I’ve seen this on flyers forever but it was before my time. What is down track studder and why is it illegal?

Was it just a burnout button? Was it a timer? Triggered by driver or automatically?

In the 80's some races used rev limiters to run S/G

I don't know the exact way they were turning on the rev limiter since I never used one

One guy did it at the top end and you could hear him popping and banging from back by the starting line

I saw others doing it at mid track or earlier

I don't know if they were manually turning it on or had some other method

T-Stop stuff was limited back then so racers got creative

I tried timing retard once and that didn't work well....blew up a motor right after I turned it on.....!!

NHRA did not like it and what it looked like.....Rev limiters were not nearly as smooth as todays ignition boxes. Popping, banging, smoke out the back....

They added the sentence....NO DOWN TRACK STUTTER BOXES....

This message has been edited. Last edited by: SCDIV1,

quote:

Originally posted by SCDIV1:
In the 80's some races used rev limiters to run S/G

I don't know the exact way they were turning on the rev limiter since I never used one

One guy did it at the top end and you could hear him popping and banging from back by the starting line

I saw others doing it at mid track or earlier

I don't know if they were manually turning it on or had some other method

T-Stop stuff was limited back then so racers got creative

I tried timing retard once and that didn't work well....blew up a motor right after I turned it on.....!!

Man! How much timing did you try to take out?

IN the days of the stutter box, they were mean. They all sounded like hell, but they would be mean, wether you used it at mid track or at the top end.

quote:

Originally posted by Holytown:

quote:

Originally posted by SCDIV1:
In the 80's some races used rev limiters to run S/G

I don't know the exact way they were turning on the rev limiter since I never used one

One guy did it at the top end and you could hear him popping and banging from back by the starting line

I saw others doing it at mid track or earlier

I don't know if they were manually turning it on or had some other method

T-Stop stuff was limited back then so racers got creative

I tried timing retard once and that didn't work well....blew up a motor right after I turned it on.....!!

Man! How much timing did you try to take out?

I think it was 15 degrees......bad idea......Had to call MSD and had them make chips and I'm pretty sure I still have them...

I really don't know if the timing retard puked that engine but it happened right after I flipped the switch.

A flat top 350 SB Chevy SS short block with short skirt lite weight pistons....Thin wall wrist Pin broke and piston literally turned sideways in the block IIRC....

I trashed a few SB's in my day !!! LOL Went to a BB and was very glad I did.....

quote:

Originally posted by KWig:
IN the days of the stutter box, they were mean. They all sounded like hell, but they would be mean, wether you used it at mid track or at the top end.

Why would down track stutter be illegal but throttle stops wouldn't be at a bracket race?

If you're on a faster run, you'd run into the rev limiter sooner, killing more E.T.
If you're on a slower run, you'd run into the rev limiter later, killing less E.T.
This leads to 'abnormal' consistency. This was outlawed so many years ago that I thought everyone knew about it.

Driving into the chip was something a couple guys were doing IMHO

One guy I recall and won't name was doing it...in a S/ST car

Heard him more than once and of course I can't prove it but when you hear it a few times it's suspicious...

Another racer I know well was checked just a couple years ago because someone said he had a rev limiter button on his steering wheel....

quote:

Originally posted by SCDIV1:
Driving into the chip was something a couple guys were doing IMHO

One guy I recall and won't name was doing it...in a S/ST car

Heard him more than once and of course I can't prove it but when you hear it a few times it's suspicious...

Another racer I know well was checked just a couple years ago because someone said he had a rev limiter button on his steering wheel....

No, no it's valve float. LOL

Used it in an IHRA National Event when it was legal, in the Hot Rod class. Tested with it once and ran the one race with it. Got down to the Quarter Finals at the National Event and never ran the class before. Using it was deadly in regards to running the number. I guess that's why it's illegal now.

NHRA ruled them as illegal but I've never seen the rule enforced, not once.

Bob

Holytown, IHRA does not allow throttle stops for bracket racing.

Using rev chips to control et worked great. There were also so many ways (configurations) to kill et. Hit the tree, bring in the chip let the chip go and bring it back again,etc. Late 80"s to in to the early 90,s. Very simple to do and did not take many passes to get what you wanted.

quote:

Originally posted by RPROGAS:
NHRA ruled them as illegal but I've never seen the rule enforced, not once.

At an IHRA National Event years ago, a Stocker had changed the rear end gear and inadvertently ran into the high side chip in the traps. The racer was warned that if it happened again, they would be DQ'd. The racer either raised or pulled the chip to comply.

quote:

Originally posted by RPROGAS:
NHRA ruled them as illegal but I've never seen the rule enforced, not once.
Bob

NHRA official actually met me picking up the time slip in Pomona the year I went for the world finals for hitting it first time run. We only run 1/8 mile here bracket racing, and only had run my roadster in 9.90 trim on the long track, never hit the chip cause the stop I guess. Ran it wide open in Pomona and hit the chip about 100-150ft before the finish line. It didn't help I was going 8.90s and the dragster I ran was going 7.20s so it was clear what they heard but they did tell me to up the chip before the 2nd time run and they'd be listening again.

quote:

Originally posted by MadMax4040:

quote:

Originally posted by RPROGAS:
NHRA ruled them as illegal but I've never seen the rule enforced, not once.
Bob

NHRA official actually met me picking up the time slip in Pomona the year I went for the world finals for hitting it first time run. We only run 1/8 mile here bracket racing, and only had run my roadster in 9.90 trim on the long track, never hit the chip cause the stop I guess. Ran it wide open in Pomona and hit the chip about 100-150ft before the finish line. It didn't help I was going 8.90s and the dragster I ran was going 7.20s so it was clear what they heard but they did tell me to up the chip before the 2nd time run and they'd be listening again.

I've seen how consistent that roadster was. It's been hitting the chip for years.

I believe the last year the stutter box was allowed was 1989. That's the year Russell Witt won S/C at the NHRA SportsNationals in Bowling Green after purchasing Steve Cohens dragster. We figured out how to make it super deadly on the top end. After the box was ruled illegal Russell never won another round S/C.

before 3 steps came out i used a 2 step . put the desired rpm limit chip in the low side position or the position activated by applying 12 volts . trigger wire was attached to timer . excellant repeatability and if set up right no one can tell it and remember nhra was on the muffler kick , thanks for the help guys . now with grids etc no one worries over this simple setup and no one is smart enough to figured out a grid setup or davis setup lol . softly pulling timing or limiting rpm and no one is the wiser .

quote:

Originally posted by Holytown:

quote:

Originally posted by KWig:
IN the days of the stutter box, they were mean. They all sounded like hell, but they would be mean, wether you used it at mid track or at the top end.

Why would down track stutter be illegal but throttle stops wouldn't be at a bracket race?

Need to clarify what bracket race. Tracks can use any set of rules they wish, sanctioned or not. Sanctioned tracks only have to comply with safety rules. Racers only have to comply to the rules applied at the race they are at.

Fyi every racecar out there has a rev limiter button aka burnout button. As long as the burnout rpm is less than the top end rpm. I have went after the override and got the burnout button 2x ! Thought I blowed it up both times.