Detroit Truetrac Lockers are maintenance free, fully mechanical, Torsen style limited slip differentials with helical gears instead of clutch packs (which wear out over time) to provide constant torque to both wheels while still allowing for smooth turns on pavement. They perform like a limited-slip differential under normal driving conditions, automatically transferring torque to the wheel with better traction . Locker vs Truetrac / Torsen / Wavetrac on Road Course ... Its versatility makes Detroit Truetrac the ideal traction solution for almost any type of vehicle. : TrueTrac performs like a conventional (open) differential, until there is a loss of traction. Application: 2006 SR5 w/ V6 4WD w/factory traction control system. Torsen and helical differentials work in a fairly similar fashion, using clever gearing to apply locking force to transfer torque to the wheel with more grip. In the Torsen and Truetrac there is nothing to wear out or lose adjustment, like with Clutch pack style LSD (limited slip differential) The whole system looks so bomber and simple, that is why I am wondering why more people don't have them on their Landcruisers. Torsen differentials can be used in one or more positions on a motor vehicle: . 1,156. Apr 11, 2012. Under normal driving . The torque is then sent to the other tire that still has traction. Wavetrac VS. Truetrac, opinions? | SVTPerformance.com This is a completely separate design from the common beveled spider gear designs seen in most of the automotive industry. 912A686 | Eaton Detroit Truetrac Differential ... Torqueline Torque Lock Rear LSD. They perform like an open differential under normal driving conditions, automatically transferring torque to the wheel with better traction when ground conditions warrant. It is based on technology derived from the Eaton Detroit Truetrac® limited-slip differential (LSD) which is a pioneer in helical gear based traction technology, and remains the leading helical gear-type limited slip diff in the . Anyone who says an LSD makes traction worse vs an Open differential simply doesn't understand how to drive or how an LSD works. The Best Types of Car Differentials for Snow and Ice If this is your first visit, be sure to check out the FAQ by clicking the link above. A Torsen differential, which is a type of helical differential, does not use clutches as a traditional LSD does. Eaton 912A569 Detroit Truetrac 27 Spline Differential for Dana 35. When I am accelerating out of a corner the differential free spins for 90*-180* before locking up. Only show this user. I do use this car for road trips and cruising, so a spool or Detroit Locker are not options. In real life this means that when a single axle loses grip completely (very low traction on ice, or if wheels raised in the air) the car is not able to move. Differential designers have to make up the difference in other ways. Helical gear diffs are sold by Eaton (TrueTrac), Wavetrac, American Axle (TracRite GT), Quaife, Torsen, as well as a few others. Snow, ice, sand, & mud. I have been looking to convert to a Detroit truetrac for my 3800 lb Chevelle. All three are inexpensive, easily installed, and perfectly well behaved on the street so long as you're . I'm not a good driver, and I'm sure the car is not set up great as well. Good: Truetrac is a Torque Biasing Differential like a Torsen. The Truetrac operates by transferring power from the spinning wheel to the wheel with the most traction. Bought an Eaton E-locker for $699 just have to look hard enough. Only 7 left in stock (more on the way). Detroit Truetrac - Helical-gear limited-slip (worm differential) is the modern replacement for the classic clutch-type . The Truetrac or Torsen would be best for autocross. With a truetrac you can touch the brake a little to bias the differential to get it to work with a wheel off the ground.. Wavetrac Differentials are available for an ever-increasing number of applications. Torsen - this is a limited slip but operates in a different way. I used to autocross a FWD car that had a Quaife (worm gear), and I loved that thing, but Quaife don't make a unit for the Ford 8.8. Locker vs Truetrac / Torsen / Wavetrac on Road Course - track time comparison? The Nitro Helical Worm Gear is a torque-sensitive mechanical limited-slip differential that uses worm gears and spur gears to dispense and distinguish input power between two drive wheels or front and back axles. Learned this the hard way when we broke an axle in FSAE competition. If you're thinking this sounds exactly like the Detroit or Eaton Truetrac, you're not wrong. All I can tell you is that the TracRite/TrueTrac stuff I have installed have all worked exactly the same in reverse as they did forward. The principle is that you can drive a worm wheel with a worm gear, but because of the angle of attack between the gears you cannot back-drive a worm gear (i.e. The product is verified as being authentic; however, this does not guarantee the condition or fit for purpose of the product. Car is about 2800lb, 99-inch wheelbase, 29x18.5x15 Hoosier Pro Street Radials, 1993 LT1/700r4. In an Open diff, all torque goes to the easiest wheel to spin. Messages. I think I have decided to go truetrac. That day will come. Diferencial Torsen (Autoblocante) / Self-locking Torsen Differential - YouTube . the worm wheel will not turn a worm gear). This item: Eaton 912A585 Detroit Truetrac 27 Spline Differential for Dana 30. Creager told us, "the Truetrac differential is the first in the marketplace to my knowledge that had parallel access pinion gears. Let's say we have a two wheel drive vehicle that is equipped with a Torsen differential. To be more precise, with any Torsen style differential both wheels will always be turning in the direction that power is applied. Torsen vs standard Traction lok LSD differential pros and Cons of the Torsen - more fragile (although in the Mustang they are very tough), less forgiving especially at low speed Pros of the Clutch LSD - more forgiving at all speeds but especially at low speeds, smoother Cons of the Clutch LSD - Clutches wear out and need replacement, more heat build up due to clutch pack friction=more prone to . Getting ready to modify the rear end in my MT-82 '13 GT. This configuration spreads the load across 6 gears for greater strength. I've also seen places like stage3motorsports selling an Eaton elocker for the front. Open vs Limited-Slip Differentials. A two-way clutch-type LSD could be used in either a front or rear differential, but a Torsen must be made for a front or rear differential. Eaton Detroit TrueTrac Lockers and Accessories Detroit Truetrac Lockers are maintenance free, fully mechanical, Torsen style limited slip differentials with helical gears instead of clutch packs (which wear out over time) to provide constant torque to both wheels while still allowing for smooth turns on pavement. They also make a tougher version with 4 side gears instead of the more common 3 gear version which is even stronger. Whether you're looking to maintain, optimize, or upgrade, we offer competitive pricing on Eaton Detroit TrueTrac Toyota Tacoma 8.4 Inch Rear Differential - 913A541 for your Truck or Jeep at 4 Wheel Parts. These are all generally similar, but there are nuance differences in the gear designs, geometry, and materials used. TrueTrac/Torsen vs OEM Open Diffs - Toyota 4Runner Forum . . LSD's can be gear based (torsen), clutch based (preload with springs, cam actuated, electronically controlled, etc..). You are 2/3 the price of a selectable and it is outperformed by a $230 lunchbox. Just like the Truetrac it is a helical gear differential but this unit has 6 gears per side vs the 3 gears of the Truetrac. Limited-Slip Differential vs Torsen. Overview. I will probably be sending my whole housing to Moser to get the 9" end upgrade and some axles done for it. Re: Front Truetrac.benefits vs drawbacks. If one wheel has no traction or is in the air it will simply be spinning about 1/3 as fast. Although Gleason no longer makes the Torsen differential, the Detroit Truetrac is a proven design that is available for many popular applications. Most end up upgrading to true lockers, which is why the Jeep Rubicon comes with front and rear lockers and not front and rear limited slip differentials. Differential designers have to make up the difference in other ways. The Eaton is a clutch-type unit; it will wear out. rolape2. I do believe I have seen a TruTrac for the Non-max tow Gladiator. Sometimes, adjusting the thrust washers to suit helps. If the slipping tire is sitting on a solid sheet of . A complete Currie 9-inch third member makes it easy to update your street rod, muscle car, or truck with a new gear ratio or performance differential. It is a 98% street car that sees the strip about 1-2 times a year and I would like to road race next year. May 23, 2014. Seems like the 4 most mentioned are - DPI Platinum Track Torsen T2R differential Ford Racing T2 Torsen Detroit Truetrac Cost ranges from ~$450 to $950 with the first 3 being torque-biasing versions and the Trutrac a limited slip. Both operate under the same design with minimal play. So the truetrac can even work in that environment.. Just not ideal. . The drivetrain is absorbing that engagement and 3rd is the weak point. This was back in 2011 though so I think that was before the latest version of the T2R. The Gleason Torsen was a gear driven, torque-sensing limited slip differential that was very smooth and reliable, as long as it was not used with tall tires. For wheeling purposes it is poor value in a front axle. Yes a carrier change, but if you are putting in a torsen/tru-trac that is the carrier. Torsen is a particular kind of limited slip differential (LSD). Torsen differential is not capable of transferring 100% of torque to one of the axles. Check out this and other Eaton Truetrac Differentials at http://www.summitracing.com/redirect?banner=SocialYT515. Off-Road Section - Torsen LSD vs Locker - Pros/Cons - I've seen a few threads where a Gen1 Raptor Torsen has been swapped into the front diff. In a Torsen, that usually comes from adjusting gear geometry in the design phase. What you want is a diff that biases torque while maintaining near the ideal inside vs outside speed relationship in accordance with the corner radius. Even though the Gleason Torsen limited slip differential has been out of production for about thirteen years now, I still get quite a few questions about it. They are smoother and will not upset the tires in a hard turn. (aftermarket) 1 yr warranty The Detroit Truetrac was the first helical gear differential ever introduced into the automotive aftermarket as an Eaton brand. In theory a TBD is superior to a clutch or cone type LS because it can transfer more torque to the tire with traction. • Standard on the SVT Raptor, the TORSEN (torquesensing) differential uses a parallel helical gear system to sense torque differences between the front axles/wheels and provides maximum torque to the wheel with the most traction • The differential continuously manages power delivery between the front axles/wheels helping to Tractech had stopped producing their original Truetrac F-Body application and were at least six months away from releasing an updated model so I looked more closely at Torsen. This means it can only compensate for so much traction difference between the left and right side tires. The Eaton TrueTrac is a similar design and has an excellent reputation for durability. 218mm, 32-Spline, Axle Shaft Dia. A Truetrac is a Torsen differential. There are different ways of locking the differential. If one tire breaks traction, the amount of rotation (or spin) is controlled. If this is your first visit, be sure to check out the FAQ by clicking the link above. Going with 3.73 (currently has 3.31) and want to change the differential to something more reactive and consistent than the Ford Trac-Lok. Sep 11, 2009. tru-trac is a gear-style limited slip axle. I can get the truetrac and axles for what the Wavetrac itself costs. So done/done. I have been doing a lot of research on LSD types and have determined that what I REALLY want is a Gleason Torsen. Tags . TrueTrac/Torsen vs OEM Open Diffs. The Truetrac is a helical gear limited slip differential and never "locks up". But for running the desert at speed for example I think a truetrac or other ATB (torsen, quaife) type differential is better than any locker. Reading up on them, it seems like a really much better LSD and possibly a good fit for a vehicle that is a daily driver and does some weekend off-roading. The owners manual states: --- Detroit Truetrac® High quality mineral gear lubes are required for use in Detroit Truetrac differentials. I need a 33 spine carrier for a 3.08 gear that will not only turn good, but put 1000 hp/900 ftlb to the ground without problem. . The Harrop/Eaton Truetrac was the first helical gear differential ever introduced into the automotive aftermarket. For your front axle, I would install a true locker like an Aussie, Lockrite, or No-Slip. Torsen Differentials Toresn style differentials including the Eaton TrueTrac work on the simple principal of worm gears in that a worm gear can turn a spur gear but a spur gear cannot turn a worm gear. Find Eaton Detroit Truetrac Differentials and get Free Shipping on Orders Over $99 at Summit Racing! Unfortunately, they don't make anything for Dodge, let alone a 1500. The Eaton Truetrac is available for the rear axle of 1500s and LOOKS similar to the Torsen design but it works on a somewhat different principle. 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