2019 IHRA Rulebook

IHRA 25 be located above top of drive tires or outside of frame. Batteries must be installed so as to withstand a force four times (vertical) and eight times (horizontal) the weight of the battery pack, and each battery or battery pack must be secured with bolts and straps commensurate with the size and weight of the battery (see chart). Vehicles are permitted to be ABSORBED GLASS MAT-style batteries for power source. The use of flooded batteries is limited to an IHRA-accepted installation. Traction motor and/or high current wiring may not be located in driver's compartment. Instrumentation wiring permitted. All traction wiring must be isolated from vehicle chassis. Battery in rack/box or with cleats Battery on flat plate with strap only Bolt size Battery weight Bolt size Battery weight #8 15 #8 6 #10 19 #10 7.5 1/4 36 1/4 14 5/16 57 5/16 23 3/8 83 3/8 34 7/16 114 7/16 46 1/2 152 1/2 61 9/16 195 9/16 78 5/8 243 5/8 96 FUSING OF BATTERIES: All battery packs must have over-current protection. Circuit breaker(s) or fuse(s) permitted. Such protection devises must have a DC voltage rating equal to or greater than nominal pack voltage. Current rating must be lower than master disconnect, wiring and battery pack can carry without damage. Battery sub-packs must be individually fused. IGNITION: All vehicles must be equipped with a switch, attached to the driver with a lanyard, capable of shutting off all power to the motor. Switch may actuate relay or contractor. Solid state switch prohibited. A flashing yellow light must be affixed to top of roll cage indicating when electrical system is energized. MASTER CUTOFF: All vehicles must incorporate a master electrical disconnect switch that must disable all electrical functions. Switch must be located on the deflector plate no more than three (3) inches from the top of roll cage. Must be clearly labeled as to “off' position. Must disconnect all power from motor. Switch may actuate relay or contractor. RECHARGING: Batteries may be recharged in pits or other designated areas only. Polarized plug connection to battery pack from charger mandatory. VOLTAGE: Maximum permitted operational voltage 144 volts nominal. Voltage checked at battery pack. No load using digital voltmeter, Maximum fully charged battery-pack voltage 156 volts. MATCH RACE EXHIBITION VEHICLES Although vehicles in this division don’t necessarily compete in a specific IHRA class, they must comply with all basic safety regulations for their respective type vehicle as per the IHRA Rulebook and its supplements. A valid IHRA Competition license and or registration is mandatory. Chassis inspection mandatory on 9.00 and quicker (6.00 and quicker 1/8 mile). Contact IHRA Tech Department for the supplement to this rule book that outlines the specific requirements and specifications for the exhibition program. Additional information is available on the competition page of ihra.com. All vehicle designs and drivers credentials must be accepted prior to participation at any IHRA sanctioned facility. Contact the IHRA competition department for a detailed list of accepted participants and current vehicle types in addition to the progam supplement. ROCKETS : Prohibited. TWO AND THREE-SEAT DRAGSTER Designed for carrying a passenger, in exhibition only. May not be entered in competition while carrying a passenger. Runs are limited to 1/8 mile, 135 mph or 5.00 seconds. Driver and passenger must wear SN-2010 or newer helmet, SFI 3.3 neck collar, SFI 3.3/5 gloves, SFI 3.3 arm restraints, SFI 3.2A/5 driver’s suit. Passenger must be 18 years or older. Driver and car must meet all requirements of IHRA for its class.