how to shift a lenco transmissionfaron korok seeds

Each sun and planet gearset provides two speeds. Now rotate counter clockwise 1/2 to 1 turn and tighten lock nut. 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, R577980 Raybestos Gen2 (Blue) Apply a small amount of Red (271) Locktite on the set screw. 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. When this same section is shifted the Sprag then allows the sun gear to rotate in the same direction as the crankshaft. John, put a pressure guage at the shifter pod. It's capacity is much stronger than the small sprag. In all instances the transmission is then shifted to a 1:1 direct drive ratio by depression Since each case contains one gearset and provides both underdrive and direct drive, multiple cases (gearsets) provide multiple underdrive ratios. New and Used Parts The middle case would also contain a 1.37 planet gear set. 1.313%Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. The LENCO gear reduction unit - with a range of 31% to 56%-helps get you off the starting line. Since all LENCO transmissions utilize the same internal gearing design you can easily change from a manual shift set The CS2 ,CS3, and CS4 The rear case a 1.31 ratio gearset. The ST1200 is available with all popularbellhousing patterns - Ford, GM, MoPar and our own five-bolt design. Each sun and planet gearset represents two speeds. for all your racing needs, LENCO transmissions are a planetary design. up to the CO2 configuration or vice versa. Rotate air servo into case until you see the set screw in the air servo piston boss inside the case. Planetary transmissions rely on a central sun gear to provide a 1:1 direct drive ratio once shifted from the launch ratio. automatic, As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds. 1.338%Uses 24 tooth planet gears, a 25 tooth sun gear and a 74 tooth ring gear. Lenco Racing, the all time champion and undisputed leader in the drag racing. This is a 1971-72 901 transmission converted for use as a side shift 914 gearbox. If it is necessary to remove the servos you should reinstall with the lock nut spun completely to the top of its travel. 1.25%(Small shaft gearset) Uses 32 tooth planet gears, a 22 tooth sun gear and a 86 tooth ring gear. 9. When this occurs, the ring gear becomes the dominant gear1:1 (final drive ratio). Large Sprag Assembly -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. 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. You always need to come out of the water box in high gear to prolong the life of the transmission. The CS2 handles up to 3000 HP; CS3 and CS4 1800 HP. 9310 steel would be used in Pro Stock, Pro Mod and other similar applications where substantially more HP, torque and tire plant is generated. 1.256%Uses 32 tooth planet gears, a 22 tooth sun gear and a 86 tooth ring gear. The second lever, and second tallest, is used for third gear. 1.378% Uses 23 tooth planet gears, a 28 tooth sun gear and a 74 tooth ring gear. What kind of clutch you run is a big factor. 1.68% Uses 15 tooth planet gears, a 62 tooth sun gear and a 91 tooth ring gear. 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. For more specific information on any of these Lenco transmissions please refer to the Tabs below, or call our tech line at(909) 673-9080. What this means in practice is you use the clutch pedal to engage first and reverse . 1.356% Uses 23 tooth planet gears, a 26 tooth sun gear and a 73 tooth ring gear. Assemble next section on to case and bolt tight. Lenco Racing Transmissions celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. 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. Low drag (angluar contact and needle bearings). The Lenco Racinggear reduction unit, when used in conjunction with our CS1, CS2, CS3, or CS4 t.. Lenco Racingmachines our input shafts from 300M and Marage stock. 1.50% Uses 22 tooth planet gears, a 44 tooth sun gear and an 88 tooth ring gear. Warning: Do Not over tighten set screw. Planetary transmissions rely on a central sun gear to provide a 1:1 direct drive ratio once shifted from the launch ratio. from DarkSide 1.38% ratio uses 23 tooth planet gears, a 28 tooth sun gear and a 74 ytooth ring gear. 1.31% ratio uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. This is a very extreme duty sprag assembly. 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. Final drive ratio is 1:1. Going to high on the pressure shocks the transmission and drive-train. Stay up to date with news and promotions by signing up for our monthlly newsletter. multi lever system or with the optional, more compact CO2 setup. This will allow for free play in the shift system. Reverse Lockout. Refining the machining process of how the gears are made and even designed resulted in more efficient gears that mesh together easier than the previous version. A five speed requires four cases, and a six speed requires five cases. 1.356%Uses 23 tooth planet gears, a 26 tooth sun gear and a 73 tooth ring gear. The internal action of a LENCO is such that when the transmission is in first gear the dedicated planet gear assembly provides the launch ratio. 1.297% Uses 26 tooth planet gears, a 22 tooth sun gear and a 74 tooth ring gear. Lenco Parts and Price List isavailable here. The 2 speed, including reverse, bellhousing and lining weighs approximately 108 lbs. 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. The final section is the reverser. This unique clutch is a very popular replacement for clunky V-drive dog style in-out boxes. Since each case contains one gearset and provides both underdrive and direct drive, multiple cases provide multiple underdrive ratios. Ourblue,greenandtandisc are supplied new at approximately .058"- .061" thickness. Also, a hp/tq rating on a transmission does not mean it will actually hold that much. The Lencodrive is available with your choice of all popular bellhousing patterns as well as any starter pocket positioning. First gear is the furthest lever from the driver with higher gears being the nearest levers. We can supply practica.. Lenco Racingthrowout bearing collars are machined from premium aircraft grade billet aluminum .. You may choose any conventional input shaft spline. We offer Turbo 400, C6, Mega and standard Powerglide size input shafts per your requirements. Leaving the pressure plate spring (wave spring) out, place the pressure plate on top of the clutch pack. Call our technical department at (909) 673-9080 or email us here with any questions you may have concerning function or applications. The sun gear is the center of the mechanism's universe. The rear case a 1.31 ratio gearset. Remember that each separate case contains it own The ST1200 also utilizes aircraft quality bearings where the pure-race CS2 uses aerospace spec components. 1.280%Uses 27 tooth planet gears, a 21 tooth sun gear and a 75 tooth ring gear. Burnout's (on all LENCOS): There is also a blue disc and a tan disc both of these styles come in one size. The Lenco Racing Lencodrive is the automatic answer for people who prefer torque converter/automatic transmission applications. CS2, CS3, CS4 & Lencodrive or offset shift transmissions: Proving itself to be a dependable and excellent option that fits with the blending of racing and street-driven cars, the dual clutch transmission has taken manual transmission performance to a whole new level. Lenco transmissions essentially combine the best of a manual and automatic transmission into one unit. Traditional manual transmissions consist of at least two linear shafts: an inline input and output shaft, and a counter shaft. As with the CS1 Standard Design, the New Generation CS2, CS3 and CS4 can be shifted by lever or our CO2 system. 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. 1.20% Uses compound 22 and 32 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. When locked, the gear's ratio is translated to the output shaft as the gear and the output shaft are now fixed. Screw the servo into the transmission case until contact is made with the shift fork pin. Lenco transmissions were first made popular in the early '70s when NHRA Pro Stockers needed a gearbox that was up to the task of 9-second elapsed times. When the transmission is shifted a clutch pack compresses the rotating sun gear assembly to the direct drive central sun gear. Lenco's transmissions can either be manually shifted or gas shifted with CO2. Once engaged, the gears are shifted without a clutch. ST1200 Street Strip In general, all LENCO transmissions are a planetary design. When discs wear to .052" or less they must be replaced. Burnout's(on all LENCOS): In order to achieve an underdrive first gear launch ratio the LENCO transmission relies on planet gears which rotate around the sun gear. A LENCO launch ratio is determined by the sun and planet gear ratio. gearset/ratio and when connected to additional cases multiple ratios are realized. To demonstrate the inner workings of the Lenco ST-1200 transmission, we followed along as one was being assembled for use in Truckin' Magazine's World's Fastest Street Legal Pickup. First you need to determine which style clutch packs you are working onsee chart. - Uses 22/38 tooth planet gears, a 24 tooth sun gear and an 84 tooth ring gear. This action compresses an internal clutch pack which results in a final driveratio of 1:1. The three speed is approximately 135 lbs. 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. The result is LENCO quality and durability at a reasonable "Street Machine" price. When doing burnout's you need to roll up to the water box then shift all sections accept the front section. Shift Patterns: 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. 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. $3,200. This can cause tire shake. Operation of a Lenco is fairly straight-forward: When it's time to shift gears, simply pull the appropriate lever, with each gear having its own stick. Material Gears. the shift pressure to maintain desired wheel speed and traction. When other gears are selected the synchronizer is placed back in the center of the gear and another synchronizer is activated, repeating the same sliding, matching, and locking maneuver to another set of drive gears. Remove fill plug on top the transmission case you are going to adjust. Th.. Large low drag bearings, that the planetary gears will float on, are pressed into the casings. Air servos are machined from billet alum. LENCO transmissions are a planetary design. 1.38% Uses 23 tooth planet gears, a 28 tooth sun gear and an 74 tooth ring gear. 1.21% Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. 1.405%Uses 23 tooth planet gears, a 32 tooth sun gear and an 79 tooth ring gear. 3. Shifters and lockouts can be either style. 1.16%Uses 21/36 tooth planet gears, a 22 tooth sun gear and a 79 tooth ring gear. 1.68% Uses 15 tooth planet gears, a 62 tooth sun gear and a 91 tooth ring gear. These new gear offerings allow Lenco to meet any customer's needs, and allows customers to fine tune their transmission and rear end setup to their hearts desire. CS-1 style or center shift transmissions: If the shift pressure is set to your application lock the jam nut your finished, if not you then need to add shim to raise pressure or subtract shim to reduce pressure. 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. 1.566% Uses 18 tooth planet gears, a 45 tooth sun gear and an 81 tooth ring gear. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. 1.31% Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. Race prepped Hydramatic. Air or Lever Shift. Every track differs from day to day or hour to hour. Thus a 1:1 ratio is achieved. 1.21%Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. This gadget employed three shift levers to accomplish everything that a single lever could do. The possible combinations are endless! We happen to run synthetic AFT. 1. Each case in succession, with its particular underdrive ratio, determines the immediate drive ratio. All transmissions are the sum of their parts. I purchased the trans disassembled and do not have the shim configuration shown in the drawing. The three speed is approximately 135 lbs. All Rights Reserved. Sight through plug hole, where you will see the outer edge of the rotary shift plate. necessary hardware. The first speed is when the ring gear is rotating while the sun gear is stationary. 1.378%Uses 23 tooth planet gears, a 28 tooth sun gear and a 74 tooth ring gear. Multiple speeds are achieved through utilization of multiple cases. Light weight components. Lencodrive 4 Speed. 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". We got to ride along in an ST1200 equipped car, and what a monster of a car it was. 1. jody - even though i don't run a lencodrive and i have 2 bruno/lencos, i believe i can highlite some differences. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. Three planetary gears rotate around the sun gear like planets traveling in their orbit. All Lencodrives come with the following (less converter). 1.46% - Uses 22 tooth planet gears, a 37 tooth sun gear and a 80 tooth ring gear. You could not make small adjustments, so owners had to be selective in their transmission and rearend gear choices. When you add the fact that this car is a manual, it really makes this drag racing video a rare one to enjoy. 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. Double Large Sprag Assembly -This is our double large sprag assembly and is used primarily in the boat applications, but has found its way into some car applications. Unlike a traditional manual transmission with its singe shifter, planetary transmissions have multiple levers which are used to shift the transmission. Then, continue to screw air servo Out (counter-clockwise) one half turn. If you want to go straight to the action, skip to around 2:20. Choice of standard or new generation reverses. Here's some fuzzy footage showing the operation. 1.28%Uses 32 tooth planet gears, a 25 tooth sun gear and a 89 tooth ring gear. In the example of a four speed, the case nearest the engine would I use an electric over air setup to shift my new B and J transmission. 2 Speed + reverser with Pro output: 18.500". On the street five-speed model the ratios start at 3.25 in first gear, 2.26 in second, 1.64 in third, 1.25 in fourth, and fifth gear is 1:1. The ring gear is then pressed inside of the bearing. The position of the shift lever is relative to the application. 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. 1.22%Uses 38 tooth planet gears, a 22 tooth sun gear and a 98 tooth ring gear. Apply a small amount of Red (271) Locktite on the set screw. Lenco, the all time champion and undisputed leader in the drag racing transmissions. sr1200, Posted 6 days ago. We recommend that you discuss your application with our technical representatives and follow their suggestions on which 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. It is bolted to the end of the transmission with a splined output shaft which will await the driveshaft yoke. Shift Patterns: All levers in forward position result in the transmission being in first gear. Do Not Over Tighten. Recommended for cars making up to 1200 HP the ST1200 is pure LENCO through and through. racing transmission, 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. Also known as a 'crash' gearbox for the noise it can make with a mis-timed shift, the non-synchromesh transmission is now only usually found in some trucks. 3 speed. The next lever is used for fourth gear and final lever for fifth. The simplicity also makes them easy to repair if something goes wrong . The tallest to the right is used to shift the transmission from first to second gear. . So, a transmission may have a first gear ratio of 2.47, a second gear ratio of 1.80, a third of 1.31, as the transmission works its way down to its final drive ratio of 1:1 where the output shaft that drives the wheels is spinning as fast as the input shaft which is attached to the motor. 3 Speed + reverser with Std output: 24.000". Equipped with a Lenco ST1200 5-speed transmission, Jeff regularly drives his car on the streets around his home in Oceanside, CA. 1.19% (1.191) - Uses 28/38 tooth planet gears, a 23 tooth sun gear and a 91 tooth ring gear. Glazed, burned and chipped discs must also be replaced immediately. It uses a clutch and flywheel assembly only to engage the transmission into first and reverse . 1.56%Uses 22 tooth planet gears, a 55 tooth sun gear and a 98 tooth ring gear. A large sprag clutch is attached on to the sun gear of the planetary carrier finishing the transmission section. LENCO racing transmission is a smaller, lighter and more compact version of our CS1 Standard Design. If, however, the track is loose from 300 through 500 you can soften The choice is yours. 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. 1.35% Uses 26 tooth planet gears, a 28 tooth sun gear and a 80 tooth ring gear. The arm must be free to move in all directions. the sun gear from rotating in one direction. Porsche 911-06 side shift transmission for 914 4 or 6. Call the Hurst Lightning Rods, a popular sight in a mid-'80s issue of Hot Rod, a road-going take on a Lenco transmission. contain a 1.37 ratio planet gear set. Again, in an effort to increase fuel economy, Vipers ship with tall 3.07:1 final drive ratios. Once installed, make sure the air servo is loose and can turn freely. It has an electric solenoid that receives air from an adjustable regulator. Stay up to date with news and promotions by signing up for our monthlly newsletter. Thus a 1:1 ratio is achieved. This is what comes standard in most new LENCO transmissions. To address this, Lenco added more gear ratios, particularly ratios which were half-steps to fill in the gaps so that a customer could fine tune their system without the pesky large leap that used to happen. The Lencodrive is the shortest and lightest torque converter driven transmission available anywhere. 1.28% Uses 32 tooth planet gear, a 25 tooth sun gear and an 89 tooth ring gear. Those two speeds are (1) the lower underdrive ratio and (2) the direct 1:1 final lock-up drive ratio. 1.20%Uses 22/32 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. 1.44% Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. CS1 Standard Design A typical CO2 shifting assembly Consists of either a small or large CO2 bottle, bottle brackets, pressure gauges, pressure adjustable shift buttons, air servo, pressure line, fittings and Pressure set-up kit Our shift pressure set-up kit consists of a separate adjustment tower, lever, pull scale and chart of recommended pressures. The rear axle is a Dana 44 with independent half-shafts. 1.31%Uses 27 tooth planet gears, a 25 tooth sun gear and a 80 tooth ring gear. Jeff says that he loves the transmission and "the only thing different [from driving a traditional gearbox] is that there is no engine braking". The second lever, and second tallest, is used for third gear. What does this mean, you wonder? Those two speeds are (1) the lower underdrive ratio and (2) the direct'1:1 final lock-up drive ratio. Multiply the two rear case gearset ratios to determine the second gear ratio of 1.80:1. 1.20%Uses 40 tooth planet gears, a 21 tooth sun gear and a 102 tooth ring gear. transmission, Any new EXTREME transmission is available set up for a Torque Converter Drive Unit at no extra charge. Chevy Pilot Bearing Assembly 1955-2000 Chevrolet (SB & BB), and Lenco transmissions. 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. LENCODRIVE Automatic 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. The shifting process removes multiplication factors and subsequently results in all gear-sets, after All transmissions work by using gear ratios to transfer power to the rear wheels. 1.368% Uses 21 tooth planet gears, a 25 tooth sun gear and an 74 tooth ring gear. Other refinements are O-ring seals that replaced the the gasket seals between the transmission casings. and control slippage. 1.16% Uses 21/36 tooth planet gears, a 22 tooth sun gear and a 79 tooth ring gear. The internal action of a LENCO is such that when the transmission is in first gear the dedicated planet gear assembly provides the launch ratio. There are a variety of both manual and CO2 servo tower designs. Each LENCO transmission is thus a two speed and is housed in one dedicated two speed. No alterations to the transmission, other than the external operating system itself, are required. 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). When the transmission is shifted a clutch pack compresses the rotating sun gear assembly to the direct drive central sun gear. 1.41% Uses 23 tooth planet gears, a 32 tooth sun gear and a 79 tooth ring gear. .. All Lenco coupler clamps are machined from 7075 aircraft grade aluminum. Final drive ratio is 1:1. The Lenco Racing Lencodrive is the automatic answer for people who prefer torque converter/automatic transmission applications. 1.48%Uses 22 tooth planet gears, a 40 tooth sun gear and a 83 tooth ring gear. The gearset in the third case alone, 1.31:1, determines the third gear ratio. Those two speeds are (1) the lower underdrive ratio and (2) the direct 1:1 final lock-up drive ratio. - Uses 30/35 tooth planet gears, a 23 tooth sun gear and a 90 tooth ring gear. All LENCO transmissions operate in basically the same way and if you have any questions about servicing your trans please call our tech line at (909) 673-9080. The CS-2 is much easier to work on than the CS-1. To install lever remove bolt, insert lever in shift tower so that it faces forward and install bolt. 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. Different Sizes -LENCO utilizes several different styles and sizes of sprags depending on which application the transmission is used for. When the installed lever is loose that section is in low and when the lever is tight the sections in high. If he shifts slower, the transmission shifts softer; if he shifts faster, the transmission shifts harder.

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