{"product_id":"curtis-pb8-pedal-box","title":"PB8 Pedal Box - 3 Wire Curtis Clone PB8 pedal box.","description":"\u003ch1\u003ePB8 Pedal Box - 3 Wire Curtis Clone PB8 pedal box.\u003c\/h1\u003e\n\u003cp\u003eMostly used for Navitas AC conversion on older Club Car Series carts, resistor carts and Marathons.\u003c\/p\u003e\n\u003cp\u003eHas 2 wire activation switch and 3 wire potentiometer for throttle voltage. \u003c\/p\u003e\n\u003ch3 class=\"PDq2pG_selectionAnchorContainer\"\u003eWhat the Curtis PB8 is\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eCurtis PB8 Pedal Box (Potbox)\u003c\/strong\u003e is an electromechanical throttle-input assembly used in golf carts and other low-speed electric vehicles.\u003c\/p\u003e\n\u003cp\u003eThe unit is an interface between the accelerator pedal and the vehicle's motor controller. When the driver presses the accelerator, the PB8 converts the mechanical movement of the pedal into an electrical throttle signal that the controller can understand. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat it is used for\u003c\/h3\u003e\n\u003cp\u003eIts primary job is to provide the \u003cstrong\u003ethrottle command\u003c\/strong\u003e to the motor controller.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eDriver presses accelerator → PB8 detects pedal position → PB8 generates throttle signal → motor controller interprets signal → controller increases\/decreases motor power.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eWithout an appropriate throttle input device, the motor controller would not know how much acceleration the driver is requesting.\u003c\/p\u003e\n\u003cp\u003eThis makes the PB8 particularly relevant when converting an older golf cart from a conventional resistor-based drive system to a \u003cstrong\u003emodern AC motor\/controller system\u003c\/strong\u003e, such as a Navitas conversion. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eHow the PB8 works\u003c\/h3\u003e\n\u003cp\u003eThe PB8 contains two important electrical functions:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cstrong\u003eA 3-wire potentiometer\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eA 2-wire activation\/interlock switch\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe three-wire potentiometer is the part that translates pedal movement into an electrical throttle signal. As the accelerator pedal moves, it rotates the potentiometer. The resulting change in electrical signal is read by the motor controller and corresponds to the driver's requested throttle position. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe original Curtis\/HPEVS wiring documentation identifies the three potentiometer connections as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003ePot high\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWiper\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePot low\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe wiper provides the variable signal associated with pedal position. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe second function is the \u003cstrong\u003einterlock\/activation switch\u003c\/strong\u003e. This provides an additional safety\/control signal to the vehicle's electrical system. The HPEVS PB8 wiring documentation shows the switch operating in conjunction with the accelerator pedal and a normally closed circuit. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSo, mechanically, the pedal moves the PB8's lever; electrically, the PB8 turns that movement into a signal that the controller can use.\u003c\/p\u003e\n\u003ch3\u003eWhat it is combined with\u003c\/h3\u003e\n\u003cp\u003eThe PB8 does \u003cstrong\u003enot normally operate as a standalone component\u003c\/strong\u003e. It forms part of the vehicle's complete propulsion control system.\u003c\/p\u003e\n\u003cp\u003eA typical setup would look something like:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAccelerator pedal\u003c\/strong\u003e\u003cbr\u003e↓\u003cbr\u003e\u003cstrong\u003ePB8 pedal box \/ potentiometer\u003c\/strong\u003e\u003cbr\u003e↓\u003cbr\u003e\u003cstrong\u003eMotor controller — e.g. Navitas AC controller\u003c\/strong\u003e\u003cbr\u003e↓\u003cbr\u003e\u003cstrong\u003eAC electric motor\u003c\/strong\u003e\u003cbr\u003e↓\u003cbr\u003e\u003cstrong\u003eGolf-cart drivetrain \/ wheels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe PB8 is therefore the \u003cstrong\u003edriver-input component\u003c\/strong\u003e, while the motor controller is the device that actually manages the electrical power delivered to the motor.\u003c\/p\u003e\n\u003cp\u003eFor older Club Car conversions, the PB8 is particularly useful because it provides the type of throttle input required by the newer controller system while retaining a conventional pedal-operated interface. The product listing specifically identifies \u003cstrong\u003eNavitas AC conversions on older Club Car Series carts, resistor carts and Marathon carts\u003c\/strong\u003e as its main applications. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eWhy it is important in a conversion\u003c\/h3\u003e\n\u003cp\u003eWhen converting an older golf cart, you are effectively replacing the original method of controlling motor power with a modern electronic control system.\u003c\/p\u003e\n\u003cp\u003eThe new controller needs a reliable throttle input. The PB8 provides that connection between the \u003cstrong\u003ephysical accelerator pedal\u003c\/strong\u003e and the \u003cstrong\u003eelectronic controller\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eFor example, a conversion could involve:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExisting accelerator pedal\/linkage\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePB8 pedal box\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eNavitas AC motor controller\u003c\/li\u003e\n\u003cli\u003eAC motor\u003c\/li\u003e\n\u003cli\u003eAppropriate batteries\/battery pack\u003c\/li\u003e\n\u003cli\u003eAssociated wiring and safety\/interlock circuitry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe exact controller, motor, wiring and pedal linkage need to be compatible with the particular vehicle and conversion kit.\u003c\/p\u003e\n\u003ch3\u003eComponent \/ Function\u003c\/h3\u003e\n\u003cp\u003eIt is easy to confuse a \u003cstrong\u003epedal box\/potbox\u003c\/strong\u003e with a \u003cstrong\u003emotor controller\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThey perform very different functions:\u003c\/p\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eComponent\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eFunction\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccelerator pedal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eProvides the driver's physical input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePB8 pedal box\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConverts pedal movement into an electrical throttle signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor controller\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInterprets that signal and controls electrical power to the motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectric motor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConverts electrical power into mechanical movement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrivetrain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTransfers motor output to the wheels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cem\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003eDue to Curtis discontinuing the PB8 and PB6 boxes we are having to supply these clone boxes.  There are no longer Curtis built boxes in the world.\u003c\/span\u003e\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Curtis","offers":[{"title":"Default Title","offer_id":52579904028970,"sku":"PB8","price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0721\/5647\/9786\/files\/CurtisPB8.jpg?v=1789163286","url":"https:\/\/thehomeupgrade.com\/products\/curtis-pb8-pedal-box","provider":"The Home Upgrade","version":"1.0","type":"link"}