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  #1 (permalink)  
Old Dec 21st, 2004, 09:19 PM
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Best RPM?

hello guys, i have a question which is a good question for me :-D, what is the best RPM to lunch a cooper S from a stop?
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Old Dec 21st, 2004, 10:12 PM
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i believe the torque peak on the S is at 4000 RPMs. so i would guess 4000 RPMs.
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Old Dec 22nd, 2004, 12:15 AM
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Well unless you want to give your dealership plenty of practice at replacing clutches, I'd suggest a more moderate approach. The MCS can launch at pretty much any rpm depending on how fast you want to go. The heavy flywheel allows for a lower rpm so regular driving can see sub 1200 rpm launches. It likes to buck a bit when you get the clutch all the way out so increasing the throttle a bit while your letting out really helps (to keep the rpm the same throughout the launch).
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Old Dec 22nd, 2004, 12:39 AM
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I'd say 2500-3000,just when the powerband beings to pick up.
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Old Dec 22nd, 2004, 12:43 AM
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kapps is right
give the throttle a tad to keep the rpm same

i was using my MSC driving habbit on a Honda and its definetly different...........Hondas RPM drops and raises WAAAAY faster than the MSC, therefore increasing a bit of throttle while releasing the clutch is not a good idea (i was getting jerks all the way)

so if you want a car that can launch REALLy fast.........i guess MSC is not your choice
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Old Dec 22nd, 2004, 01:28 AM
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Quote: Originally Posted by tai10
kapps is right
give the throttle a tad to keep the rpm same

i was using my MSC driving habbit on a Honda and its definetly different...........Hondas RPM drops and raises WAAAAY faster than the MSC, therefore increasing a bit of throttle while releasing the clutch is not a good idea (i was getting jerks all the way)

so if you want a car that can launch REALLy fast.........i guess MSC is not your choice

...I also drive a Honda Insight and it took me forever to learn to clutch the MINI smoothly. In the Insight, rev to 2k. smoothly let clutch out. The MCS is quite a bit different.
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Old Dec 23rd, 2004, 02:27 AM
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^^ ool

yeah man.............we crossed path hahah ....
but yeah definetly agree with what you said what the MSC in idle , first to second gear ol
and do you find everythign literally harder? even the stick seems harder and slower than a Honda
i was driving my friends accord and i was shifting with a flick of my finger and on my MSC i actually had to use a bit more pressure LMAO
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Old Dec 23rd, 2004, 06:19 AM
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Quote: Originally Posted by tai10
^^ ool

yeah man.............we crossed path hahah ....
but yeah definetly agree with what you said what the MSC in idle , first to second gear ol
and do you find everythign literally harder? even the stick seems harder and slower than a Honda
i was driving my friends accord and i was shifting with a flick of my finger and on my MSC i actually had to use a bit more pressure LMAO


I upshift my S without the clutch and little effort. Quickest way to launch means an RPM level that will not spin the wheels.....that is roughly 2000 RPM.........
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Old Dec 23rd, 2004, 03:31 PM
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I tend to use right around 2000 RPM. I tried doing at lower RPMs but then the engine does that little shutter sound like it wants to stall even though it's not near the stall point. SO I figured I'll stick with ~2000 so I don't have to hear the noise. Not to mention it just gets me that much closer to the sweet sweet sound of a supercharger.
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Old Dec 25th, 2004, 10:25 PM
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i tried launching my MCS between 2500- 3000 the tires were spining 1st gear and started to move when i shifted to 2nd!! allthough my tires are in good shape. I have a raced that sexy lady who drives a VW bettle turbo charged and she had me on 1st gear but after that she was looking at my tailights . ooh forgot to mention that i raced a honda Accord V6 and i was happy beating him up didnt race him from a 0 though. i'll keep on trying to figure out best RPM
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Old Dec 27th, 2004, 05:35 PM
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I have a G-tech pro accelerometer that I just started playing with, but I haven't played too much yet. I tried one 0-60 run with a 4000 RPM launch, but it just smoked the tires, BIG TIME. Almost spun the tires all the way to second gear, had to release some throttle to get the car moving. Still, 0-60 time came in at 7.08 seconds on a bone stock car with all-season run-flats, so the time actually wasn't too bad.

When I play a little more, I'll let you know what RPM launch nets me the best time. This will of course vary based on the level of grip both from the surface and from the tires, so one can't really say what the best RPM is, as it will be different for everyone based on the road and tires.

2004 MCS: BRG/W -- Sport pkg, H/K, Sunroof, white bonnet stripes
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Old Dec 27th, 2004, 06:00 PM
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Quote:
This will of course vary based on the level of grip both from the surface and from the tires, so one can't really say what the best RPM is, as it will be different for everyone based on the road and tires.

I agree - the weather, the tires, the surface, etc will all effect your launch. Between 2000 and 2500 RPM is good for most situations, IMHO.

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Old Dec 28th, 2004, 12:15 PM
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Quote: Originally Posted by Hammer
I agree - the weather, the tires, the surface, etc will all effect your launch. Between 2000 and 2500 RPM is good for most situations, IMHO.

i agree to that as well, but i think 2000-2500 RPM in colorado is not enough because of the elevation in here ?? weather and surface all dry and tires are all season 17"s.
By the way 7.08 is a good time. keep me updated. Thanks.
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Old Dec 28th, 2004, 03:51 PM
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Quote: Originally Posted by grey S
i agree to that as well, but i think 2000-2500 RPM in colorado is not enough because of the elevation in here ?? weather and surface all dry and tires are all season 17"s.
By the way 7.08 is a good time. keep me updated. Thanks.

You're right in the fact that elevation would make a difference, as a given RPM (say 2250) that may work at sea level to launch the car may bog the car down at 6000 feet, less power after all. The key is to launch it without smoking the tires or bogging it down, somewhere in between.

Although I am starting to get convinced that some wheelspin is best to get the S moving due to the heavy flywheel and wheels (S-Lites and runflats -- 55lbs each corner ). It just seems that in my car if I try to launch with no wheelspin it takes forever to get into the power band and then you've wasted more time than if you had just spun the wheels a bit to get the RPM up.

2004 MCS: BRG/W -- Sport pkg, H/K, Sunroof, white bonnet stripes
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Old Dec 28th, 2004, 04:59 PM
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Quote: Originally Posted by MINIGT50
You're right in the fact that elevation would make a difference, as a given RPM (say 2250) that may work at sea level to launch the car may bog the car down at 6000 feet, less power after all. The key is to launch it without smoking the tires or bogging it down, somewhere in between.

Although I am starting to get convinced that some wheelspin is best to get the S moving due to the heavy flywheel and wheels (S-Lites and runflats -- 55lbs each corner ). It just seems that in my car if I try to launch with no wheelspin it takes forever to get into the power band and then you've wasted more time than if you had just spun the wheels a bit to get the RPM up.

Altitude should make no difference to the power output as it is a supercharged engine and will naturally compensate for variations in ambient pressure.

Motor on, Dudes and Dudettes!!!
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'02 MCS DS/W (retired)
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