Again, we are both just guessing. His bottle could have been low on pressue, the bottle not up to the right temp, etc. etc. There are too many variables here that are missing. IMO you would loose traction more easily in the 1-2 shift and 3-4 shift. In the lower gears, you have more tq multiplication, especially with 4.10s. I don't have the specs for our transmission, but isn't 4th gear 1:1 or very close??

 

Here ya go JP.. Yes you are correct.. I think the 1/8th is more significant because of the speed at which the car is traveling.. Which is why Funny Cars, and dragsters use a wing to push the rear of the car down.. Be nice if Jan would pop up and help us out.. LOL!!


http://ford.jbcarpages.com/Mustang/2005/index4.php

Remember that Funny Cars and Dragsters use a wing, which is only effective after the 1st 8th marker.. Thats its only purpose, which is last 8th racing..

 

Nitrous is not a dead on constant everyrun.One day i was 116 all day and the folowing week I was 114 all day with no changes.Air temp,Barometric presure,Altitude,ETC there are a lot of varibles form one day to another or location of member to other members.So you are going to see diferant speeds with the same mods.Period

 

Also on that note Max2000JP, lets look at the 3rd to 4th shift as a transition from a 1st 8th race car, to a last 8th race car.. Which is why forth gear is so significant.. Where as the other gears allow the power of the engine to view the rear-end gear in relation to an offset, the 4th gear provides the rear-end and the power of the engine to correspond with each other on a 1 to 1 basis..

Using the shift from 1st through 3rd, we can view it as the engine looking around corners at the rear-end gear and only being able to apply enough power to them, with somewhat of a loss due to the angles of which the engine is forced to view them.. But when you make the transition from 3rd to 4th, the engine now has the ability to view the rear-end in pure focus.. This means, that all the power the engine has, can be directly given to the rear-end and can only be offset by the size of the ring gear.. This is why, once you make this transition from 3rd to 4th around the 1/8th marker, the speed at which the car is traveling, in conjuction with the engines ability to view the rear-end on a 1:1 basis, can cause a loss of traction, if only for a brief second.. This completes the transition of the car from a 1st 8th race car, to a last 1/8th race car, and since the amount of weight carried by the rear wheels is substantially less at this section, during the instantaneous transistion from seeing the rear-end around a corner, to a more direct relation to the rear-end, traction can be lossed even with slicks, if the power overshadows the amount of weight with which the tires carry..

 

thank you mike could not have put it any better,now sombody buy all my stuff so i can buy my turbo set up. :worship:

 

I respect MikeM and Clevland more than anyone here in regards to nitrous tunning and data submission.. But I submit to you MikeM, it is factually impossible for Jan to run a 113MPH trap speed based on a 1.61 60' time, unless he lost traction somewhere in the last 1/8th of the run.. Most likley on the transition from 3rd to 4th gear.. It does not add up MikeM.. You can sugar coat it, and based it like a chicken all you want Sir.. However, at some point someone must analyze the run and call it for what it is.. That is an 11.92ET @ 113MPH which could have been better.. Not to say that this is a bad run at all, and Jan should be commended for saving the 11.92 run from turning into a 12.01 run.. But the facts still compute to something happening in the 1/8th, which compromised the run's integrity by the time it finished @ traps..

Actually, what we need is the speed of his 1/8th mile to be more precise on the situation.. Perhaps Jan will share his 1/8mile speed and time, so we can further deduce whether or not there is a problem with a loss of traction after the 1st 8th marker, or perhaps a Nozzle distribution issue, or a fuel delivery problem somewhere in the last 1/8th of the race..

Like I said, MikeM has my respect, he is a Pioneer.. However, something happened on this run, which flies in the face of a 113MPH trap speed, coupled to a 1.61 60' time..

Learning from the numbers, can help to determine what happen.. we need 60', 1/8th to better understand.. If he has the 100' time, this would also help..

But for MikeM, a true pioneer to sweep it under the rug, wont help other GT owners running NOS spot problems or irregularities in their setup.. We must find out what happened MikeM.. You more than anyone should know Max2000JP is right.. He asked a darn good question, and deserves a darn good answer..

 

This list of Drag times proves my point.. Check it out!

http://www.dragtimes.com/Ford--Mustang-Drag-Racing.html

113MPH is too low, on a bad day!!

 

Ok I am going to try and help you here.First of all 5 of us on here all run in the 11,s with nitrous.We all are mostly running low 1.60,s and a couple of high 1.5,s in the 60 ft.all of our MPH,s are between 113 to 116 mostly 114,s so what is your question?I think you are getting a little to scientific.Trap speed is horsepower.It doesnt change.I can blow the tires away at the light and still go 114.My ET will be way off thats because i lost time in the 60 ft.I ran a 12.0 at 99 mph because i let off after missing 4th gear.His numbers are right on.None of us break traction after the sixty ft.

 

Everycar is diferant.gear ratio's rpm shift points.WEIGHT of car.i know a malibu that runs 10.80,s at 110.he is very light and is tubbed out.No slipping what so ever.You can have Lamborghinis that run low 12,s at 125 MPH because they leave soft.There is a mustang LX at our track that runs high 8,s at 185 MPH turbo car 185 would mean 7,s in a hard leeving car..Leaves very soft then turns the [power on.With nitrous we get a huge bang right off the line wich is giving us 11 second ets with not much mph.Supercharged cars are running 12,s with more MPH because they leeve soft then go hard.So every car is diferant.

 

JP,s performance 11.52 112 1.57 60ft=zex 125 shot
HotPony Best 1/4 mile time. 11.76 @ 114.95 1.600 60'
And Myself.The fastest one being John is running the lowest speed............See how this works yet?

 

Ok thanks MikeM.. I need more numbers.. So far, he's beating you by 1MPH at the 60' mark.. Your at 36MPH, he's at 37MPH.. I need more times such as 100' and 1/8th mile to continue the discussion.. So far, since you dont break traction after the 60' marker, somehwere you picked up 3MPH on him.. Which thus far equates to 4MPH, because he's got 1 on you at the 60'..

You said your running the 125Shot as well?

 

I can chime in a bit on this matter in regards to the track. The track is not all that great as far as traction. I run ATLEAST a 10th or 2 faster at other tracks. I haven't spoken to Jan yet, but my buddy did call me after Jan ran his 11.9. My buddy told me that not too many were hooking up all that great. It's a slick track which is slated to be re-surfaced in 2 yrs. When they have events, I hook up pretty good, but when I ran at Bradenton (NMRA event) I was running .18 better. On test and tune nights, there is EVERYTHING from F350's to camry's to railcars running. All kinds of rubber on the track. Jan runs in the sportsman class which is the same as run what you brung. Most of the cars on street tires carry all kinds of water from the box to the staging lights. It's very annoying. That's pretty much how I got into dial-ins. The dial-ins run after all the true slicks classes.

I don't think Jan has power yet down where he's at, so he will only get on the internet at random-in regards to him elaborating on the conditions.

 

Thanks for your thoughts 169Stang.. So in short, your kind of eluding to the possibility that it is possible a traction loss did occure? I'm not causing trouble, just trying to understand.. Based on your statements, you somewhat agree with me, that MikeM found 4 more MPH due to Jan losing traction somewhat after the 60' marker correct?

I understand it may upset MikeM, for you to take my position on this. But we are just trying to figure out what happened to 3 or 4MPH.. Its nothing at all personal..

 

it's called we need more fuel pump had i have a better fuel pump my car would have gone 120 with no problem and yes i did go 11.52-112 so get over it is what it is.

 

I wont get upset but take this into factor Jp,s performance has 4,30 gears and Myself and hotpony run 4,10 gears.
In the 1/8 I run 7.62@ 91.09mph.I am not sure on the others.Also i am running the 125.i still dont undersatnd your actual question here........No two cars are going to be the same.And there is nothing wrong with the MPH we run.We have good 60fts for the horsepower we make.
Anyways time for bed talk to you later.

 

7.27 1/8 -93.73 1.57 60ft 125 shot good night.

 

Kool MikeM, we'll see what Jan says.. I am just saying, it looks like he could have actually run much faster. He left some change on the table.. Thats all..

 

Nice job bro, enjoy it. The nitrous guys are kickin' hineys

Gotta love that torque

 

I dont think any change was left anywhere.

Trap speed is ONLY measured in the last 66ft of the 1320..for those that dont know.

 

I am just trying to do some research on nitrous in the 05's. My car with 3.55 gears and full weight trapped 108.4 and 109.1 with the mods in my sig. I know my car could trap 110 with a 4.10 gear, track prep(vehicle), and D/R's. With that beign said, JP's car is only trapping 3 mph more than my car and he has a 125 shot. Trap speed is an indicator of actual power. I do see that he pulled a great 60', but I would expect a much higher trap. What gives? Anyone have a dyno of a Nitrous 05 that I can take a peek at?