How do you calculate torque/power at the wheels?

How do you calculate torque/power at the wheels?

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dr.pepper

Original Poster:

634 posts

194 months

Monday 10th November 2008
quotequote all
As per the topic title, i am trying to figure out how to calculate the actual amount of torque a car produces at the wheels.

One of the reasons i am interested in this is because of the endless Turbo diesel and Petrol comparisons. There's too much talk about power/torque at the engine, rather than the actual power at the wheels (after drivetrain losses).

I understand that it is something along the lines of the gear ratio's and the peak torque *5252?

dr.pepper

Original Poster:

634 posts

194 months

Monday 10th November 2008
quotequote all
Thanks for the input folks smile

dr.pepper

Original Poster:

634 posts

194 months

Monday 10th November 2008
quotequote all
ridds said:
dr.pepper said:
As per the topic title, i am trying to figure out how to calculate the actual amount of torque a car produces at the wheels.

One of the reasons i am interested in this is because of the endless Turbo diesel and Petrol comparisons. There's too much talk about power/torque at the engine, rather than the actual power at the wheels (after drivetrain losses).

I understand that it is something along the lines of the gear ratio's and the peak torque *5252?
Torque a the wheels? What gear? This will have MASSIVE effect on your answer.
Let's say..........3rd gear?