AP Racing Catalogue Issue 4

78 visit www.apracing.com for installation drawings & up to date product range details PEDAL BOXES - Underslung - CP5517 Type and BALANCE BARS This unique pull type bulkhead mount design, with master cylinders being located in the engine or front compartments, allows the pushrod to remain in line, eliminating all side loads, making it one of the most efficient pedal box on the market. It’s lightweight aluminium base, and ergonomic steel and alloy pedals, offer the user the ultimate control in this critical area. PART NUMBERS ◘ Brake and clutch assembly - CP5517-1 ◘ Download latest issue installation drawing from : www.apracing.com FEATURES ◘ Lightweight aluminium base, machined from high quality casting. ◘ Fabricated steel brake pedal. ◘ Machined aluminium alloy clutch and throttle pedals. ◘ Designed for use with master cylinder - CP6465 see page 67. ◘ Bellows to seal the firewall, made from fire retardant material. ◘ Adjustable foot pads for extra driver comfort. ◘ Adjustable pedal stops. ◘ Brake and clutch pedal ratio 4.8:1 ◘ Adjuster cable CP2905-18 included with assembly. CP5517 - Underslung Bulkhead Pull Type INTRODUCTION AP Racing Balance Bar Assemblies are designed to offer the user improved levels of efficiency and control. The range consists of three families CP5500, CP5507 & CP5520. AP Racing also offers a choice of cable adjusters, information can be found on page 79. CP5500-9 & CP5500-9UNF / STANDARD DUTY A lightweight and durable conven- tional Balance Bar manufactured froma high grade alloy steel, treated with a low friction coating for extra smoothness of adjustment. It incorporates a spherical bearing for improved efficiency, an outer tube to ease installation and rubber boots to prevent ingress of dirt & grit. Not suitable for heavy duty applications or high pedal ratios.Asimilar assembly is also available without the rubber boot CP5500-4. NB. Select CP5500-9 for use with M8 Master Cylinder pushrods & CP5500-9UNF for use with 5/16”UNF Master Cylinder pushrods. NOTE: For the latest Installation drawing and advice for installation of sleeve and balance bar visit our website: www.apracing.com CP5507-2 / HEAVY DUTY Similar in concept to CP5500-9, but with a heavy duty 12mm balance bar for applications where a high pedal ratio and / or heavy pedal loads are used. Features include low friction coatings, spherical bearing and rubber boots to prevent dirt ingress. NB. Suitable for use with 5/16”UNF Master Cylinder pushrods Note: CP5500-9 & CP5507-2. If used with conventional master cylinders with articulated push rods e.g. CP2623, CP4623 etc, the push rod angularity must be limited to 4° from straight to avoid unacceptable side loads on the pistons. NOTE: For the latest Installation drawing and advice for installation of sleeve and balance bar visit our website: www.apracing.com A A FIGURE 3: MAIN DIMENSIONS MAXIMUM ARTICULATION +/-20° IN CASE OF ONE CIRCUIT FAILURE, MAXIMUM TRAVEL BEFORE BRAKING IS 6.55MM ON BALANCE BAR 20.0 Ø32.15 Ø32.10 Ø3.1 THRO’ 16.0 A-A FIGURE 2: RECOMMENDED HOUSING DIMENSIONS 115.0 131.0 89.8 62.0 36.0 35.0 B B 40.0 25.4 24.0 M8x1.25 THREADED LENGTH FOR PUSHRODS Ø23.017 23.004 O/D BEARING Ø32.06 31.99 O/D SLEEVE B-B Ø4.0 HOLE FOR CABLE ADJUSTER. CP2905-18. 0.5 MINIMUM CLEARANCE BETWEEN CLEVIS AND WASHER 0.5 MINIMUM CLEARANCE BETWEEN CLEVIS AND WASHER 0.5 MINIMUM CLEARANCE BETWEEN CLEVIS AND WASHER 35.00 38.50 66.60 91.60 117.00 25.00 8.00 49.00 2.00 26.00 8.00 8.00 38.00 30.00 A A 33.40 O/D OF HOUSING 15.00 23.00 THREAD LENGTH 5/16”x24UNF THREAD A-A Ø12.00 Ø10.00 Ø4.00 FOR CABLE ADJUSTER AP RACING CABLE ADJUSTER CP2905-18 AND STEPPER MOTOR KIT CP5500-14 AVAILABLE ON REQUEST 96.50 15.00 2.00 56.00 M12x1.0 THREAD 1 TURN= 1.0MM OF BEARING MOVEMENT