Six shooters box

It may be a strange or a stupid question and I will live with it...but: could it be possible to use or connect a Six shooters box in a way "to add" timing during a run ?
Thanks,
Charles Stewart

 

Sure, set your base timing at the max timing you want (in effect what it would be when you "add"), then use whatever chips you need to make it more or less throughout the run. So lets say the most you want is 28 degrees.....launch the car at 18 degrees (-10chip)...maybe 200ft. out you want it at 26 (-2chip) then at 400ft. 20 degrees (-8chip) then from 600 to 1320 you want it at 28 (0chip). Hope that helps.

Brandon Booher
NHRA TAD #323

 

Hi Brandon,
We are presently running that way, but could it be possible to have as an example:
Base timing at 24, then add 2 degree for 50 feet, then go back to 24 degree...by pluging or connecting the Six Shooters box in a different way ?
Thank for your help,
Charles Stewart

 

how are you activating the 6-shooter now?

 

From the crank trigger, to the six shooter box then, to the mag 44.
Charles Stewart

 

I'm 99.9% sure that cannot be done as it picks up the base timing off the crank or mag.

Brandon Booher

 

thanks M. Booher and NMR02114 for your reply.
But, I still have one more:
Can timing goes up by some "form of electrical interference" ???

Charles Stewart

 

The six shooter must be controlled by switches of some sort. Many ways to do it. The above posts are correct in that the base timing is maximum and everything else is a retarded setting from there. This could be micro seconds between changes to one setting for the whole run. The Leahy control box (www.electrimotion.com) is very slick. Of course the MSD or Leahy can build a timing curve but a six shooter can have 5 changes. Automan (www.automantechnologies.com) also has great quality control systems.
hope this helps
Dale

 

if you set max timing and sink the rotor up to be deadon at the max timing have far can you retard before rotor is to far away for it to jump effectly

I am taking with 6 shooter or control computer

 

Here is the answer from the MSD website; http://www.msdpromag.com/

Question 5. What's the maximum amount of timing I can retard with the Pro Mag Timing Retard?

The largest retard chip we make specify for the Pro Mag Timing Retard is 30º these can be purchased at the MSD trailer or special ordered from the Pro Mag Department. They only cost $8 each.

The Pro Mag Timing Control was initially designed with a maximum of 15º of retard, but at the racers request we have pushed the unit to 30º of retard. By doing this the calibrations have changed slightly from 15º to 30º here are the values:

16º = 16º, 17º = 17º, 18º = 20º, 19º = 21º, 20º = 22º, 23º = 23º, 24º = 24º, 25º = 25º, 26º = 26º, 27º = 27º, 28º = 28º, 29º = 29º, 30º = 30º

Note that a 21º and 22º modules are missing this is because the calibration is NOT Linear at this point. The unit was not intended to work past 30º and it was also our intent to replace the unit with the Pro Mag Programmable Controller that would be very accurate from 0º to 35º. But the Programmable unit is not approved for use by the NHRA. (Caution: These degree modules are calibrated specifically for the Pro Mag Timing Retard and will NOT work with other MSD products.)

there is lots of great info including a video clip of the rotor phasing which is critical when making large changes.

hope this helps
Dale

 

No, the chips are a form of electrical resistence. If you want more timing, set the base higher than normal and do the chip +/- thing. You can stack six shooters on top of each other if you need more stages. Remember the "1" hole is what your motor will be when it's started up. Once you engage (clutch pedal/transbrake) the controller (MSD or Leahy) it will cycle from "2" to whatever the last stage is..be it 6 or 9,10,18, etc.. There's no need to invent a way to "add" timing, since what I'm telling you works and is the way anyone who uses a 6 Shooter does it. Dave Leahy is a smart dude....if he doesn't have a box that "adds" timing...you aren't going to figure it out yourself....on top of that it simply cannot be done. You measure it at the crank or the mag...you'd need some kind of pnuematic control to move the crank or mag pickup....if it's off by a bit...or you forget to turn the air on...bye bye cylinder heads/block. Hope that helps.

Brandon

 

I use the Leahy box and it works every time.

 

So the burnout will also be retarded...??? If you have an other chip then zero on the first stage? Am I with you on this?