Men... I am no electrical engineer and have been busting my butt now for 5+ days trying to figure out this dual line lock wiring system.

I need 4 tires LOCKED on the starting line being held by two seperate line locks, a 2 step and launch car off of ONE button.

All 3 items need the 12 volts ON via the button for this to happen. I seperated the FRONT line lock for burn out purposes, so now it is a stand alone item, but would like to incorporate into the overall system for staging duties.

I bought a STARTER button, wired my 2 step and rear line lock into that. This doescharge the 12 volt signal but also blows fuses.

I hot wired the starter button, tied it into the front LL switch and grounded it. What in em funk am I doing wrong?

I am a MORON and am at the end of my SHORT rope. ANY HELP out their in engineer land?

Kevin Hinkley

 

You need to determine how many amps all the devices your going to run will require first off. Once you have figured this out make sure you have some relays wired into the mix!

I don't use a two step so my knowledge of how they wire up is vague, basically depending on the amps each device will require, you probably can get away with using a transbrake push button and mount it on to your steering wheel. This will be your trigger and I will figure if you used two 40 amp relays wired to gether you will have no problem working everything. If your unsure on how to wire a relay you can reference a few sites to get information like MSD ignitions and Performance Engineering fuel systems has wiring instructions. Just remember to use the transbreak button as the trigger and not loop your heavy power wire thru it.

Good Luck!

 

A word to the wise...

NHRA Banned line locks on the drive wheels back in 95. I had to remove mine to pass tech. they would not even let me runn with the wires cut.

Good luck!

 

Are you sure it was the NHRA who banned them or just your local track. The reason I'm asking is because I can't find anywhere in the NHRA rulebook where it says they are illegal. However, Maple Grove says this:

Heavy Eliminator:
10.00 to 15.99 seconds. No electronics or transbrakes permitted. No rear-wheel line locks. Two-step permitted as a high side rev limiter only. No Dragsters or Altereds.

I don't think they would list it as a specific class rule if it was already illegal per the NHRA.

 

how does a two step work? maybe i can help ya out after i know that. is it just a rev limiter, and when the 2step box loses power, the motor can then rev past the limiter implied by the box?

i guess what i am asking here is, does the 2step need to have 12v applied or taken away for the car to launch? i know the linelocks must have it taken away

let me know, i think i got somethin that will work.

 

i guess im confused here. you say all 3 items need 12v when you press that button? wont that activate the linelocks?

 

i got somethin figured out here, if all the items need 12v to launch or if all 3 need to have 12v taken away when you launch.

The front LL would have a seperate switch for a burnout.

upon pressing a button, you would activate both linelocks, and the 2step (if the 2step works how i think it does). on launch, release the button, all 3 lose/get power and your car goes.

i can fax it to ya or ill try to get a pic up online

 

http://www.acaenterprises.com/upload/2stepll.jpg

look good? sorry about the paint job, its all i have though.

that can be mixed up a few ways.

currently the 12v to every item is switched, and it kills 12v to everything when you launch.

it can be switched around easily to switch ground on the items, and supply 12v when you launch.

gimme some feedback

 

This was In Divion Six. I know Five and Seven are enforcing the same rules.


Maybe it is just a west coast thing.

I know Divion Six is letting trans breaks slide this year but next year they may be gone in all E.T classes except Super Pro.

I have been wrong before. Check with your Divional tech inspector

 

many classes per nhra have rules banning rear wheel linelock.

why do you even need a rear linelock? How about a transbrake instead

 

A two step rev limiter references the default RPM setting with NO power applied to the two step input wire. When power is applied to the two step wire, the second RPM setting is used. The default RPM setting is usually your Hi rev limit, and the two step is usually set to your prelaunch RPM.