- Joined
- Jul 8, 2011
- Messages
- 2,668
Thank you Ken.
Now Rohan, show us your two points on any single curve on that chart! The numbers I am referring to and have always referred to are quoted from you:
"it is commonly quoted that ~10 hp is needed to do 60 mph,and ~32 hp to do 100 mph."
Use a french curve to honor the shapes of the example curves if you want. So where does the 10 hp land, eh Rohan? It does not fit the curves. No. So where do the numbers come from? Citation and basis for numbers?
But this is beside the point as you were trying to reconcile the: "it is commonly quoted that ~10 hp is needed to do 60 mph, and ~32 hp to do 100 mph." with the general equations for power to overcome aero drag which is adequately explained in the Phil Irving Tuning for Speed. Furthermore, Phil Irving points out the example numbers (manifested in the curve that Ken was so kind to post) to begin to calculate total power required factoring in aero drag power as well as such things as rolling resistance and maybe more.
The "commonly quoted that ~10 hp is needed to do 60 mph, and ~32 hp to do 100 mph" numbers are not the aero drag numbers; this had been a source of this confusion on the part of Rohan. That is why I suggested reading up on what Phil Irving , Tuning for Speed presented. The rest has been a Rohan subterfuge to save face.
Now Rohan, show us your two points on any single curve on that chart! The numbers I am referring to and have always referred to are quoted from you:
"it is commonly quoted that ~10 hp is needed to do 60 mph,and ~32 hp to do 100 mph."
Use a french curve to honor the shapes of the example curves if you want. So where does the 10 hp land, eh Rohan? It does not fit the curves. No. So where do the numbers come from? Citation and basis for numbers?
But this is beside the point as you were trying to reconcile the: "it is commonly quoted that ~10 hp is needed to do 60 mph, and ~32 hp to do 100 mph." with the general equations for power to overcome aero drag which is adequately explained in the Phil Irving Tuning for Speed. Furthermore, Phil Irving points out the example numbers (manifested in the curve that Ken was so kind to post) to begin to calculate total power required factoring in aero drag power as well as such things as rolling resistance and maybe more.
The "commonly quoted that ~10 hp is needed to do 60 mph, and ~32 hp to do 100 mph" numbers are not the aero drag numbers; this had been a source of this confusion on the part of Rohan. That is why I suggested reading up on what Phil Irving , Tuning for Speed presented. The rest has been a Rohan subterfuge to save face.