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#1 |
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start a poll to put it back on the steering wheel and not mess with all the crap to put it on the brake pedal
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#2 |
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I guess a lot depends on rules.
I only bracket race so I put a brake pressure switch in the brake line that activates the 2 step. Obviously it will activate it down track so I first started with a toggle switch to turn the circuit on. That became a bit of a pain so I put a pushbutton on the steering wheel. I rest my thumb on the button for launch and just slide it off as i go down track. |
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#3 |
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Technically speaking, you can't use a hand operated switch or button anywhere in the system, in STOCK ELIMINATOR.
If you mount a micro switch to complete the circuit in low gear, and it is positioned where you couldn't leave the line off it, I don't believe anyone will bother you about it.
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#4 |
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I run a turbo 350 and made up a bracket to mount a micro switch on my shifter, which is only closed when the shifter is in first gear.
It is wired in series with the push button switch, installed on my brake pedal. The two step is activated only when the push button switch and the micro switch are closed. Works like a charm.
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Thomas NHRA 1959 D/SA |
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#5 |
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Thomas can you post or send me a picture of how you mounted your switch on the shifter?
Thanks Robert |
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#6 |
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Just to clarify things, the rule book states that starting line stuff like line lock and trans brake must have only one switch in the circuit. A rough quote goes like this:
"One wire from a power source to a switch and on to the activated solenoid," power->trigger switch->solenoid. (They seem to forget the ground wire). I have what I call "circuit power" switches for both my line lock and trans brake on the dash in aircraft covers so I can bat at them and kill the power to those devices at any time. I would just hate to bump my TB button during a run. I consider these additional switches safety devices. Dale
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#7 |
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From the 2016 Rule Book, in the in Section 10 Stock Cars
IGNITION, Automatic Two-step permitted. Two-step must be foot-activated through brake pedal, clutch pedal, or pressure switch. Hand release prohibited. All wiring associated with the ignition system must be fully visible, labeled, and traceable. See General Regulations 8:3. And, from the General Regulations . 8:3 IGNITION Each car in competition must have a positive-action on/off switch, capable of de-energizing the entire ignition system, in good working order, located within easy reach of the driver. “Momentary contact” switch prohibited. Magneto “kill button”-type switches are prohibited. All ignition systems and/or components wiring harnesses and attachments must utilize those supplied by the ignition system manufacturer. The wiring harness must be used in an unaltered manner consistent with the manufacturer’s installation and instruction books. All wiring associated with the ignition system must be fully visible, labeled, and traceable. All removable or pin-type timing devices are prohibited. Two-steps or other rev limiters that are adjustable by thumbwheel, replaceable chips, and the like may not be within the driver’s reach and will preferably be located outside the driver compartment. The use of any programmable multi-point rev limiter and/or a rate-of-acceleration rpm limiter, either by themselves (e.g., MSD 7561 , MSD 7761 ) or integrated into the ignition system (e.g., MSD 7531 ), is prohibited in NHRA competition. From all I read there, you are good to go with the micro switch on the shifter.
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#8 | |
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You have a PM.
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#9 |
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