Originally Posted by
LiamT4
Its hard to go on the Scooby example because, as there are many variables (weight, gear ratios, aero ,etc) its hard to compare so look at it this way, If car A and car B are the same weight, have the same gearing and the exact same engine running at the same engine power, but car A is 4wd and car B is 2wd then, when on the move, car B Will be quicker because it loses less energy from the engine to the wheels and it is at the point where the energy is transferred from the car to the road that is actually moving the car forward, this is simple physics. (same goes for why a manual will be quicker than an auto counterpart). The more drive shafts, diffs, tyres, etc, the energy has to be transferred to, the more energy will be lost.
On the question of the numbers today, having now looked myself, then yes I also have questions, just look at the measured and corrected figures and I don't understand whats going on with the numbers, without actually being there I don't know what and why its being corrected, so yes I would agree its that it is odd.
On the maha thing, that dyno is the only one I have seen that gives wildly different whp to the others, but that doesn't mean I disagree with its bhp numbers (frankies car at the time did go like a 310bhp car). That dyno make obviously measures things differently, or uses its software in a different way. Although I do question why sometimes they will measure a car in a completely different gear than other dynos do, but that's not a dyno issue but an operator issue.
I'm sure you'd agree though, that if a dyno has some form of issue measuring the actual power a car is producing, then because the ONLY way it can measure the power is at the wheels, then not only will the whp be wrong, but so will the bhp.
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