Mustang Dyno-Bone Stock-2005 6MT
#16
#17
#18
Now that's odd. I dyno'd on a Mustang dyno and hit about 212 whp and 185 ft-lbs, which is similar to other numbers G35s got on the same dyno. This matched basically exactly with road dyno calculations I made from my car accelerating on the street. I'd question those numbers you got, or find out if there are any weird additional factors being added in.
#19
Originally Posted by MechEE
Now that's odd. I dyno'd on a Mustang dyno and hit about 212 whp and 185 ft-lbs, which is similar to other numbers G35s got on the same dyno. This matched basically exactly with road dyno calculations I made from my car accelerating on the street. I'd question those numbers you got, or find out if there are any weird additional factors being added in.
#20
Question what?
A dyno is like a scale. It could have said I have 500 HP or 100 HP. As long as it’s consistent I’ll know if the MREV actually works. Remember, the other G (owned by a Curry’s employee) recently dyno’d within 5 HP of mine.
I’ll ask the guy at Curry’s what he attributes the 220/266 difference to when I go back in a couple of days.
But don’t think I will stop telling people that my G puts down 261 at the wheels.
A dyno is like a scale. It could have said I have 500 HP or 100 HP. As long as it’s consistent I’ll know if the MREV actually works. Remember, the other G (owned by a Curry’s employee) recently dyno’d within 5 HP of mine.
I’ll ask the guy at Curry’s what he attributes the 220/266 difference to when I go back in a couple of days.
But don’t think I will stop telling people that my G puts down 261 at the wheels.
#22
Originally Posted by ResIpsa
Question what?
A dyno is like a scale. It could have said I have 500 HP or 100 HP. As long as it’s consistent I’ll know if the MREV actually works. Remember, the other G (owned by a Curry’s employee) recently dyno’d within 5 HP of mine.
I’ll ask the guy at Curry’s what he attributes the 220/266 difference to when I go back in a couple of days.
But don’t think I will stop telling people that my G puts down 261 at the wheels.
A dyno is like a scale. It could have said I have 500 HP or 100 HP. As long as it’s consistent I’ll know if the MREV actually works. Remember, the other G (owned by a Curry’s employee) recently dyno’d within 5 HP of mine.
I’ll ask the guy at Curry’s what he attributes the 220/266 difference to when I go back in a couple of days.
But don’t think I will stop telling people that my G puts down 261 at the wheels.
#24
#27
#28
#30
Originally Posted by MechEE
Log vehicle speed versus time on a street run and back-calculate power if you want to know what your car actually puts out at the wheels. Unfortunately you need special tools (like Cipher) to do so.
Please, elucidate, will you? What exactly do you mean by "log vehicle speed versus time"? Should a run be performed in a single gear? If so, which gear? If not, then how does one account for the elapsed time in shifting gears? Is there a way to log when the car is fully in gear, or not?
Also, just how accurate is this means of measurement? Do you have a weather station recording wind direction and speed? How would a tail wind or head wind affect the measurement? How would tire pressure affect measurement? Or what about wheel size and weight, in combination with tire size and weight? If one increases the diameter and weight of his drive wheels, by say 50%, would this not lengthen the time required to cover the same distance? But technically, the amount of power the car is putting "to the wheels" would be unchanged, correct?
My point here is that even your *suggestion* is merely an approximation, just like using any type of dyno. Like you said, your way of doing things requires "special tools (like Cipher)". Hitting a dyno for 50 some-odd bucks, for an approximation, doesn't seem too bad to me.