new discs from Gav, to be fair he rang me and was quite worried the discs might be a problem. Anyway…

The problem here is thickness, they are 28mm thick and not 26.whatever mm of the originals, whilst they do all fit together there seems to be very little distance between the disc and the calliper width wise. the don’t touch but I reckon it is less than 0.5mm gap! How much will everything expand? Is this tolerance too small? Should I get out some feeler gauges to get an exact gap?

Ta

2

That’s a bit close, if you are talking about 0.5mm total. 0.5mm both sides, just about OK, but not ideal.

And you will need thinner pads from new as there will be too much material thickness.

Sell them to Graham quick and delete this thread!!! :wink:

3

Are there any other simple options? Bigger front callipers that fit easy and move my current 4 pots to the rear?
Might be an excessive way to make a cheap set of discs fit, but might also gives me better brakes?
I reckon there is only around 0.5mm total, I’ll break out the feller gauges to check

4

Cant you get 1/2mm taken off the disc?.

5

I could, but all that would do would reduce the life of the discs I would have thought?

6

Ha! Magpie. You just couldn’t help buying what was shiney
More sympathetically…get a pair of AP 5000s for the front. They’ll fit the discs and move the ap OEM 4 pots to the back with the 308 26mm

7

Yeah this, I’d not want to be running oversize disks in a caliper designed for 25.4 thickness. Shaving the disk would be pointless as they’re only rated to 0.5mm wear a side, so you’d have killed it’s life day 1.

AP 5000+ have anti knockback springs too, and as a plus you can wang the OE 4 pots out back and with this being slightly larger in terms of piston area than the 2 pots, you’ll still have some kinda sensible bias with the larger 5040s (152mm centers).

8

On the face of it you could do it as the 28mm thick AP discs have 2mm of overall wear on them rather than the 1mm of wear you see on the 25.4mm discs.

It was entirely my fault, Id completely forgot they were the thicker discs until the point I was wrapping them up to send them out and read the label on the box (derrrr…).

Ade was willing to offer them up simply because he has a set of the early Lotus big brake kit which uses a larger caliper and mounting bracket arrangement (and takes a thicker pad) than the later bolt straight on version of them.

Oh well nothing ventured nothing gained, spoke to Ade they are going on Ebay as I dont believe they are worth the messing with.

9

Yep that is where they are going, off to eBay, unless someone has the correct AP5000+ calipers I need?

10

I seem to remember randy had an adaptor made to use a brembo caliper

11

That is a level of effort I am not prepared to go to, they will be for sale next weekend.

12

fair play, let us know the ebay number when u post em up

13

will do, unless you want them? Going to have to be more than I paid to cover eBay and paypal fees :frowning:

14

Are these the discs in question?

If so, and if I’m not stepping on any toes, I’ll happily save you the bother of putting them on eBay Ade.

PM sent too

15

did these sell in the end Ade?