What electronics is everyone using on the big motors?

[DragHammer]

was curious what kind of ignition boxs,delay boxs,triggers,launch controls everyone was using in there dragtrucks?

also maby some likes and dis-likes of electronics you've used.

[djracer]

I have a MSD digital seven model 75301. Its pretty sweet I have the hand held controller which is hard to use or I can tune it with a laptop. I also have a Procube delay box with built in timers that I sometimes use to shift or delay the nitrous.

[DragHammer]

is the ProCube getting you the reaction times you want?
or are you just using it for shifting and nitrous?

ohhh and how are you using it to shift? ( a PowerGlide right?)

[djracer]

I'm not great on a pro tree but I plan to work on that some when it goes back together. I don't know how much of its truck and how much is driver.

[Marv D]

I'm running the same digital 7 ignition as Kevin, and Dedenbear Command Center CC3. I run a sportsman tree but the CC-3 is is just a button to switch between Pro / sportsman tree. Use it for.. the delay obviously, timed air shift, (it had throttle stop controller built in but I don't use them) I also run a Edelbrock QuickData data logger to keep track of how everything went (after the fact I guess)

Just a FYI, I used to shift by rpm which the CC-3 will do just fine. Then NHRA went and changed the rules and you can't have ANY RPM sensing wire connected to the delay box... period. So I had to go to time based shift. To my surprise things got a little more consistant even tho the shift RPM can vary depending on a tight or loose track.

[nomrlz]

always ran dedenbear as well. the digital 7 stuff is damn nice.

[DragHammer]

from what I'm gathering is "most" everybody is using there delay to shift.

so does that mean there are air shifters involved???

and is this more consistant then watching a shift light and bumping the shifter?

[Marv D]

I use air, but Contender and a lot of other outfits make a 'shiftnoid' electrical solenoid kit for 2 and 3 speed shifters.
Just like reaction times of the tree, no way can you react to the shift light as consistantly as electronics. Your ET will be boatloads more consistant with precise, consistant shifts. Think of it this way. Your eye has to sense the shift light, send the signal to your arm to slide the shifter up into the next gear. They your trans has to re-dirrect the fluid to apply the clutches, and actually complete the gear change. Now compare that to electronics sensing a set RPM threashold,, reacting on the millisecond level, opening a air solenoid that can react in 0.001 seconds, and 50psi of air pressure SLAMMING the shifter forward to the next gear in the gate. Depending on the type of trans and valve body,, all this can take 1/100 of the time it took your brain to realize the shift light came on,,, and you haven't even started to send the signal to your hand to move the shifter. Not only that, the electronics don't get distracted by other things going on in the cabin, or on the track.

Like I said, NHRA recently enacted a new rule that prohibits ANY rpm sensing wire to be connected to the delay box / command center. Guys were using the throttle stop and rpm limit functions on the top end to be DEADLY consistant in index racing. (Ask Regan,, I'm sure he knows exactly how there doing it running 150+ @ 10.900)