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D2 - Axles, Brakes, Suspension and Steering Brakes, Springs, shocks, steering racks, steering columns, suspension arms, wheel hubs etc. |
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#21
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Did anything ever pan out for the brake block? Am interested in buying one if I can find one.
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Audi S8 D2 2002 88k mls Ebony pearl effect black. Grey interior. |
#22
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I stopped development of the 3d printed one as the brakes on my S8 are so terrible anyway it makes no measurable difference. I may have another look at it over the winter when mine comes in for some updates. I have found a local company who do short-run CNC work so if I can print a working prototype there is an option to get a batch made in aluminium.
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#23
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Why are the S8 brakes so poor? My car has new or refurbished calipers, decent discs and newish pads. They have been pressure bled a number of times. But they still feel soft and unconvincing. Are there any pads or disc & pad combinations that might improve this?
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim. Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!). |
#24
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There are three problems I think.
#1 is that the calipers are just a poor design and introduce a lot of friction between the caliper and the pad, which then needs more pedal pressure to generate a decent amount of friction between pad and disc. Big Red's brakes (standard 2-piston sliding calipers) are better than any of my S8s. The solution to this is different calipers. B7 RS4 calipers work well, but are excessively expensive, as are the discs. Aftermarket calipers can also work well, but again can be very expensive. Tbh there's not really a cheap solution to this which I have found yet, although I keep looking. #2 is the ESP return pump which is fiendishly difficult to bleed properly and so makes it likely there is air in the system despite best efforts to the contrary. The only solution to this is to never let the system run dry, and to change the brake fluid regularly. #3 is the flexible bulkhead which is the root of this thread. Some of the pedal effort goes in to moving the sheet metal rather than pushing hydraulic fluid to the calipers, which reduces efficiency and pedal feel. My A6 has better brakes than any stock D2 because the pedal cluster is totally solid. Some kind of bracing is in order, hence the block between the master cylinder and the strut brace |
#25
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Every little helps so if you or anyone persues this I'd like one please.
If anyone has a template / drawing I'd be happy to talk to some local engineering firms, see if they can help at all.
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Audi S8 D2 2002 88k mls Ebony pearl effect black. Grey interior. |
#26
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Count me in for a brake block too, please!
My D2 brakes are always kept in good order but definitely feel a bit off after driving the D3 during the week.
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2000 FL A8 3.7 QS - Turned 21 years old on 15th March 2021. Ming Blue - 175k miles. I love having a 90's car worthy of 90L of 98 RON! If only they still did 4* fully leaded! 2009 A8 4.2 FSi LWB - Marine Blue - 164k miles. Extras? Too many to list. But I do like the Rear Seat Entertainment . . . . . . 477k miles to the moon and back. 238k to go and between them they'll have made it! |
#27
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friend has just 3d printed me one which I'm trialling at the moment
trying to talk him into a batch what do people think is a good price? |
#28
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Have you noticed an improvement? What is it printed from?
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#29
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Well done for taking this up but we would need more details before we can even think of putting a price on something. Its probably better if you and your friend decide the price based on your costs etc. No point in us just throwing out random numbers.
Keep us informed as to how you testing goes. Cheers Frank
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Audi S8 D2 2002 88k mls Ebony pearl effect black. Grey interior. |
#30
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Quote:
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-Andrew 1967 Bus 1980 Rabbit Pickup 1992 Corrado 2001 S8 2010 Jetta TDI Cup Edition |
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