View Single Post
  #270   Report Post  
Posted to uk.d-i-y
Roger Mills[_2_] Roger Mills[_2_] is offline
external usenet poster
 
Posts: 4,120
Default The physics of cars - a question sequence.

On 08/04/2016 23:57, Dave Plowman (News) wrote:
In ,
wrote:

Torque is irrelevant to performance.


The most ridiculous statement of the thread (so far).


And Vir is the one who started this nonsense months ago. But won't be told.


Model 0-62 peak power peak torque
520D 7.9 140 400
520i 7.9 135 270
528i 6.2 180 350


Now explain how the 528i with _less_ torque than the 520D is so much
faster. And the two 520s match.


Well, the two 520s are Diesels, and don't have the RPM range that the
Petrol 528 has; they are governed to 4000 RPM.


What any car's 0-60 time may be is totally irrelevant to where the maximum
acceleration occurs anyway. Unless comparing apples to oranges.


The fact remains that a car's power to weight ratio (*not* engine torque
to weight ratio) is a pretty good indicator of accelerative performance.
--
Cheers,
Roger
____________
Please reply to Newsgroup. Whilst email address is valid, it is seldom
checked.