I am doing a research paper on drive-by-wire accelerator systems. Could someone please post the NHRA rule on gas pedals? (or a super discreet link to that section of handbook). I know it has to do with double return spring requirements, but I want to fact check before I use it. Thanks!
I found this...... http://www.nhra.com/UserFiles/file/General_Regulations.pdf Regardless of class, each car must have a foot throttle incorporating a positive-acting return spring attached directly to the carburetor/injector throttle arm. A positive stop or override prevention must be used to keep linkage from passing over center and sticking in an open position. In addition to return springs, some means of manually returning the throttle to a closed position by use of the foot must be installed on all altered linkage systems except hydraulically or cable-operated systems. Per Class Requirements throttle control must be manually operated by driver’s foot; electronics, pneumatics, hydraulics, or any other device may in no way affect the initial throttle operation. In Super Street, Super Gas, Super Comp, and certain E.T. bracket classes, timed throttle stops are permitted that use pneumatics and or electronics to modulate the throttle after initial launch. Cable throttle systems permitted. NHRA-accepted hand controls for the physically challenged permitted. Choke cables and brazed or welded fittings on steel cable prohibited. No part of throttlelinkage may extend below framerails. Google is a wonderful thing.
