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10-20-2007, 05:38 PM | #89 | |
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Sounds exciting. Thanks. |
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10-20-2007, 07:46 PM | #90 | |
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Simple
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By the way the k of the suspension aseembly is not close to the k of the spring. The multi-link lever system creates a significant mechanical advantage. |
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10-20-2007, 08:21 PM | #91 | |
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10-20-2007, 08:56 PM | #92 |
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10-20-2007, 10:05 PM | #93 |
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Elitist? well then yes I am. Like Steve Dinan referred to in Roundel, me not likey those who puff up the weight, price and complexity of the M3 with ridiculous electronic do dad doos. If you want comfort and ergo friendly options, buy a Lexus, they do a much better job of it. And their doo dads actually still works past the 4 year warranty period. ISF, your cup of tea Mr. Stahlgrau?
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10-20-2007, 10:12 PM | #94 |
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This may be hard to believe but it doesn't actually add horsepower. However, all other things being equal, I will be able to run the 1/4 mile .0000003 seconds quicker than you becuase Speed cloth as the name suggests is a teeny weeny bit "speedier" and lighter than your luxurious leather.
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10-21-2007, 12:31 AM | #95 | |
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Sensible. Thanks for repeating what I said, too. Imitation is the sincerest form of flattery. |
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10-21-2007, 01:41 AM | #96 | |
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10-21-2007, 03:19 AM | #98 | |
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Yes and no
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Futhermore, M cars do not need a single opton to hit the track on a regular basis. Can you name an option on the new M3 "required" or that makes it faster on the track with a skilled driver (other than M-DCT, which is not available yet and Cup+ on 19s - likely only available in EU)? |
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10-21-2007, 03:40 AM | #99 | |
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10-21-2007, 07:51 AM | #100 | |
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10-21-2007, 10:01 AM | #101 |
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Throttle response is merely the mapping of the pedal. A true heel-to-toe enthusiast shouldn't have problems pushing the gas pedal harder.
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10-21-2007, 11:07 AM | #102 | |
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"A separate throttle butterfly for each cylinder - eight in this instance - is a feature adapted from BMW M's racing heritage and provides immediate reaction to the gas pedal at all times. Two stepper motors operate the four throttle butterflies on each row of cylinders, giving the engine a particularly sensitive response at low speeds together with an immediate reaction whenever the driver presses down the accelerator for extra power and performance." Are you sure the different throttle response settings do not have something to do with how the motors are controlled and therefore respond to driver input--meaning there might be more than just a linear mapping in between the two? It is possible that there is a response rate that cannot be achieved no matter how hard you push on the pedal unless the system is in the sport plus setting. This would be good to know because if you are right, MDrive simply boils down to the M button (as long as you are okay with taking DSC offline), and I'd probably give up the M button in order to avoid the double hump. |
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10-21-2007, 02:46 PM | #103 | |
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Throttle response
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10-21-2007, 03:09 PM | #104 | |
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10-21-2007, 03:50 PM | #105 |
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iDrive / MDrive truly required for Steering Map Setting?
I've read the entire thread, and are folks really sure that iDrive / MDrive is required to adjust the Steering Settings? The formal Sedan press release posted as a sticky seems to suggest that iDrive/MDrive are required only for saving and recalling of overall preferred settings:
"Servotronic steering with two manually adjustable control maps Rear-wheel drive keeps the rack-and-pinion steering of the BMW M3 Sedan free of drive forces. A further enhancement is hydraulic Servotronic power assistance controlling steering forces as a function of road speed. There is also a choice of two different control maps activated through normal and sport modes with a console-mounted button." and "MDrive personalizes the driving characteristics of the new BMW M3 The new M3 provides several standard and optional driver-controlled systems to tailor the driving characteristics to a driver's personal preferences. The driver can choose, with conveniently located buttons: • DSC on or off (for a very competent, performance-oriented driver) • EDC in Sport, Normal or Comfort modes • Servotronic in Sport or Comfort modes • Throttle response either direct/sporting or comfort oriented A push of the MDrive button on the steering wheel can instantaneously activate the above driver-selectable configurations, turning the new BMW M3 into his or her personalized Ultimate Driving Machine. " Can anyone without iDrive/MDrive confirm one way or the other? Having the heavier steering would be strongly desired by most, I'm hoping this is available without having to spend money on unnecessary electronics like iDrive/Nav... |
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10-21-2007, 04:17 PM | #106 |
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10-21-2007, 04:21 PM | #107 |
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Mostly when you press power on the car or Sport on the E46 M3, ETC. Throttle response just makes the car "feel more sporty"
Even though it will feel a lot faster and have a higher kick off... The car is performing just the same
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10-21-2007, 04:29 PM | #108 | ||
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10-21-2007, 04:47 PM | #109 | |
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On we go
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I always have and still do stick to my guns that rotor size, caliper size, the presense of a floating rotor and brake cooling are MORE important than the number of pistons (or the color of the caliper...) |
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10-21-2007, 05:05 PM | #110 | |
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1) Line pressure can only be increased by either increasing the mechanical pedal ratio or by decreasing the master cylinder diameter. In either case the pedal travel will be increased. 2) Clamping force can only be increased either by increasing the line pressure or by increasing the diameter of the caliper piston(s). Increasing the size of the pads will not increase clamping force. Any increase in caliper piston area alone will be accompanied by an increase in pedal travel. The effectiveness of a caliper is also affected by the stiffness of the caliper body and its mountings. It is therefore possible to reduce piston size while increasing caliper stiffness and realize a net increase in clamping force applied. This would typically improve pedal feel. 3) Only increasing the effective radius of the disc, the caliper piston area, the line pressure, or the coefficient of friction can increase brake torque. Increasing the pad area will decrease pad wear and improve the fade characteristics of the pads but it will not increase the brake torque. --StopTech It is true that multiple piston calipers do not necessarily offer more clamping force than single pistons, but might offer more piston area making this possible.
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