360 at 150MPH
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I had my brother in the car who said later he had three near ... experiences. I do this regularly when 280 freeway is somewhat drivable w/o a lot of traffic. By the way, the only way to drive the 360 is at the redline. It redlines so quickly that keeps inviting you to do it, again and again...
Cheers,
Cheers,
I am sure one can drive it at that speed in 5th gear around 8200 RPM in a steady state condition. You may as well use the data and let us know what you are trying to do; it may be of interest to other 360Modena owners. Unless someone in Europe replies, I am not aware of any road that you can drive at 150 MPH at a steady state condition more than a few seconds before hitting traffic or hauled away for a visit to county jail. I have also been on the racetrack and there is no way one can get the 360 at 150 MPH in a steady state condition. I am curious as what it is you are trying to calculate and interested to see if I can help if the results are being shared.
Cheers,
Cheers,
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For a manual transmission, the rpm and gear combo will be the same whether accelerating, steady-speed, or decelerating, so 150MPH / 5th / 8200 are the numbers.
If you are calculating aero drag & tyre friction, etc, you will need to know how much power is put out by the engine at 8200 rpm to hold a steady speed. If the car can go faster than 150 then it won't be at full throttle at a steady 150, and you will be "under" the normal (full throttle) dyno power curve.
I think you could only do the calcs using either
(1) full-trottle acceleration times between say 100 & 150 (difficult), or
(2) top speed (= steady, full throttle). This should be much easier.
If you are calculating aero drag & tyre friction, etc, you will need to know how much power is put out by the engine at 8200 rpm to hold a steady speed. If the car can go faster than 150 then it won't be at full throttle at a steady 150, and you will be "under" the normal (full throttle) dyno power curve.
I think you could only do the calcs using either
(1) full-trottle acceleration times between say 100 & 150 (difficult), or
(2) top speed (= steady, full throttle). This should be much easier.
Reaching 150MPH at 8000+ RPM after shifting from 4th happens in a matter of seconds and the problem is that the car gets to traffic and everything else on the road so fast that is hard to pay close attention to the speedometer and tach. One needs to video tape the event. Then car reaches 157 or so MPH at 8500 RPM before shifting to 6th. This doesn’t happen very often because the car needs a much longer run than let’s say 145MPH. 145MPH happens all the time in the 360. The speed between 145 and 150 can not be differentiated only in 5MPH.
Cheers,
Cheers,
I know the aero drag of the 360 at top speed (approx 180 mph). By calculations (torque at red line, overall gear ratio, driveline efficiency and tire diameter) the amount of total force the 360 has to over come this aero drag can be calculated. The difference between the two has to be equal to the mechanical drag (sometimes called rolling resistance).
The aero drag at 150 mph can be calculated from its value at 180 mph. If I knew the rpm and gear required for a steady 150 mph, then I could calculate the mechanical drag at that speed. I am trying to find out how mechanical drag is related to an increase in speed.
The aero drag at 150 mph can be calculated from its value at 180 mph. If I knew the rpm and gear required for a steady 150 mph, then I could calculate the mechanical drag at that speed. I am trying to find out how mechanical drag is related to an increase in speed.
I posted a file yesterday containing HP/Torque vs. RPM from my car. The fresh data looks different (max HP/Torque) from my earlier post. I think you should use that one.
I tried again 150MPH in 5th gear at about 8000 RPM (give or take a few RPM).
By the way, the Coupe's top speed is rated at 189MPH (estimated) at 8500 RPM and the Spider at 180MPH.
Let us know what you find.
Cheers,
I tried again 150MPH in 5th gear at about 8000 RPM (give or take a few RPM).
By the way, the Coupe's top speed is rated at 189MPH (estimated) at 8500 RPM and the Spider at 180MPH.
Let us know what you find.
Cheers,
Thank you for the test driving!!! I only wish I could do the same. I will use your latest graph. BTW, the one thing I am trying to prove is that the coupe has a top speed of 189. If you have any documentation, please let me know. I’ve been told, the official Ferrari site lists it at 183, and several car mags have only been able to find 175mph.
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You're a brave man, 4i2fly - putting your body on the line in the name of science! 
tmeranda, aren't you going to need to know what power is being put out at 150MPH? At any steady velocity below top speed the engine won't be putting out max power but will be partly throttled-back, and so the 8000rpm output at 150MPH won't match the dyno curve. I'm not sure you can get this data easily (without a wind-tunnel!)
tmeranda, aren't you going to need to know what power is being put out at 150MPH? At any steady velocity below top speed the engine won't be putting out max power but will be partly throttled-back, and so the 8000rpm output at 150MPH won't match the dyno curve. I'm not sure you can get this data easily (without a wind-tunnel!)
I love to learn about this car. I have read and experimented with almost everything 360Modena related. I can tell you that my gut feeling is that 173 MPH is hardly the top speed for this car. Although never had theopen road to test the top speed. Road & Track, August 1999, 2000 Ferrari 360 Modena road test in Europe! It lists the top speed at 189 MPH (8500 RPM estimate). Also, Road & Track, July 2001, Ferrari 360 Spider road test lists top speed at 180 MPH (8500 RPM estimate). I can also tell you that I have gone through the gears (mine is a stick) and noticed almost identical speed and RPM with the 1999 article with the exception of 6th at 189 MPH. The fastest I have ever driven the car 167MPH. See attached JPG for reference.
Cheers,
Cheers,
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What's the reason for the diff rpm-vs-mph figures in the 2 charts? They must be running different tyres, I guess, as overall gearing looks to be the same on each. :nuts:[/url]
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thats odd. same gears same tire size. different results... i dont think weigh would have much to do with the results only if both cars are using the same exact clutch and they are about 4 or 7 years old or something like that to that extent. or maybe one car had new tires on and the other had very very bald tires on.
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Ed-
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