tr7v8 wrote:
sam wrote:
FortyFourSuperTwo wrote:
I was only basing my figures from previoius cars. My Focus made 63BHP at the wheels (a 100BHP 1.6), an old Ka I had made 38BHP (58BHP stock) and that was 2 years old back then. Lowest losses I had was on my last car a Pug 306 GTi-6 which made 142BHP at the wheels and around 167BHP at the crank. Considering the 944 has more potential areas for loss (with it being RWD), that's how I arrived at my figure. I would guestimate that the S2 probably makes around 150ish at the wheels, with it being quicker than the 306 was, and shifting better despite a 100kg penalty over the 306.
So why do you think rear wheel drive is less efficient??
Exactly it shouldn't be, although from my experience tyres make a big difference as well.
It shouldn't be but theory doesn't always plan out as it should. I'd say if there is a difference it would be down to more things in the drivetrain link. FWD car has a gearbox/Transaxle, then driveshafts. Porsche has a torque tube along the way, more bearings etc. Other RWD have propshafts. This will also all add on a little weight too. Theory also says an auto car shouldn't be much slower than a manual but again the reality IME is quite different.
Ask old car owners (say an MGB owner) about driving a 3 bearing engined car or a 5 bearing item. 9 times out of ten they will say that the 3 bearing item is keen to rev (that's not to say I'd choose the lower bearing item).
I'll agree on tyres. I lost a second on my 306 going from Courier Ditchfinders to Toyo T1-Rs (From a hard to better 16.3 to 15.4 and decreasing on the 1/4 mile).
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