Page 17 of Formula Ford Parts by BAT Inc.

16 bat your headquarters for ff1600 ff2000 brake tech info most ff1600 and s2000 cars come equipped with either girling or lockheed ap racing brake components some cars such as the zink z10 use an ate brake caliper early ffs usually had either the small 528 girling 12sp caliper or the larger 533 14lf caliper the 12sp caliper is easily identified because it has only two bridge bolts which hold the caliper halves together the 14lf caliper uses four bridge bolts there are generally three types of lockheed calipers used the smallest caliper is generically called the ld19 type and is currently almost universal on formula fords and even some 2000 cars the bigger brother of this caliper or ld20 type is mostly found on 2000 cars and the newest caliper the four piston ld65 metro caliper is only found on 2000 cars master cylinders and calipers usually suffer more from sitting idle between race seasons than any other cause since competition brake fluid can readily absorb moisture from the atmosphere the biggest threat to a hydraulic system is corrosion of the pistons and calipers master or slave cylinders the corroded piston either sticks or scores the bore it rides in with obvious results the solution is to store your racer in a dry environment or exercise the hydraulics frequently during the off season we strongly advise against the use of silicone brake fluid on a race car there are two compelling reasons for this first silicone fluid has the unusual property of becoming slightly compressible at high temperatures this results in a spongy pedal at the worst possible time secondly silicone brake fluid there is a vast selection of brake pad compounds available for has the ability to creep under rubber seals the problem here all of these calipers to suit the requirements of various tracks is that brake caliper pistons depend on seal hysteresis or drag and drivers the one cardinal rule is to never never mix to retract the piston after a brake application since silicone different brake compounds front and rear on a race car we fluid creeps under the seal lip the piston just slides on the seal offer brake pads in a wide range of compounds and heat and does not retract properly the result is pad drag on the ranges from ferodo mintex and a number of carbon kevlar rotor use a good competition brake fluid like ap 550 which is and carbon metallic manufacturers with the decline of formulated for british brake systems and is ideal for ff1600 asbestos worldwide many of the familiar older racing compounds and 2000 cars are being replaced with new non-asbestos versions some of the earliest asbestos-free pads on the market were not very sometimes it is necessary to change the hydraulic ratio good obviously holdovers until better versions could be between master cylinder and caliper or slave cylinder to developed however the latest racing pad offerings by both achieve a different result increasing the master cylinder size mintex and ferodo are now very good mintex offers the will increase brake effort but reduce travel decreasing new 1144 non-asbestos material as a replacement for both master cylinder size will give less pedal effort and a longer 171 and 121 compounds offering very similar performance stroke this of course assumes that the caliper piston size is characteristics ferodo is now offering non-asbestos 3466f unchanged for example a car which ends up always having its and 4003f compounds that replace their popular 2430 and brake balance adjuster all the way to one side or another may ds11 compounds when selecting brake pads we benefit from a different master cylinder size the same rules recommend consulting our staff if you are unsure of your apply to a hydraulic clutch as well thus if a driver complains of too requirements much pedal travel to release the clutch a larger master cylinder master cylinders and brake calipers can be overhauled could be fitted but there will also be corresponding increase in using kits manufactured by either girling or lockheed and pedal effort.we highly recommend using -3 aeroquip brake new caliper pistons are now available in stainless steel to hoses and a large selection of specialized brake fittings is replace the original chrome plated pistons when available for british calipers and master cylinders laying out overhauling brake calipers it is strongly advised by the and fitting these systems is a very specialized matter and we recommend consulting our staff with your requirements manufacturers to not split the caliper apart brake compound info mintex m1144 replaces 171 is a non-asbestos resin bonded lowmetallic friction material utilizing a blend of specialized steel/acrylic fibres m1144 has a high coefficient of friction 44 throughout a wide operating temperature range up to 650c with excellent feedback pedal feel m1144 is factory burnished for easy break-in and minimal fade on the first heating cycle both fade and wear characteristics are excellent carbon kevlar pad material offers superior fade resistance and a high coefficient of friction 44 49 throughout a wide temperature range to 750c material is bonded to the backing plate with a ceramic insulator and pads come pre-burnished for ease of breakin pad material has excellent wear characteristics and is equally rotor friendly ferodo 3466f replaces 2430 utilizes a non-asbestos base of steel filaments dispersed randomly within a blend of selected modifying agents and a special impregnant 3466f has a high coefficient of friction 42 throughout its operating temperature range up to 500c wear characteristics for pads is very good with good feedback pedal feel ferodo 4003f replaces ds11 utilizes a non-asbestos blend of selected friction materials in a complex matrix consolidated with a specially developed impregnate 4003f has a high coefficient of friction 42 throughout its operating temperature range up to 750c 4003f is particularly suited to severe duty applications and is not physically damaged by moderate oil contamination both fade and wear characteristics are excellent bat inc phone 941 355-0005 fax 941 355-4683

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