Dougle_turbo Posted May 11, 2020 Author Share Posted May 11, 2020 1 minute ago, pstarkey said: I use this kit from Freaky Parks done 12 track days with CL5+ pads and a marked improvement over standard, kit comes with larger disks. They look great! Someone had drawn my attention to some negative posts about these on Boxa.net. The poster was unhappy because the pad on the inside of the caliper wasn't making 100 percent contact with the disk (see picture) and therefore braking efficiency was actually reduced. Have you noticed the same? Link to comment Share on other sites More sharing options...
pstarkey Posted May 11, 2020 Share Posted May 11, 2020 (edited) 5 hours ago, Dougle_turbo said: They look great! Someone had drawn my attention to some negative posts about these on Boxa.net. The poster was unhappy because the pad on the inside of the caliper wasn't making 100 percent contact with the disk (see picture) and therefore braking efficiency was actually reduced. Have you noticed the same? Yes I know exactly what they mean, noticed it when i tried to take the pads out and there is a ridge of unworn pad material on the inside of the inside pad. Not sure if the Porsche discs will be better so will check when i need to replace them. I don't think braking was reduced though, would overall say better, but I did fit the pads at the same time. Probably more cosmetic, but i did not like the multi fit/holed disks always looked a bit odd although in reality I expect no impact on performance. Edited May 11, 2020 by pstarkey Link to comment Share on other sites More sharing options...
Windymiller Posted May 25, 2020 Share Posted May 25, 2020 (edited) To ask an obvious question - what is the benefit of a bigger disc, if your caliper and thus pads remain the same size? arent you just still applying The same Amount of friction material (ie, pad) surface area to the same contact surface area on the disc? 🤔 is the bigger disc benefit from simply having more material for heat transfer from The braking? if I could only remember my mech’ engineering learnings from 30 years ago I’d be able to work out if applying a clamping force to a rotating mass further out on the radius from its centre afforded greater stopping force.... 🤔 what have You decided to go for in the end? have you upgraded the master cylinder too Doug? Edited May 25, 2020 by Windymiller Link to comment Share on other sites More sharing options...
Andrea Posted May 25, 2020 Share Posted May 25, 2020 50 minutes ago, Windymiller said: To ask an obvious question - what is the benefit of a bigger disc, if your caliper and thus pads remain the same size? arent you just still applying The same Amount of friction material (ie, pad) surface area to the same contact surface area on the disc? 🤔 is the bigger disc benefit from simply having more material for heat transfer from The braking? if I could only remember my mech’ engineering learnings from 30 years ago I’d be able to work out if applying a clamping force to a rotating mass further out on the radius from its centre afforded greater stopping force.... 🤔 what have You decided to go for in the end? have you upgraded the master cylinder too Doug? Mainly leverage. Have you ever tried closing a door pushing with your finger near the hinges? Move the finger further away and it gets simpler..... More surfaces also means more heat dissipation..... Link to comment Share on other sites More sharing options...
Windymiller Posted May 26, 2020 Share Posted May 26, 2020 20 hours ago, Andrea said: Mainly leverage. Have you ever tried closing a door pushing with your finger near the hinges? Move the finger further away and it gets simpler..... More surfaces also means more heat dissipation..... Ah-ha, I knew there would be an obvious explanation, thanks Andrea 👍🏻 1 Link to comment Share on other sites More sharing options...
crafty1 Posted June 17, 2020 Share Posted June 17, 2020 Just circling back on this topic as my discs also need replacing as now have small cracks appearing between the holes, these were Brembo OE discs which I replaced these about 3 years ago and have done about 12,000 miles and this includes I think 6 track days. Each time I have swapped in and out Pagid RS29 with titanium heat shields for the track and then back to Textar for the road, so they have had quite a hard life and the rears are now blue.. Annoyingly there is plenty of meat left on the discs but are cracked so must go. After much searching around I've gone back to the Brembo OE disks as they are a known quantity, on Ebay Eurocarparts sell all 4 Brembo discs using the voucher code for £162 delivered! Also found a full set of Textar pads front and rear for £57. 1 Link to comment Share on other sites More sharing options...
Dougle_turbo Posted September 7, 2020 Author Share Posted September 7, 2020 I've ended up sticking with the Sebros up front, and have just fitted a new set. They are very reasonably priced on Design 911. Link to comment Share on other sites More sharing options...
SarlechS Posted September 21, 2020 Share Posted September 21, 2020 I've only ever done Sebro discs / Textar pads combo myself too Got mine from CarParts4Less (ECP's E-commerce side) - they had a 30% promotional discount on - £360 Delivered (F and R) never had any problems with warping etc... Link to comment Share on other sites More sharing options...
Andyoz Posted February 17, 2022 Share Posted February 17, 2022 Excellent resource of info here lads. Anyone here actually running AP brakes? Link to comment Share on other sites More sharing options...
wtaite01 Posted March 10, 2022 Share Posted March 10, 2022 Wanted to add these to the list, look interesting and I'm tempted when it comes time to replace my rotors:https://dbabrakes.co.uk/discbrakes/21756/DBA-42394S Same disc on ebay:https://www.ebay.co.uk/itm/275141768595?_trkparms=amclksrc%3DITM%26aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20180105095853%26meid%3D184f4be8c736423fa680abe018099a45%26pid%3D100903%26rk%3D1%26rkt%3D20%26sd%3D275141768595%26itm%3D275141768595%26pmt%3D0%26noa%3D1%26pg%3D2510209%26brand%3DDisc+Brakes+Australia&_trksid=p2510209.c100903.m5276 Any experiences? They have a rear disc version too. Link to comment Share on other sites More sharing options...
Lennym1984 Posted March 11, 2022 Share Posted March 11, 2022 I recommend the Mtec discs. You can have them grooved, dimpled drilled, hooked etc and they seem to do the job very well. I have Mtec discs and performance friction pads on my 2.7 (smaller discs) and the stopping power on dry roads with warm tyres is almost uncomfortable. Yet to try them on track but I have Thruxton at the end of the month so can give an opinion then Link to comment Share on other sites More sharing options...
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