bellhousing patterns - Ford, GM, MoPar and our own five-bolt design. <lol> Trust me, It's no where near shoulder height ! The tallest to the right is used to shift the transmission from first to second gear. Since the taller ring and pinion have more tooth area contact they are more reliable and less prone to breakage. We acheive more than two speeds by combining multiple cases. lenco air shift options | InsideTopAlcohol Magnesium case is standard. 1.35% Uses 26 tooth planet gears, a 28 tooth sun gear and a 80 tooth ring gear. Lencodrive 2 Speed. There must be a minimum of .060" to a maximum of .090" of clearance between face of pilot bearing to beginning of clutch spline. Copyright 2020, Lenco Racing. Add bellhousing depth to above lengths for total length: Lenco aluminum, Titanium or Browell steel: 7.200". What kind of clutch you run is a big factor. 1.44%Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. I purchased the trans disassembled and do not have the shim configuration shown in the drawing. For example, a three speed requires two cases, a four-speed requires three cases, a five-speed requires four cases and a six-speed requires five cases. His typical drives usually include lighting up the rear tires while going sideways as he yanks the levers back, shifting the ensemble of levers to move the transmission through 1st, 2nd, and 3rd in quick succession. Warning: Do Not over tighten set screw. This gadget employed three shift levers to accomplish everything that a single lever could do. Lencodrive 3 Speed. 1.28% - Uses 32 tooth planet gears, a 25 tooth sun gear and a 89 tooth ring gear. Stay up to date with news and promotions by signing up for our monthlly newsletter. The counter shaft has fixed associating gears that are permanently meshed with the loosely connected gears on the output shaft. Lenco CS1 Assembly Help | Yellow Bullet Forums Lenco, the all time champion and undisputed leader in the drag racing transmissions. 1.17% (1.165) - Uses 22/38 tooth planet gears, a 24 tooth sun gear and an 84 tooth ring gear. Th.. Mountains Garage: How To Shift A Lenco Racing Transmission Tags: Since the 30 wt oil is thicker it takes a . $3,200. Screw air servo in (clockwise) until you see the rotary plate start to shift, now screw air servo Out (counter-clockwise) until the rotary shift plate stops moving. This action compresses an internal clutch pack which results in a final driveratio of 1:1. The Lencodrive is the shortest and lightest torque converter driven transmission available anywhere. After inserting arm into the air servo piston boss, run set screw in until you can no longer remove the arm from the piston boss. Dale's Transmission on Instagram: "Weird Transmission Wednesday The 1.500% Uses 19 tooth planet gears, a 38 tooth sun gear and a 76 tooth ring gear. The position of the shift lever is relative to the application. View the whole process and start at the beginning. 1.24%Uses 26/31 tooth planet gears, a 23 tooth sun gear and an 80 tooth ring gear. The Lenco Racing ST1200 4 Speed Transmission has been specifically designed and engineered for severe duty street/strip applications. A large sprag clutch is attached on to the sun gear of the planetary carrier finishing the transmission section. There are a variety of both manual and CO2 servo tower designs. You can expand to 3 or 4 speeds by addition of additional cases. Copyright 2020, Lenco Racing. contain a 1.37 ratio planet gear set. This transmission can be used to drive your hot rod to work Monday through Friday and then to the dragstrip and the winner's circle on weekends. With a simple shift pressure adjustment you can easily compensate. 1.41% Uses 23 tooth planet gears, a 32 tooth sun gear and a 79 tooth ring gear. Each case in succession, with its particular underdrive ratio, determines the immediate drive ratio. Too much torque and the output shaft can suffer deflection, and the whole system can start to fail in its operation as the gears move away from each other. Despite its reputation among racers and its many uses today, which include everything from boats to alcohol dragsters, many enthusiasts have not caught on to the fact that there IS a street version available. It's capacity is much stronger than the small sprag. This is our large sprag and unlike the small sprag doesn't have a snap ring in the outer race and has two brass thrust washers. Lenco Transmission Overview 1.438%Uses 20 tooth planet gears, a 32 tooth sun gear and a 73 tooth ring gear. It is also 2-lbs lighter for lower rotational mass which translates to quicker acceleration. You achieve more than two speeds by combining multiple casesFor example, a three speed requires two cases, A four speed requires three cases, A five speed requires four cases and a six speed requires five cases. Air or Lever Shift. Purpose designed and produced for drag, ski and river boat requirements. Once engaged, the gears are shifted without a clutch. Over the years, there have been many in-car-cameras showing Pro Stock drivers grabbing and shifting the trademark five levers as they power their vehicles toward the finish line. Transmissions and Clutches, Racing Transmissions for sale on RacingJunk 1.22%Uses 21/30 tooth planet gears, a 24 tooth sun gear and a 75 tooth ring gear. First gear is the furthest lever from the driver with higher gears being the nearest levers. Our sister publication is attempting to build an 8-second quarter-mile, '68 Chevy pickup which will also embark on a 450-plus mile trek from Los Angeles to Phoenix without any other changes. 1.20%Uses 22/32 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. The original transmission was and is still a bulletproof transmission for the street/strip crowd. Shift pressure is adjustable, whether it be for one case, all cases or anindividual case in a multiple case configuration. The CS1, CS2, CS3 and CS4 transmissions provide the perfect solution for harnessing the unique HP and torque output of boat engines. All transmissions work by using gear ratios to transfer power to the rear wheels. Run the air servo jam nut and o-ring up the threads on the servo. Lenco Racing Transmissions have brought more of their racing technology to the street crowd with a new transmission that is lighter, engineered with new technology, has more efficient components, and has less rotating mass than the previous unit. RATIO CHART 1.44% - Uses 20 tooth planet gears, a 32 tooth sun gear and a 73 tooth ring gear. You will need to add a LENCO reverse unit in order to back up. Likes Received: 180. Uses 225mm clutch pack in a reverse. When doing burnout's you need to roll up to the water box then shift all sections accept the front section. When this same section is shifted the Sprag then allows the sun gear to rotate in the same direction as thecrankshaft. 1.35%Uses 26 tooth planet gears, a 28 tooth sun gear and an 80 tooth ring gear. Run the air servo jam nut and o-ring up the threads on the servo. 1.41% Uses 23 tooth planet gears, a 32 tooth sun gear and a 79 tooth ring gear. Copyright 2020, Lenco Racing. If you already have a ST1200, you can upgrade your transmission with the new parts, ratios, and even new casing as all of the new upgraded components are compatible with the older units. A five speed requires four cases, and a six speed requires five cases. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. This change reduced any chance of casting imperfections and it offered more control over the final product. racing transmission, I believe the main difference between running ATF and 30wt engine oil is the speed in which the Lenco clutches can close up at the shift. The LENCO ST1200 is the answer for Pro Street and street/strip applications. 1.46% - Uses 22 tooth planet gears, a 37 tooth sun gear and a 80 tooth ring gear. By multiplying these three ratios you come up with a 2.46 first gear ratio. Air servos are specific to the type of Lenco you run so be sure to pick the correct one from the drop down menu. Pistol Grip Manual Shifter. This will allow for free play in the shift system. Skilled drivers can perform a clutchless shift without hurting their transmission, but it does take a little bit of a learning curve to get there. 1.68% Uses 15 tooth planet gears, a 62 tooth sun gear and a 91 tooth ring gear. A perfect replacement for expensive breakage prone Powerglides, Turbos, C4, C6 style and Torqueflite transmissions the Lencodrive is 100% Lenco. 1.25%(Small shaft gearset) Uses 32 tooth planet gears, a 22 tooth sun gear and a 86 tooth ring gear. As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds. The ST1200 is the same engineering design as the all-out-race New Generation CS2 but with a couple of minor differences. This is first gear. CS-1 style or center shift transmissions: Adding progressively different ratio independent gear housings behind each other allows Lenco to create two-speed, four-speed, five-speed, and even six-speed transmissions. Each sun and planet gearset provides two speeds. Posted 6 days ago. 1.25%(Large shaft gearset) Uses 36 tooth planet gears, a 25 tooth sun gear and a 98 tooth ring gear. Apply a small amount of Red (271) Locktite on the set screw. Watch it while someone pushes the shifter button. 1.28%Uses 32 tooth planet gears, a 25 tooth sun gear and a 89 tooth ring gear. Stay up to date with news and promotions by signing up for our monthlly newsletter. 1.356%Uses 23 tooth planet gears, a 26 tooth sun gear and a 73 tooth ring gear. 1.31% ratio uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. 1.22%Uses 38 tooth planet gears, a 22 tooth sun gear and a 98 tooth ring gear. 1 position forward selects 1st gear, then 2nd gear is selected by . Lenco drive clutch question | InsideTopAlcohol The middle case would also contain a 1.37 planet gear set. The ST1200 transmission is pure Lenco through and through and is ideally suited for nitrous, blown, injected and carbureted engines producing up to 1200 HP and 900 lb ft of torque. Additionally, the Lencodrive's main valve body is machined from billet components and is not the typically modified OEM Detroit component. Since internal combustion engines have a short torque band, we utilize transmissions to change the speed that the wheels spin by either using larger or shorter gear ratios. Warning: Do Not over tighten set screw. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. Final drive ratio is 1:1. The Sprag clutch is utilized in each shiftable section of the LENCO with the exception of the reverse. When locked, the gear's ratio is translated to the output shaft as the gear and the output shaft are now fixed. 1.73%Uses 14 tooth planet gears, a 76 tooth sun gear and 104 tooth ring gear. 1.25% ratio uses 32 tooth planet gears, a 22 tooth sun gear and an 86 thooth ring gear. 1.34% - Uses 24 tooth planet gears, a 25 tooth sun gear and a 74 tooth ring gear. Screw air servo counter-clockwise about five or six turns before you reassemble the transmission. Those two speeds are (1) the lower underdrive ratio and (2) the direct 1:1 final lock-up drive ratio. The ST1200 also utilizes aircraft quality bearings where the pure-race CS2 uses aerospace spec components. Again, in an effort to increase fuel economy, Vipers ship with tall 3.07:1 final drive ratios. The internal action of a LENCO is such that when the transmission is in first gear the chosen planet gear assembly provides the launch ratio. The three speed is approximately 135 lbs. This L.. Lenco Clutch Disk Alignment Tools areavailable in black anodized billetaluminum. Lenco, the all time champion and undisputed leader in the drag racing transmissions. Th.. In order to achieve an underdrive first gear launch ratio the LENCO transmission relys on planet gears which rotate around the sun gear. Because the ring gears are the final gear ratio of 1:1, a six-speed planetary transmission would consist of 5-planetary sections: 5 gear set ratios (sun gears) and a sixth gear when all of the planetary gear sections are locked together forming a 1:1 ratio. Smaller diameter and shorter length make this transmission a practical choice for use in restricted confines and instances when you have limited distance from the engine to the rear end. When this same section is shifted the Sprag then allows the sun gear to rotate in the same direction as the. Now rotate counter clockwise 1/2 to 1 turn and tighten lock nut. First, the top loader has three levers on the drivers side of the case, 1 is for 1st and 2nd gear, the next is for reverse, and the third is for 3rd and 4th gear. - Uses 28/38 tooth planet gears, a 23 tooth sun gear and a 91 tooth ring gear. When you shift into second gear a lockout happens which "locks" the sun gear, three planet gears, and the ring gear together so that they all spin in unison. Please call for ordering or technical information. Copyright 2020, Lenco Racing. 1.38%Uses 23 tooth planet gears, a 28 tooth sun gear and a 74 tooth ring gear. 1.438% Uses 20 tooth planet gears, a 32 tooth sun gear and a 73 tooth ring gear. The rear case a 1.31 ratio gearset. 1.21%Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. The gearset in the third case alone, 1.31:1, determines the third gear ratio. Air servo or max-adjust shift tower and lever. You can add additional cases and gearsets that will result in 3 or 4 speeds. Final drive ratio is 1:1. LENCO transmissions are a planetary design. 1.313%Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. 2 Speed + reverser with Std output: 17.500". Going to low on the pressure you get lazy shifts and faster transmission clutch wear requiring frequent changes. Toploader 4 speed shifter tech | Pirate 4x4 The Sprag clutch is utilized in each shiftable section of the LENCO with the exception of the reverse. The air servo is attached to a rotary shift plate by an adjustable arm which is pre-set by the factory and should NOT be changed. Lenco, the all time champion and undisputed leader in the drag racing transmissions. The Lenco Racing Lencodrive 3Speed Automatic Transmission represents our response to people wh.. If needed you may vary 1 full turn up or down from your 2 turns out in order to achieve the shift pressure desired. Air or lever shift. Due to the way they are designed and operate, the advantages are clear. Reverse is handled by a reverser section that is attached to the rear of the transmission. The Lencodrive does not require a containment blanket unless you use a supercharger or alternative fuels. Enough to make the run and turnoff before it releases. There are two different size air servos for the New Generation transmissions.The small air servo (2.5"piston diameter) and the large air servo(3"piston diameter) for the CS-2 large case transmission and Lencodrives. The ST1200 transmission is pure Lenco through and through and is ideally suited for nitrous, blown, injected and carbureted engines producing up to 1200 HP and 900 lb ft of torque. Do Not Over Tighten. Lenco Parts and Price List isavailable here. with its dedicated underdrive ratio, determines the immediate drive ratio. A perfect replacement for expensive breakage prone Powerglides, Turbos, C4, C6 style and Torqueflite transmissions the LENCODRIVE is 100% LENCO and will handle 2500 HP with ease. Low drag (angluar contact and needle bearings). 1.44% ratio uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. 1.56% - Uses 16 tooth planet gears, a 41 tooth sun gear and a 73 tooth ring gear. Traditional manual transmissions consist of at least two linear shafts: an inline input and output shaft, and a counter shaft. Typically the CS-1 and CS-3 run the 2.50" piston air servo (150 psi) and the CS-2 and Lenco drive runs the 3.00" piston (250 psi). 1.38% ratio uses 23 tooth planet gears, a 28 tooth sun gear and a 74 ytooth ring gear. Lenco Racing, the all time champion and undisputed leader in the drag racing. 4 speed. The CS1 will control up to 3000 HP. By multiplying thesethree ratios you come up with a 2.46 first gear ratio. at a lesser price than our full race units. 2 Speed + reverser with Pro output: 18.500". 4-Speed $9,830. The small air servo (2.5"piston diameter) and the large air servo(3"piston diameter) for the CS-2 large case transmission and Lencodrives. The main advantage of a lenco transmission is its simplicity. You must multiply each cases underdrive ratio in order to determine the first gear ratio. Light weight components. lenco cs3 5 speed. Screw air servo into case until it bottoms out against the jam nut. - Uses 24/28 tooth planet gears, a 23 tooth sun gear and a 78 tooth ring gear. This change cut down weight substantially which added to the overall rotational mass reduction. I do have three .080" shims, two .017" and six .027" shims. It makes a powerful and unique street transmission that offers Hot Rodders a gearbox that can handle up to 1200 horsepower reliably, while offering versatility to seamlessly change between an easy drive on the streets to racing hard on the weekend. LENCO racing transmission is a smaller, lighter and more compact version of our CS1 Standard Design. This is our double large sprag assembly and is used primarily in the boat applications, but has found its way into some car applications. For example, a three speed requires two cases. Reverse lever. These are the 5 weirdest transmissions ever sold | Driving 1.56%Uses 22 tooth planet gears, a 55 tooth sun gear and a 98 tooth ring gear. Lencodrives is a CS-2 transmission. It is not necessary for the driver to disengage the clutch when shifting from ratio to ratio since all shifting is done with the engines clutch fully engaged. LENCODRIVE Automatic This is a very extreme duty sprag assembly. Sight through plug hole, where you will see the outer edge of the rotary shift plate. 9. This is what comes standard in most new LENCO transmissions. Once all cases have been shifted the entire transmission assembly is locked in the final 1:1 direct drive ratio. Lenco, the all time champion and undisputed leader in the drag racing transmissions. Since all LENCO transmissions utilize the same internal gearing design you can easily change from a manual shift set This information leads to a selection of sun gears with associating ratios, ring gears, and properly sized planet gears that mate the sun gears to their ring gears. Those two speeds are (1) the lower underdrive ratio and (2) the direct 1:1 final lock-up drive ratio. We achieve more than two speeds by assembly of multiple cases. CS1 Standard Design the final shift, being locked to a 1:1 ratio. 1.25% (1.252) - Uses 24/28 tooth planet gears, a 23 tooth sun gear and a 78 tooth ring gear. Available in either bare aluminum (clear) or hard anodized black finish, you can choose the transmission finish that best suits your style; however, Lenco highly recommends the standard hard anodized black finish as transmissions usually live a hard life underneath a car where no one can see it, and where it is subject to lots of splashing and hits from rocks and other road debris. Rotate air servo into case until you see the set screw in the air servo piston boss inside the case. The Lenco is basically a planetary transmission where each gear has its own housing and its own shift lever. 1.28% Uses 32 tooth planet gear, a 25 tooth sun gear and an 89 tooth ring gear. There are a lot of variables. Lever or CO2 shift. 1.73% Uses 14 tooth planet gears, a 76 tooth sun gear and a 104 tooth ring gear. CS2, CS3, CS4 & Lencodrive or offset shift transmissions: Screw air servo in (clockwise) until you see the rotary plate start to shift, now screw air servo Out (counter-clockwise) until the rotary shift plate stops moving. Lenco Racing Releases New Billet Street Transmission - MotorTrend This is not possible with a traditional cluster gear transmission. 1.31%Uses 27 tooth planet gears, a 25 tooth sun gear and a 80 tooth ring gear. Three planetary gears rotate around the sun gear like planets traveling in their orbit. Run air servo jam nut and o-ring down against the case and tighten with a 1 1/2" wrench. Shift Patterns: All levers in forward position result in the transmission being in first gear. 300M Input/Cluster Shafts. Clutchless Shifting: What It Is & How to Do It Safely - Horsepowerful 1.41%Uses 23 tooth planet gears, a 32 tooth sun gear and an 79 tooth ring gear. The Lencodrive comes as a 2 speed with reverse. Gears that mesh easier suffer from less resistance, which leads to higher efficiency and less parasitic loss. The total amount of gear reduction depends on the amount of housings and the overall application of the transmission. In the example of a four-speed, the case nearest the engine would contain a 1.37 ratio planet gear set. 1.25% - Uses 34 tooth planet gears, a 23 tooth sun gear and a 91 tooth ring gear. The CS1 planetary gear size is 1". Lenco transmissions essentially combine the best of a manual and automatic transmission into one unit. The ST1200 gives you the advantage of Lenco brute strengthat a lesser price than our full race units. word-day-lightning-rods | News | Grassroots Motorsports All cases are magnesium. Thus a 1:1 ratio is achieved. The Lencodrive is the shortest and lightest torque converter driven transmission available anywhere. The LENCO Gear Reducer is used as a stand-alone unit or in conjunction with our CS1 Standard Design and CS2, CS3 and CS4 New Generation transmissions in order to employ tall rear gears with the advantage of a short launch ratio. The ST-1200 is not one of their most popular transmissions (they still sell more racing models), but it is the answer to many problems facing high-horsepower street cars and trucks that need a compromise between a stout race and street transmission. Add fluids as necessary and install fill plug. V-gate shifter for 4 and 5-speed Lenco | Page 2 | Yellow Bullet Forums Final drive ratio is 1:1. 1.50% Uses 22 tooth planet gears, a 44 tooth sun gear and an 88 tooth ring gear. They only serve to transfer the power of the ring gear to the planetary and to rotate around the sun gear if the sun gear is held stationary by the sprag clutch. Now rotate tower clockwise until it lightly touches pin on shift fork then rotate tower counter clockwise 2 turns and place hook of scale in top hole of checking lever supplied with transmission (this lever should be about 5 1/2" over all length) and pull scale slowly to shift section, taking note of highest reading this is your shift pressure. You must multiply each case's underdrive ratio in order to determine the first gear ratio. Lenco revamped the ST1200, by replacing sand molds with CNC 5 and 6-axis milling machines. When the transmission is shifted a clutch pack compresses the rotating sun gear assembly to the direct drive central sun gear. Most popular with Sand Dragsters, Mud racers and Modified pullers. All Lencodrives come with the following (less converter). automatic, Now rotate counter clockwise 1/2 to 1 turn and tighten lock nut. Chevy Pilot Bearing Assembly 1955-2000 Chevrolet (SB & BB), and Lenco transmissions. 1.405% Uses 23 tooth planet gears, a 32 tooth sun gear and an 79 tooth ring gear. 1.356% Uses 23 tooth planet gears, a 26 tooth sun gear and a 73 tooth ring gear. It might be less, it might be much more. Multiple speeds are achieved through utilization of multiple cases. Screw the servo into the transmission case until contact is made with the shift fork pin. .. All Lenco coupler clamps are machined from 7075 aircraft grade aluminum. Shift with either our patentedmulti lever system or with the optional, more compact CO2 setup. Other sections are added in a similar way: parts are pressed into casings, gears are added, and sections are bolted together in a repetitious manner. fine tuning your available power application to specific track conditions. Every track differs from day to day or hour to hour. Run the air servo jam nut and o-ring up the threads on the servo. In order to achieve an underdrive first gear launch ratio the LENCO transmission relies on planet gears which rotate around the sun gear. We found the small Sprags service life growing shorter and shorter, so we have discontinued it and highly recommend upgrading to our large Sprag assembly. You may choose any conventional input shaft spline. Going to high on the pressure shocks the transmission and drive-train. 1.25% Uses compound 25 and 29 tooth planet gears, a 25 tooth sun gear and a 76 tooth ring gear. But extreme cost-among other things--has always been a huge inhibitor for all but the stoutest of street-driven machinery. Copyright 2020, Lenco Racing. 3 Speed + reverser with Std output: 24.000". The planet gears are driven by an encompassrng flng gear. 1.16% Uses 21/36 tooth planet gears, a 22 tooth sun gear and a 79 tooth ring gear. All Rights Reserved. 1.48% ratio uses 22 tooth planet gears, a 40 tooth sun gear and an 83 tooth ring gear. 5.6K views, 84 likes, 1 loves, 13 comments, 17 shares, Facebook Watch Videos from Lenco Racing Transmissions, Inc.: David answers a few FAQ on CS-1 thru CS-4 Transmissions Its used to force the gear set to make it's ratio by preventing the sun gear from rotating in one direction. 3 speed. Other refinements are O-ring seals that replaced the the gasket seals between the transmission casings. Charlotte , NC. The Lenco provided unbreakable performance and lightening-quick gear changes, which made these clutchless wonders the tranny of choice among the ultimate door slammer crowd. Thus a 1:1 ratio is achieved. We do offer different thickness floaters for correcting the clutch pack clearance. 1.21%Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. Please call for ordering or technical information. The biggest benefit to Pro Streeters is that you don't have to worry about overheating, flashing the torque converter or other maintenance costs-as there are none. How is this done? Clutchless Transmission - Liberty's Gears The first speed is when the ring gear is rotating while the sun gear is stationary. By multiplying these three ratios you come up with a 2.46 first gear ratio. 1.23% Uses 21/30 tooth planet gears, a 25 tooth sun gear and a 76 tooth ring gear. Each sun and planet gearset provides two speeds. Multiply the two rear case gearset ratios to determine the second gear ratio of 1.80:1. of the adjustable shift tower plunger. Add fluids as necessary and install fill plug. 1.37% - Uses 26 tooth planet gears, a 31 tooth sun gear and a 83 tooth ring gear. Street and Drag Racing Transmissions - Engine Builder Magazine Lenco for street use | Team Chevelle Second gear ratio is 1.80 and third gear is a 1.31 ratio. Pressure set-up kit Our shift pressure set-up kit consists of a separate adjustment tower, lever, pull scale and chart of recommended pressures. Once all cases have been shifted the entire transmission assembly is locked in the final 1:1 direct drive ratio. If you want to go straight to the action, skip to around 2:20. Choice of standard or new generation reverses. transmissions, 1.31% ratio uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. 1.338%Uses 24 tooth planet gears, a 25 tooth sun gear and a 74 tooth ring gear. The rear axle is a Dana 44 with independent half-shafts. Since each case contains one gearset and provides both underdrive and direct drive, multiple cases provide multiple underdrive ratios. Large Strips and Clips Sprag Assembly - Thisis a specialized sprag and is used in applications where tire shake is a constant problem. Light weight ring gears (units w/27 and 32 spline shafts only). 1.29, 1.35, and 1.41 gear ratios have been added making a larger list of eight selectable gear ratios. Lenco trans oil ? | InsideTopAlcohol The 2 speed, including reverse, bellhousing and lining weighs approximately 108 lbs. Remove fill plug on top the transmission case you are going to adjust. INSTALLATION As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds.
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