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Next gen Wrangler may loose solid axles

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1.2K views 8 replies 8 participants last post by  faulco  
#1 ·
I hadn't realized solid axles weighed more. Will be interesting to see the outcome and if independent suspension can compete with live axles in serious off-road applications.

From Automotive News

There’s arguably no single vehicle as important to the identity of any particular brand more than the Wrangler is for Jeep. The Jeep Wrangler IS Jeep and it can trace its history back more than 70 years to World War II when the first GPW started rolling off the production line for the military. With tougher fuel economy standards, the next-gen Jeep Wrangler — set to arrive in 2016 — could be the most difficult update yet, and according to Jeep chief Mike Manley, there’s a chance the Wrangler’s beloved solid axles may not live on to the next generation.

Manley, in a recent interview with Automotive News, told the outlet that he couldn’t promise that the Wrangler’s solid axle and coil-link suspension would live on to the next-generation. “We’re already in an environment where it’s a challenge to produce a vehicle in that way, and it’s going to get harder,” Manley said. “What I can tell you is that the vehicle is absolutely fundamental to our DNA, and it’s going to become progressively harder to make sure that the vehicle meets all of the standards that are required for it.”

Development of the next-generation Jeep Wrangler began earlier this year, with the brand looking for ways to reduce the SUV’s weight. With a lower curb weight and some electronic aids, the Wrangler could conceivably be more fuel-efficient and just as capable as it’s ever been.

Since updating the Jeep Wrangler is such an important project, Manley knows the pressures on: “Frankly, I know that if I screw up the next Wrangler, then I probably wouldn’t be able to leave my house for a long time.”
 
#5 ·
It's clear from the article that jeep and the press know that the wrangler is the halo model for the jeep brand and turning the wrangler into something soft would damage the whole jeep brand.

I'm not sure what standards the jeep bloke is saying are challenging to meet with live axles. Could be cost, weight / fuel economy, stability, etc.

Maybe Jeep will come up with robust long travel independent suspension, adjustable suspension height and some sort of e diffs. Hard to say what they will do but I doubt it will be whimpy.
 
#6 ·
Build the body structure out of aluminium rather than steel

Door skins in carbon fibre or plastic

Guards and other body panels in a metal - ceramic honey comb or plastic.

Fuel tank out of carbon fibre.

Slant the windscreen back a few degrees and lower the top, drop the seats between the chassis rails to maintain headroom.

Remove glass for scratchproof perspex

Alloy engine block and axles


Many things there to touch weight wise before the live axle / separate chassis layout is considered in my opinion.
 
#8 ·
From what I read, the main reason is to reduce weight so that it will meet new US fuel economy standards. The US seems to want a 4t truck to have the fuel economy of a Kia Rio.