Symmetrical All Wheel Fail

Started by r0tor, August 24, 2018, 07:11:06 PM

Soup DeVille

Maybe we need to start off small. I mean, they don't let you fuck the glumpers at Glumpees without a level 4 FuckPass, do they?

1975 Honda CB750, 1986 Rebel Rascal (sailing dinghy), 2015 Mini Cooper, 2020 Winnebago 31H (E450), 2021 Toyota 4Runner, 2022 Lincoln Aviator

giant_mtb


12,000 RPM

Quote from: CaminoRacer on September 13, 2018, 06:10:44 PM
It would be awesome if they sold Cherokees still. Update the engine a bit (a BIT. Nothing too complicated) and use nicer modern plastics. Keep the seats the same, the simple dash design, the rugged drivetrain. Add some gears to the transmission for better highway cruising but don't sacrifice low range.
What would a modern XJ do that a Wrangler doesn't?
Protecctor of the Atmospheric Engine #TheyLiedToUs

2o6

Quote from: 12,000 RPM on October 24, 2018, 09:10:29 AM
What would a modern XJ do that a Wrangler doesn't?

This. If you want a car with solid axles and BOF and good approach and departure angles, buy a Wrangler.


The current lineup of Car-based off-roaders are perfect for Jeep clientele. Most old Cherokees stayed on road anyway. And the new style FWD crossovers actually don't embarass themselves off road, either.

giant_mtb

Quote from: 12,000 RPM on October 24, 2018, 09:10:29 AM
What would a modern XJ do that a Wrangler doesn't?

Be smaller.  Have a more livable cabin.

Soup DeVille

Quote from: 2o6 on October 24, 2018, 09:12:19 AM
This. If you want a car with solid axles and BOF and good approach and departure angles, buy a Wrangler.


The current lineup of Car-based off-roaders are perfect for Jeep clientele. Most old Cherokees stayed on road anyway. And the new style FWD crossovers actually don't embarass themselves off road, either.

The Cherokee was never BOF.

It was also more livable with day-to-day, is smaller than modern Wranglers, and as capable as it needs to be.

Its always he guys that do not and have no interest in off roading that don't get it; and that's OK.
Maybe we need to start off small. I mean, they don't let you fuck the glumpers at Glumpees without a level 4 FuckPass, do they?

1975 Honda CB750, 1986 Rebel Rascal (sailing dinghy), 2015 Mini Cooper, 2020 Winnebago 31H (E450), 2021 Toyota 4Runner, 2022 Lincoln Aviator

CaminoRacer

I like the looks of the XJ more than the Wrangler.

The Patriot is similar, and because of that I sometimes have a weird desire for one. But other than styling it's not very good.
2020 BMW 330i, 1969 El Camino, 2017 Bolt EV

2o6

Quote from: Soup DeVille on October 24, 2018, 09:19:56 AM
The Cherokee was never BOF.

It was also more livable with day-to-day, is smaller than modern Wranglers, and as capable as it needs to be.

Its always he guys that do not and have no interest in off roading that don't get it; and that's OK.


Who would buy one tho? I can't see Jeep making a unibody small RWD chassis with solid axles for people to buy. The last one they had was the Liberty (although had independent front suspension) and it was mediocre, and effectively got its ass handed to it by the CR-V crowd.



I could see something like a Jeep version of the new Suzuki Jimny working. But a compact RWD SUV? IDK it seems like it wouldn't be worth the trouble.

Quote from: CaminoRacer on October 24, 2018, 09:25:00 AM
I like the looks of the XJ more than the Wrangler.

The Patriot is similar, and because of that I sometimes have a weird desire for one. But other than styling it's not very good.

That's a Lancer with a lift kit

Quote from: giant_mtb on October 24, 2018, 09:12:23 AM
Be smaller.  Have a more livable cabin.


Smaller, yeah. But IDK modern wranglers (especially the very latest one) are pretty fuckin nice for what they are.

CaminoRacer

#188
Quote from: 2o6 on October 24, 2018, 09:31:50 AM
That's a Lancer with a lift kit

That's why I said the styling is the only part that really attracts me. I wish it had a V6 and a beefier platform.

Quote from: 2o6 on October 24, 2018, 09:31:50 AM
Smaller, yeah. But IDK modern wranglers (especially the very latest one) are pretty fuckin nice for what they are.

Until they crash because the frame welds fail. :lol:
2020 BMW 330i, 1969 El Camino, 2017 Bolt EV

BimmerM3

Yeah no chance that they'll make a modernized old-school Cherokee. It would just eat either Wrangler or CUV Cherokee sales, and 4Runners exist for people who want off-road capability with a comfortable cabin.

It'd be nice if Nissan brought back the Xterra though. That's basically the original Cherokee's market segment.

BimmerM3

BTW, so that I don't have to scroll through 7 pages of posts, someone did post the follow-up video where they turned off X Mode and made it up, right?

giant_mtb

Quote from: BimmerM3 on November 05, 2018, 12:23:04 PM
BTW, so that I don't have to scroll through 7 pages of posts, someone did post the follow-up video where they turned off X Mode and made it up, right?

Yes.

MX793

They recently posted a new video demonstrating what Subaru's, and the other CUVs', AWD system is really designed for: slick road surfaces.  They put rollers under varying wheels to simulate low/no traction (ice) at that wheel.  Including scenarios when 3 tires are on ice. 
Needs more Jiggawatts

2016 Ford Mustang GTPP / 2011 Toyota Rav4 Base AWD / 2014 Kawasaki Ninja 1000 ABS
1992 Nissan 240SX Fastback / 2004 Mazda Mazda3s / 2011 Ford Mustang V6 Premium / 2007 Suzuki GSF1250SA Bandit / 2006 VW Jetta 2.5

r0tor

Quote from: MX793 on November 05, 2018, 01:01:43 PM
They recently posted a new video demonstrating what Subaru's, and the other CUVs', AWD system is really designed for: slick road surfaces.  They put rollers under varying wheels to simulate low/no traction (ice) at that wheel.  Including scenarios when 3 tires are on ice. 

90% of systems can pass that test... You only need to transfer maybe 3% of the engine power to move a car on level ground 1 foot
2011 Jeep Grand Cherokee No Speed -- 2004 Mazda RX8 6 speed -- 2018 Alfa Romeo Giulia All Speed

BimmerM3

#194
Quote from: r0tor on November 05, 2018, 02:41:21 PM
90% of systems can pass that test... You only need to transfer maybe 3% of the engine power to move a car on level ground 1 foot

If it makes you feel any better, they also did it on a sloped loading dock (though less successfully).

http://youtu.be/zE5hfbhN5FM?t=243

r0tor

2011 Jeep Grand Cherokee No Speed -- 2004 Mazda RX8 6 speed -- 2018 Alfa Romeo Giulia All Speed

BimmerM3

Quote from: r0tor on November 05, 2018, 05:06:48 PM
Most predictable...

You predicted that the primary reason it wouldn't succeed was tire traction, not a limitation of the AWD system itself?

r0tor

Poor tire traction is caused by poor articulation.  It is unknown if it could transfer enough power if the wheel had enough traction.... or if the CVT would limit the power. It is incredibly hard to transfer power by brakes alone.

After a minute or two of that the system would completely overheat and fail... Like the original video.
2011 Jeep Grand Cherokee No Speed -- 2004 Mazda RX8 6 speed -- 2018 Alfa Romeo Giulia All Speed

BimmerM3

Quote from: r0tor on November 05, 2018, 06:55:31 PM
Poor tire traction is caused by poor articulation. It is unknown if it could transfer enough power if the wheel had enough traction.... or if the CVT would limit the power. It is incredibly hard to transfer power by brakes alone.

That's fair. I'd be interested to see what would happen if they put a block with traction under the fourth wheel so that all four would be at the same height. It's also kind of weird that they didn't try it with both VDC and X Mode on.

FWIW, they tried the same test with a Pilot with effectively the same results - it only got off the rollers because it slid sideways and gained traction on the edge of the riser. I don't think they've done the inclined test with any other vehicles yet. The Outback at least looked like it was trying a bit harder to find a wheel with traction. The Pilot had a lot more spinning.

Quote from: r0tor on November 05, 2018, 06:55:31 PM
After a minute or two of that the system would completely overheat and fail... Like the original video.

...but not like the follow-up where they made it up the same feature.

Besides, as has been reiterated, very few people purchase these cars to go up true off-road features like that.

Don't get me wrong, I'm not a huge fan of the CVT and will get a manual if I buy a Subaru, but calling them garbage off-road because of one video where they were obviously putting it somewhere the vehicle wasn't really supposed to go, especially since they went back and made it up later one, is... actually about what I've come to expect around here. :facepalm: :lol:

12,000 RPM

Protecctor of the Atmospheric Engine #TheyLiedToUs

r0tor

Quote from: BimmerM3 on November 05, 2018, 07:50:44 PM

Don't get me wrong, I'm not a huge fan of the CVT and will get a manual if I buy a Subaru, but calling them garbage off-road because of one video where they were obviously putting it somewhere the vehicle wasn't really supposed to go, especially since they went back and made it up later one, is... actually about what I've come to expect around here. :facepalm: :lol:

The tests show Subaru has downgraded itself from class leading awd to just plain average. I have little doubt a 15 year old Outback would pass these tests relatively easily.

Is average fine for most - probably.  Does it still deserve being highly touted for their awd... probably not.  For a brand that pins its success on awd, I think it's a problematic direction.
2011 Jeep Grand Cherokee No Speed -- 2004 Mazda RX8 6 speed -- 2018 Alfa Romeo Giulia All Speed

Laconian

I don't disagree, but they probably feel the need to have their consumption and on-road performance specs be somewhat competitive with the cheater AWD-lite configurations. They still need to sell units, and CVT gives them parity in the metrics that most [naive] customers care about.
Kia EV6 GT-Line / MX-5 RF 6MT

MX793

Quote from: r0tor on November 05, 2018, 06:55:31 PM
Poor tire traction is caused by poor articulation.  It is unknown if it could transfer enough power if the wheel had enough traction.... or if the CVT would limit the power. It is incredibly hard to transfer power by brakes alone.

After a minute or two of that the system would completely overheat and fail... Like the original video.

I really don't think those rollers are high enough for it to be an articulation issue.  With an IRS, the rear tire should have still had a pretty square stance and contact patch.  I'd say it came down to the fact that on an incline, there is less normal force between the road and tires, so friction is reduced.  I'd also be curious just how grippy that loading dock pavement was relative to well-travel road pavement.  It very well could have been contaminated with oils or other things that washed down the ramp in the rain and collected near the bottom.  Or, if it had recently been sealed, it wouldn't be very grippy (coloration makes it look like it was sealed much more recently than the grayer pavement next to it).
Needs more Jiggawatts

2016 Ford Mustang GTPP / 2011 Toyota Rav4 Base AWD / 2014 Kawasaki Ninja 1000 ABS
1992 Nissan 240SX Fastback / 2004 Mazda Mazda3s / 2011 Ford Mustang V6 Premium / 2007 Suzuki GSF1250SA Bandit / 2006 VW Jetta 2.5

r0tor

Ummm... It's highly unlikely a loading ramp would require 4wd/awd since the trucks that use it are RWD with open diffs
2011 Jeep Grand Cherokee No Speed -- 2004 Mazda RX8 6 speed -- 2018 Alfa Romeo Giulia All Speed

Soup DeVille

Quote from: r0tor on November 06, 2018, 04:45:46 PM
Ummm... It's highly unlikely a loading ramp would require 4wd/awd since the trucks that use it are RWD with open diffs

No, they wouldn't normally have a problem. And the drive wheels barely enter the ramped portion at all.

Did get stuck in one once though.  And then again at the driveway leaving the plant.
Maybe we need to start off small. I mean, they don't let you fuck the glumpers at Glumpees without a level 4 FuckPass, do they?

1975 Honda CB750, 1986 Rebel Rascal (sailing dinghy), 2015 Mini Cooper, 2020 Winnebago 31H (E450), 2021 Toyota 4Runner, 2022 Lincoln Aviator

giant_mtb

I imagine the folks at Subaru also have to take into account the strength of the half shafts.  Can't just go putting full load on one CV shaft unless it's designed for it. 

BimmerM3

#206
Quote from: Laconian on November 06, 2018, 03:47:21 PM
I don't disagree, but they probably feel the need to have their consumption and on-road performance specs be somewhat competitive with the cheater AWD-lite configurations. They still need to sell units, and CVT gives them parity in the metrics that most [naive] customers care about.

Not to mention that they still have more ground clearance than almost any other crossover, which is more important than AWD fanciness for the type of off-roading that real world owners buy these vehicles for (rough gravel roads).

I'd be a lot more concerned about long term durability of the CVT than whether or not it can push me up a ramp with one wheel.