I want to replace my OEM limited slip rear with a Eaton/Detroit True Trac. My LS never worked since i've owned the truck. I wanted to hear from anyone that has had a TRue Trac and their results, good and bad. I tow only a 9,000 lb camper and drive the truck mostly as a daily driver and very litle off road.
I have been running one in the rear end of my offroad SASed explorer with an "aggressive" bias ratio. Its not a superduty unfortunately but its bigger than my f-350 and running large heavy military tires. I am super impressed with it, using it daily in either snow,ice, mud, rocks, sand, trail. In many cases when one rear tire had almost all the weight or sunk in the the mud, both tires spun very equally. Any time I have accelerated hard even just on street to break the tires loose, both tires have always spun. On top of that its a very strong carrier, stronger than most stock carriers. The street manners are amazing even during the winter. I found it it wont squawk the tires until you turn sharp and a decent pace with acceleration(the harder you accelerate, the more friction created in the helix gears helping lock the axle shafts more equally).
Its definitely a huge benefit over a non selective locker for street driving, plus I'm pretty sure that little bit of give it can provide over a locker has saved my axle shafts time and time again.
The real selling features for me was that its more aggressive than clutch limited slips and it will last the life of your truck while still providing the same performance. Clutch limited slips of any kind wear way too fast.
I am super impressed with it, using it daily in either snow,ice, mud, rocks, sand, trail. In many cases when one rear tire had almost all the weight or sunk in the the mud, both tires spun very equally. Any time I have accelerated hard even just on street to break the tires loose, both tires have always spun. On top of that its a very strong carrier, stronger than most stock carriers. The street manners are amazing even during the winter. I found it it wont squawk the tires until you turn sharp and a decent pace with acceleration(the harder you accelerate, the more friction created in the helix gears helping lock the axle shafts more equally).
Its definitely a huge benefit over a non selective locker for street driving, plus I'm pretty sure that little bit of give it can provide over a locker has saved my axle shafts time and time again.
The real selling features for me was that its more aggressive than clutch limited slips and it will last the life of your truck while still providing the same performance. Clutch limited slips of any kind wear way too fast.
yeah i had considered rebuilding the stock limited slip but my local gear shop said they really need to be serviced on average about every 3 years to really work as they should. seems like the TRue Trac is def a more permanent solution.
It's the best "limited slip" out there IMHO. I would buy another one in a heart beat. The only other carrier I would go with is the Eaton E-locker for its true lock-ability, being selectable, strong, reliable, does not require a compressor and is instant on the fly. I run one in the front end of the same explorer and its never let me down, absolutely love it.
A brand new clutch limited slip only takes once with one tire spinning and a heavy foot to glaze the clutches. Then it will never work as well again.
so i had the TRue Trac installed yesterday and it seems to be workign great. it was a little wet out in the northeast yesterday so when i got the truck warm.. i came to a stop, and gunned it a little and it puffed a little smoke and lit up both rear tires nicely. i'm not one to hot-rod around really so i didn't really beat on it but it seems to hook up nicely. I dont notice any noises from it and it ddidnt drive any diffrently that i can tell. I have not had it in any mud but when i do i'll have a more complete report on it. thanks very much for everyone's input.
Bias ratio is the torque applied to the high traction wheel based on the amount of torque available to the low traction wheel. The bias applies additional torque to the high traction wheel with a ratio multiplied by the low traction wheel's torque. Ex:
Open Diff (no bias 1:1) One wheel hits ice, starts spinning, only able to apply 20ft\lb to the ground. The high traction wheel can now only match that with 20ft/lb. (20ft/lb x 1 = 20ft/lb) Total torque making it to the ground is 40ft/lb.
TrueTrac (3.5:1 bias) Same scenario, the low traction wheel can still only apply 20ft/lb but the high traction will push with 70ft/lb (20ft/lb x 3.5 = 70ft/lb) Total torque making it to the ground 90ft/lb.
The street manners are great with its constant adapting nature. In some cases its better than a full locker which can make you loose more traction due to the lack of speed differentiation. However nothing can beat a full locker when all traction has been lost on one wheel (0ft/lb x 3.5 = 0ft/lb)
Eaton does bias ratios from 2:1-5:1. They make multiple ratios for the same axles to accommodate the customers needs. I looked around though and there only seems to be one choice for the 10.5" and no info on bias. My guess it would be an average 3ish:1. Just out of curiosity it would be nice to know. Mine is a 3.5 and like I said it works awesome on and off road.
just stomped on the gas at a stop sign and saw both tires spin last night. first time my truck has ever spun both! i dont do crazy burnouts or anything but i would have to put the truck in 4WD to even move on damp grass before this. not cheap, but def an effective carrier.
I have a TruTrac in my chubby 3500, and will replace the rears in the X and F350 with TruTrac..I have been very impressed with it!
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