dr.johnod Posted August 12, 2010 Share Posted August 12, 2010 Regarding 2011 Expedition. Are they kidding? You can't order Posi., Unless you get the Limo package! WTF. Tell me I'm wrong. Move this post to wherever you think it will do the most good. Quote Link to comment Share on other sites More sharing options...
akirby Posted August 12, 2010 Share Posted August 12, 2010 Regarding 2011 Expedition. Are they kidding? You can't order Posi., Unless you get the Limo package! WTF. Tell me I'm wrong. Move this post to wherever you think it will do the most good. Quote from the order guide: Limited Slip axle available only as part of the Limo Package (17L) But you don't actually expect a post in a forum to change a manufacturing decision, do you? Quote Link to comment Share on other sites More sharing options...
Deanh Posted August 12, 2010 Share Posted August 12, 2010 Regarding 2011 Expedition. Are they kidding? You can't order Posi., Unless you get the Limo package! WTF. Tell me I'm wrong. Move this post to wherever you think it will do the most good. welcome to the world of basically electronic differential...RSC and ESC do the same thing but ALSO supply yaw control....in a word, probably superior.....maybe..... Quote Link to comment Share on other sites More sharing options...
akirby Posted August 12, 2010 Share Posted August 12, 2010 welcome to the world of basically electronic differential...RSC and ESC do the same thing but ALSO supply yaw control....in a word, probably superior.....maybe..... Not exactly. A limited slip axle will ensure both wheels get torque without cutting engine power or applying the brakes. With electronic traction control (not RSC or ESC although both include ETC) it has to apply brakes to the spinning wheel to force torque to the non spinning wheel, then it cuts engine torque. It will keep you from getting stuck if you drop 2 wheels onto mud or ice but it doesn't work the same way or nearly as well as a true limited slip differential. But it is better than nothing. Quote Link to comment Share on other sites More sharing options...
Deanh Posted August 12, 2010 Share Posted August 12, 2010 Not exactly. A limited slip axle will ensure both wheels get torque without cutting engine power or applying the brakes. With electronic traction control (not RSC or ESC although both include ETC) it has to apply brakes to the spinning wheel to force torque to the non spinning wheel, then it cuts engine torque. It will keep you from getting stuck if you drop 2 wheels onto mud or ice but it doesn't work the same way or nearly as well as a true limited slip differential. But it is better than nothing. does it not send power to the wheel that has traction?,,,ETC, RSC. ESC applies brakes to the individual wheel that IS spinning..... sounds like a different take on the same scenario to me....( and sorry I meant ETC...damn military speak IS (( I Swear )) ) Quote Link to comment Share on other sites More sharing options...
StevenCaylor Posted August 12, 2010 Share Posted August 12, 2010 does it not send power to the wheel that has traction?,,,ETC, RSC. ESC applies brakes to the individual wheel that IS spinning..... sounds like a different take on the same scenario to me....( and sorry I meant ETC...damn military speak IS (( I Swear )) ) I have TC on my 2000 V6 Mustang (open diff) and don't miss the Traction-Lok. Probably the only time Traction-Lok (vs TC) would be needed would be for drag racing. Quote Link to comment Share on other sites More sharing options...
Buzzforbrains Posted August 12, 2010 Share Posted August 12, 2010 Can't have RSC and LS. End of story. Quote Link to comment Share on other sites More sharing options...
akirby Posted August 13, 2010 Share Posted August 13, 2010 does it not send power to the wheel that has traction?,,,ETC, RSC. ESC applies brakes to the individual wheel that IS spinning..... sounds like a different take on the same scenario to me....( and sorry I meant ETC...damn military speak IS (( I Swear )) ) RSC and ESC apply brakes to individual wheels but that's based on yaw sensors, not spinning wheels. ETC stops a spinning wheel. The difference between ETC and LS is that ETC cuts engine power and slows down the spinning wheel with the brake while LS operates at full throttle and full wheel speed. ETC equipped vehicles always have shutoff switches - you must turn it off if you're trying to go up a snowy hill e.g. With LS you just go. ETC is sufficient for most situations. I was just pointing out that they aren't exactly the same. Quote Link to comment Share on other sites More sharing options...
carforford Posted August 13, 2010 Share Posted August 13, 2010 Regarding 2011 Expedition. Are they kidding? You can't order Posi., Unless you get the Limo package! WTF. Tell me I'm wrong. Move this post to wherever you think it will do the most good. Been this way since Model Year 2005 on Explorers/Avaitors, Mountianeers, Expedition, and Navigator. I worked for a huge FLM dealer at the time. This has not changed in 6 model years. Oh, and BTW I would much rather have the Limited Slip. Quote Link to comment Share on other sites More sharing options...
Buzzforbrains Posted August 23, 2010 Share Posted August 23, 2010 Been this way since Model Year 2005 on Explorers/Avaitors, Mountianeers, Expedition, and Navigator. I worked for a huge FLM dealer at the time. This has not changed in 6 model years. Oh, and BTW I would much rather have the Limited Slip. And replace the clutch packs every 30K miles? Quote Link to comment Share on other sites More sharing options...
carforford Posted August 28, 2010 Share Posted August 28, 2010 And replace the clutch packs every 30K miles? Any vehicle I ever owned which had the Posi on it, I never replaced the clutch packs. Just simple fluid change and it lasted the life of the vehicle. Quote Link to comment Share on other sites More sharing options...
Buzzforbrains Posted August 30, 2010 Share Posted August 30, 2010 Any vehicle I ever owned which had the Posi on it, I never replaced the clutch packs. Just simple fluid change and it lasted the life of the vehicle. Really? You had good luck. In our fleet 3 out of the 5 truck with LS have needed clutchs replaced frequently. And the 2 trucks that did better saw more abuse. Quote Link to comment Share on other sites More sharing options...
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