400 pound weight loss??

[thePill]

F1 6 Link IRS is designed that way more so for the ground clearance. The control arms are usually designed in a true double wishbone, with long, slender arms.

The farther out the mounting points are, the more UNEQUAL length control arms need to be used. This is where Short-Long Arm IRS came from... OEM vehicles required a much taller ride height, this means mounting the control arms/links out towards the tire.

In order for the wheel to move up/down on the axis smoothly , without changing camber,cast or toe, the upper arm needs to be shorter so the wheel doesn't travel on an arc... and it is in SLA... and this is also where the problems start. Many bad habits are demonstrated using this geometry. You also need to consider the suspension travel in an SLA IRS vs. a Double Wishbone with equal length arms. The SLA is far superior for everyday.

The ILIRS eliminates the upper control arm, this makes a lot of what BMW, MB and Ford is doing possible.

Sponsored

 

[Diver Down]

Listen to the expert

In regards to getting too granular and trying to weigh each 2015 mustang part before you know what's actually going to be in the car I have a quote from an auto parts expert that may apply here:

"You can get a good look at a T-bone by sticking your head up a bull's ass, but wouldn't you rather take a butcher's word for it?"

 

[GTsquid]

Lol nice one and I assume you're the butcher?

U know theres been a lot of so called butchers weighing in on this, no pun intended...

 

[WestRace]

... but if its mounted inboard on a rubber-mounted subframe, the flex of the bushings could easily more than offset this strength.

But the flexing will be on the rubber bushing and not on the actual chassis right? So when driving, you probably don't feel the body flex but more like the slight swaying sensation from the subframe only?

 

[DeepImpactBlue2015EB]

400lbs weight loss lmao Ford was full of shit

 

[LHousePhoto]

Shave 400 pounds out of a Mustang GT to make a Mach 1?

Lighter wheels, smaller than GT PP brakes (remember, Mach 1 is for drag racing, not road courses) Removal of any electrics from the seats, rear seat delete, solid axle (again, drag strip) and compare it to a GT Premium Convertible with every option.

 

[K-Roll302]

I wonder if there'll be any sort of actual weight loss at all by the next refresh for all models, not just special versions...

 

[OppoLock]

I wonder if there'll be any sort of actual weight loss at all by the next refresh for all models, not just special versions...

That wouldn't make sense. It would require extensive reconstruction or investing in more widespread use of lightweight material. Both = $$$ which goes against the whole idea of the Mustang being a good bang-for-buck proposition.

 

[BMR Tech]

I have shaved 300~lbs from my 2015 GT Auto.

Just saying. ;)

 

[K-Roll302]

I have shaved 300~lbs from my 2015 GT Auto.

Just saying. ;)

How'd you manage that??

 

[OppoLock]

How'd you manage that??

engine delete mod

 

[BMR Tech]

How'd you manage that??

Replacing heavier OEM parts, with lighter aftermarket....and removing some stuff I do not need.

Here is a good thread with weights, to give you an idea.

http://www.mustang6g.com/forums/showthread.php?t=15864

 

[BMR Tech]

engine delete mod

LOL!!!

That's hilarious. :cheers:

 

[BmacIL]

I'm willing to bet that the main reason for the more central mounting point on open wheel cars has more to do with alignment change then it does from chassis stiffness although I'm sure the reduction in the size of the mounting area does reduce weight. The longer arms need less dramatic angles to keep the tires flat to the ground. If you look at F1 cars, the arms are damn near parallel. The combination of high springs, aero and long arms means they can ditch a lot of the angle required to get an SLA setup to gain negative camber.

This is [mostly] correct. Longer swing arms reduces roll center migration, which means you can better design and tune your roll control system (springs, dampers, anti-roll bars) to something more consistent. Longer is always better, but well matched front and rear is the most important for consistent handling. Packaging will dictate how long they'll be for a given platform.

The relative angle between upper and lower arms is the primary geometry that changes how much camber is gained as the car rolls. Length of the arms also has an effect, but it is much smaller.

 

[Grimace427]

400lbs weight loss lmao Ford was full of shit

Ford never claimed a 400lb weight loss.

Sponsored