Gear Discussion - Timeslip Comparo 2 trucks

[Django]

The change to 4.56 gears will lessen the wheel spin issue.
You will have less wheel spin with the lower ratio gear.
It is also harder to break the tires loose with a numerically lower gear ratio.
You will be using HP to acelerate the vehicle instead of trying to do it with touque.
With a lower gear the tires will "turn over" and not spin as violently out of control as with a 4.10 or higher gear.

This is a very common misconception that has been going around for years.

Is that right, Jack....................???

Please explain to me how "turn over" practically equates to better bite please.... How is "turn over" different and why doesn't a lower gear spin as much.....

This has got me baffled as hell..........

SD

 

[blown srt10]

im new on here i just got this truck from a guy in il and he had all the stuff already done and i went to union grove last thursday and i went 12.48 and had a 1.84 on stock tires do i have a freak truck or am i just driving it better

 

[Django]

im new on here i just got this truck from a guy in il and he had all the stuff already done and i went to union grove last thursday and i went 12.48 and had a 1.84 on stock tires do i have a freak truck or am i just driving it better

Welcome to the Lion's Den.......Those times are nothing to be ashamed of....

But some of our Paxton guys are making it into the 11s, but it is a constant struggle with launch and shifting too for RC guys....

SD

 

[Django]

If you're spinning the tires at launch with a 4.56, you would likely launch better with a 4.10. The rearend acts as a multiple factor. Per revolution of the driveshaft, the tires will rotate less with the 4.10 vs 4.56. In a low power application you generally don't have issues because you don't have enough power to spin the tires.

I'm starting with a 4.56 and fully believe I'll have to switch to a 4.10 in order to get this thing to hook, regardless of how big of a tire is under it. Same will go for anyone making over 750 or so.

My question was directed to a point Jack made.........I have nothing to more to say to you....

SD

 

[blown srt10]

the truck has bellenger long tubes no cats magnoflow 456 gears vec 2 k&n and i think he got all the parts from boomer no supercharger is on it or no nos and the track was very good it bouged and i brought it out at 3000 with 15lbs in the stock tires and yes im very happy with the time the guy i bought it from thought i had a blower but its not on yet

 

[ViperTruck2933]

Neither one of the trucks had any issues with traction off the line. As I mentioned before I intentionally launched very soft because I haven't been to the track all summer and I didn't know if it would hook.

Here's what I noticed on the run and what I am trying to decifer...The 4.56 truck pulled on me slightly out of the hole. In the top half of 2nd gear I pulled some back on him. He pulled back ahead a little on the 2-3 shift (he has Boomer's shifter, I don't). Once we got back into it in 3rd gear I made another run on him and given another 100ft of track I would have probably nosed ahead again.

I am looking to see where the advantage is if you consider the whole 1/4 mile race. I have consistently had better launches and better 60's, 330's etc...than the 4.56 truck did. And that was his best run of the night.
That was unfortunately my only run of the night. :dontknow:

 

[FlyingLow]

the truck has bellenger long tubes no cats magnoflow 456 gears vec 2 k&n and i think he got all the parts from boomer no supercharger is on it or no nos and the track was very good it bouged and i brought it out at 3000 with 15lbs in the stock tires and yes im very happy with the time the guy i bought it from thought i had a blower but its not on yet

15lbs? I have not lowered my psi that much and I always worried lowerring it past 25. Is that safe? That low tire pressure had to help you get the good 60. You said 12.48, what was the MPH? That was some good runs you did. What was the temp at the track? Welcome to the forum.

Smoke

 

[blown srt10]

i have been racing for a while ive always lower my street tires very low the track was very cool that night in wi it was around 45 degrees and my mph was 113 if im running like this on all motor what will my truck run when the sc is put on with some good tires

 

[ViperTruck2933]

If you ran 12.48@113 in the 1/4 mile all N/A you are BY FAR the fastest all motor Ram SRT10 we have ever heard of. Are you sure that wasn't a 1000ft track? Can you post a scanned timeslip?

 

[blown srt10]

that was a 1/4 mile at great lakes dragway in wi yes i have the time slip but how do i put it on the computer im new to the computer to thats what i dont under stand how my truck is running so good when everbody else is running in the 13s with same set up i live in west suburbs in il if any body was close we could meet and run for a little fun

 

[FlyingLow]

that was a 1/4 mile at great lakes dragway in wi yes i have the time slip but how do i put it on the computer im new to the computer to thats what i dont under stand how my truck is running so good when everbody else is running in the 13s with same set up i live in west suburbs in il if any body was close we could meet and run for a little fun

Do you have a scanner? If so just scan it and attach it or just type in all the info from the slip. That will probably be good enough.


You do have a very fast RC. I'm guessing with the VEC2 tuned for the long tubes, no cats and K&N you are squeezing every bit of HP out of that beast. I went 12.7 @ 108 with K&N, no rear cats and stage 2. So with your added mods plus a great 60 added to the cool outside temps gave you a great run. You should get a dyno and see what the baby is putting down. Wait maybe a dyno is not a good idea. Running low 12's is good enough for me.

Smoke

 

[Hamrhead]

i have been racing for a while ive always lower my street tires very low the track was very cool that night in wi it was around 45 degrees and my mph was 113 if im running like this on all motor what will my truck run when the sc is put on with some good tires

I'm hoping to get real close to your ET next time I hit the track, but I seriously doubt I'll do 113mph.

 

[blown srt10]

when you all go to the track do you speed shift ever gear or do you let off and make sure your in gear im speed shiften ever gear but for some reason if i go above 5600 the clutch will not let me in the guy i bought it from has a center force in it what are you all shiften at

 

[mauiSRT/10]

Your shifting at the right spot. Any higher rpms and you would loose power.

Welcome to the RBC dude.....and yes you have a damn fast truck.

patrick

 

[blown srt10]

thanks i just dropped it off its getting a paxton a cam custom intercooler and a meth kit so it should get down when it comes out oh yeah its getting dyno duned

 

[FSTJACK]

It was for general knowledge and not specifically at you. I'm sure others wondered as well.

1Fast you are wrong about spinning the tires on launch more with 4.56 gears vs 4.10 gears. It is the other way around. Get your facts straight.
There is already too much misinformation on this forum for more to be propigated.

 

[Django]

1Fast you are wrong about spinning the tires on launch more with 4.56 gears vs 4.10 gears. It is the other way around. Get your facts straight.
There is already too much misinformation on this forum for more to be propigated.

This could get way more interesting than even I can imagine.........

Jack............................ I gotcher back if it gets fugly in here........

SD

 

[ViperTruck2933]

1Fast you are wrong about spinning the tires on launch more with 4.56 gears vs 4.10 gears. It is the other way around. Get your facts straight.
There is already too much misinformation on this forum for more to be propigated.

Jack, can you elaborate more on this? This is the info I am looking for.:rock:

4.56s will spin less off the line, but you will have to shift sooner and you will be at a higher rpm when you hit the traps right? Isn't it also true that our trucks pull harder in the lower rpm range which means the 4.10s will pull harder on the top end?

 

[FlyingLow]

Jack, can you elaborate more on this? This is the info I am looking for.:rock:

4.56s will spin less off the line, but you will have to shift sooner and you will be at a higher rpm when you hit the traps right? Isn't it also true that our trucks pull harder in the lower rpm range which means the 4.10s will pull harder on the top end?

I thought our trucks pull harder in the higher RPM's?

 

[ViperTruck2933]

I thought our trucks pull harder in the higher RPM's?

LOL, I am trying figure all this out. I know for sure, side by side down the track my truck out pulled the 4.56 truck in the 2nd half of the 1/4.

Now just trying to figure out why. Only other difference is the type of headers, BUUTTT I have cats and he doesn't. So they should offset IMHO.:dontknow: