Members Login
Post Info TOPIC: torque application


PRINCE EDWARD COUNTY, ONT

Status: Offline
Posts: 1001
Date:
torque application
Permalink  
 


Here is a little exercise I would like you to do.  If you know how much torque your engine puts out and if you know your first gear ratio and you know your rear end ratio, multiplying these three numbers together should give your torque at the rear wheel.

i.e. 260 (torque expected from 261) x 2.52 (1st gear in TH350) x 4.11 Rear gear = 2693

What height rear tire do you run?

There has always been talk of that 2693 number or whatever but what is the best number or the average number.

Humour me.

Thanks

Warren



__________________
You can only make it better


CLINTON, ONT

Status: Offline
Posts: 3883
Date:
Permalink  
 

My friend/boss's 2005 1 of none    2500HD short box 2wd    was at Indiana last fall   595 HP 1042 ft lbs torque   I have the (dyno sheet)

 

1042 x 3:10 1st Allison trans x 4:10 rear   running 305/50R-20 at 32 inches high

 

1042 x 3:10 x 4:10 = 13,244 ?  

 

 

 

 

 

https://www.youtube.com/watch?v=RLhsShVRhCA&list=FL7q2MDGQ7hzIjv6xbozPX4g&index=1



__________________

 

 



BUCKHORN, ONT

Status: Offline
Posts: 685
Date:
Permalink  
 

depends too on where you want to be with rpm.



__________________

don't walk in like you own the place..........walk in like you hold the mortgage.



FOXBORO, ONT

Status: Offline
Posts: 1899
Date:
Permalink  
 

Humour me. here you go and i doubt whether it will tickle your funny bone much after carl's numbers.
- 15" street tires or 15" m/t slicks used.
-
-max trq @ 5200 rpm, 738 tq x 2.74 1st gear X 3.90 rear = 7886

__________________
if your not the lead dog-the view is all the same


FOXBORO, ONT

Status: Offline
Posts: 1899
Date:
Permalink  
 

wuga wrote:

Here is a little exercise I would like you to do.  If you know how much torque your engine puts out and if you know your first gear ratio and you know your rear end ratio, multiplying these three numbers together should give your torque at the rear wheel.

i.e. 260 (torque expected from 261) x 2.52 (1st gear in TH350) x 4.11 Rear gear = 2693

What height rear tire do you run?

There has always been talk of that 2693 number or whatever but what is the best number or the average number.

Humour me.

Thanks

Warren


 warren, what is the significance of  this number other than a power to weight ratio, maybe ?



__________________
if your not the lead dog-the view is all the same


PRINCE EDWARD COUNTY, ONT

Status: Offline
Posts: 1001
Date:
Permalink  
 

I really don't know other then I think it could have a bearing on launch. I've seen reference to this or similar equations over the years and maybe it is more significant in lower powered stockers, or modifieds. I was just hoping to see if the number changed radically over similar vehicles, but that probably gets too complicated to track. How would my little altered, for example, turning 14 seconds @ 100 MPH compare to a 55 Chev weighing a whole lot more but running the same? Maybe it was a futile question, but I just wanted to see where it went.

13,244, Holy S**t, that's the number I want for the Bantam.

Thanks
Warren

__________________
You can only make it better


FOXBORO, ONT

Status: Offline
Posts: 1899
Date:
Permalink  
 

wuga wrote:

I really don't know other then I think it could have a bearing on launch. I've seen reference to this or similar equations over the years and maybe it is more significant in lower powered stockers, or modifieds. I was just hoping to see if the number changed radically over similar vehicles, but that probably gets too complicated to track. How would my little altered, for example, turning 14 seconds @ 100 MPH compare to a 55 Chev weighing a whole lot more but running the same? Maybe it was a futile question, but I just wanted to see where it went.

13,244, Holy S**t, that's the number I want for the Bantam.

Thanks
Warren


 that 13,244 is quite a number for sure. my 7886 is on pump gas and a o/d tranny. i can't imagine 13 thou tq with the same drive line as mine on the streets. i'd like to feel that ride in the seat of my pants, dang.



__________________
if your not the lead dog-the view is all the same


PRINCE EDWARD COUNTY, ONT

Status: Offline
Posts: 1001
Date:
Permalink  
 

Rick

Maybe this summer you can take me for a chauffeured ride and demonstrate that 786 ft-lb.

Warren

__________________
You can only make it better


FOXBORO, ONT

Status: Offline
Posts: 1899
Date:
Permalink  
 

wuga wrote:

Rick

Maybe this summer you can take me for a chauffeured ride and demonstrate that 786 ft-lb.

Warren


 yea i don't see a problem with that warren of course with a small gas donation, lol,. i had to-lol.



__________________
if your not the lead dog-the view is all the same
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.



Create your own FREE Forum
Report Abuse
Powered by ActiveBoard