The difference between base and an R?

[Hack]

Probably been said already, but I would prefer the R except I wouldn't track it enough to get the full value, and whats the point of paying extra for the weight loss, only to gain it from the tech package.

The point is that carbon fiber wheels are potentially a game changer. You or I may not be able to fully utilize the difference, but I bet even I would be able to notice a handling and acceleration difference with the loss of so much rotating mass.

The rest of the weight loss is minor and probably will not be noticeable, I agree.

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[BoomBoy]

Probably been said already, but I would prefer the R except I wouldn't track it enough to get the full value, and whats the point of paying extra for the weight loss, only to gain it from the tech package.

You're not paying for the weight loss. You're paying for the carbon fiber wheels and sticker tires.

 

[chopsui]

The specs on the Magneride for the GT350 are Gen 2. As the dampening and adjustments are readjusted every 8 milliseconds to the driving conditions. Whereas the Chevy implemented Gen 3 system adjusts every half millisecond to driving conditions.

Do you have a source for this? Everything I can find says that Gen2 MR was greater than 20ms and Gen3 is less than 10ms. I can't find anything that says a vette is only .5ms.

BTW, my research says Gen3 came out back in ~2009. Seems far fetched that Ford (or anyone else) would use something older than that in a new model.

EDIT: From http://www.chevrolet.com/2014-corvette-stingray.html

Damping adapts every 10-15 milliseconds...

Looks to me like if anything, the GT350 has slightly better MR dampers. Which would make sense because it's newer. If I had to guess, the actual hardware is the same and it's just slightly different/updated firmware.

 

[Trackaholic]

Do you have a source for this? Everything I can find says that Gen2 MR was greater than 20ms and Gen3 is less than 10ms. I can't find anything that says a vette is only .5ms.

BTW, my research says Gen3 came out back in ~2009. Seems far fetched that Ford (or anyone else) would use something older than that in a new model.

EDIT: From http://www.chevrolet.com/2014-corvette-stingray.html



Looks to me like if anything, the GT350 has slightly better MR dampers. Which would make sense because it's newer. If I had to guess, the actual hardware is the same and it's just slightly different/updated firmware.

I know there was at least one hardware change: from a single coild to a dual coil system, which means less inductance and a faster reaction time. I know the C7 made a big deal about going to the dual coil system, so I'm guessing that is what Ford is using as well.

-T

 

[chopsui]

I know there was at least one hardware change: from a single coild to a dual coil system, which means less inductance and a faster reaction time. I know the C7 made a big deal about going to the dual coil system, so I'm guessing that is what Ford is using as well.

-T

Yep, that was the big change for Gen3 which allowed them to go from ~20ms to ~10ms. I'd imagine that any new vehicles will use at least Gen3 from here on out.

 

[matrix243]

You're not paying for the weight loss. You're paying for the carbon fiber wheels and sticker tires.

Holy hell. You're right. Didn't realize that $13k is actually a bargain for those wheels.

 

[eric n]

I almost certainly would rub those amazing CF wheels on a curb sometime in the first 6 months and would then cry like a little baby. Perhaps also soil my pants....again, like a little baby.

Additionally I like the back seat, no matter how small they are.

 

[BoomBoy]

I almost certainly would rub those amazing CF wheels on a curb sometime in the first 6 months and would then cry like a little baby. Perhaps also soil my pants....again, like a little baby.

Additionally I like the back seat, no matter how small they are.

I already curbed my PP wheel. I'd be too scared to drive on CF wheels. :(

 

[BaylorCorvette]

Keep the CF wheels for track wheels and the buy a set of aluminum wheels for daily/street driving.

 

[Cruzinaround]

Actually, Ford now says every 7 milliseconds. I'm sure my butt dyno will be able to feel that.

And the Corvette website says the Magnetic Ride Control can adjust every 15 milliseconds.

I know BWI (who now own the technology) and even GM (that now licenses the tech they formerly owned and invented) had white papers out with their Twin coil MRC adjusting within .25 miliseconds or less. So this may be dependent on the ECU programming or the trim level of the car in question.

But, I'll add that the true racer might opt to forgo the MRC in favor of the DSSV. So a base GT350 would sound like a better fit for this enthusiast. You can easily strip weight off the GT 350 base model and bump up the suspension and even find the final result being lighter and even better planted than the "R" with the MRC for track duty. I believe some poster's here have eluded to not wanting the MRC, perhaps for this same reasoning. Its like how a true racer opts for a Coupe as oppsed to the Convertible. Each has its own advantages.

In any case I can't find the TID's for this where it clearly stated the GM implementation was a later variant of MRC. When I do I'll post it up.

I agree however...coming from an s197 platform where there was nothing like this before....8ms or 7ms intervals of adjustment would definitely be felt. Regardless. But, if BWI claims are correct....then the adjustments potentially can be much quicker.

 

[krt22]

With latency times that low, its the whole system. To have signals/sensors update that fast is one thing, for the actual dampers to adjust and have the sensors/control loop react to them all in .25ms is a whole other ball game

 

[Cruzinaround]

^Its the Gen3 dual coil MRC dampers that are currently rated for .25 Ms adjustments by BWI not the ECU's which are specific to each manufacturer. The ECU should be capable of faster than .25 ms or it is governed otherwise for whatever reason not to perform at its fastest.

 

[krt22]

Again, what each device is "capable of" and what the actual system operates at are two very different things. There is still latency in the communication between the devices, computation time, etc.

At .25 or 10ms, the dampers themselves may not be the limiting factor. BUt to say 7-8ms adjustments would "definitely be felt" is laughable at best given human reaction times are on the order of 250ms. And 250ms is for a single input, so that is 250ms to sense something, then another 250ms to actually react to it.

 

[Cruzinaround]

Okay I get where you going.... If its a sensory perception in a literal sense rather than just a claim in anticipation of something better than we have now.

Well then I would think as experienced drivers of a Mustang the perception of a more planted and stable ride compared to the traditional damping we've all grown accustomed to as drivers of Mustangs should be a quantifiable feeling in the seat of your pants when the car is taken beyond the limits we have grown accustomed to. Regardless of how slow our chemical synapses are in comparison to the more instantaneous transfer of data that modern computers (ECU's) are capable of.

It's not like the data is traveling over the internet between the ECU and the MRC's. The Latency is so low its not worth quantifying. Except where it comes to a seat of your pants experience after having driven without the luxury of this tech for such a long time then suddenly having it. That is quantifiable and translates typically to the fun factor.

 

[krt22]

that is the thing, it still has to travel over an internal "internet" between the dampers and ECU (which them may or may not need to communicate with other onboard devices). And if you are talking about .25ms response times, even internal latency times are quantifiable and 100% relevant. There is digital communication, A/D conversions, signal poling, etc, which all can easily get you into the hundreds of milliseconds range.

My simple point was, if its .25 or 7ms, its far faster than any driver will really be able to sense or measure (even pros).Now ford claims the suspension can adapt "thousands of times per second, which by default means <1ms of response time. But that isnt likely the limiting or driving factor for the increased performance. Just the simple fact it has adjustable damping and no longer has a solid rear axle change things immensely.

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