Traditional manual transmissions consist of at least two linear shafts: an inline input and output shaft, and a counter shaft. 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. No further adjustments are necessary as there is ample reserve travel in the servo. Once all cases have been shifted the entire transmission assembly is locked in the final 1:1 direct drive ratio. Think of it as manually shifting an automatic transmission. The Lenco Racing Lencodrive 3Speed Automatic Transmission represents our response to people who have asked for a safe and affordable torque converter driven transmission. Unlike a traditional manual transmission with its singe shifter, planetary transmissions have multiple levers which are used to shift the transmission. Both transmissions are available in 2,3, 4 or 5 speeds. John, put a pressure guage at the shifter pod. 1.31% ratio uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. We acheive more than two speeds by combining multiple cases. In the example of a four speed, the case nearest the engine would contain a 1.37 ratioplanet gear set. 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. First you always start with at least one floater and then a clutch disc and repeat ending up with at least one floater. Shift Patterns: All levers in forward position result in the transmission being in first gear. Lencodrive Options: (option pricing only). If it takes over one second to reach full pressure at the pod, you have a restriction (regulator, line, button). 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. This is how we engage gears in a traditional manual transmission. The gearset in the third case alone, 1.31:1, determines the third gear ratio. Here's some fuzzy footage showing the operation. 1.19%Uses 21/33 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. It is sometimes necessary to have an extra floater disc to reach the desired clutch pack clearance and normally the extra floater would go next to the planet case. It uses a clutch and flywheel assembly only to engage the transmission into first and reverse . 1.28% - Uses 32 tooth planet gears, a 25 tooth sun gear and a 89 tooth ring gear. 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. Attach air lines and your race ready. With its larger size and more teeth, it rotates faster, so it spins the output shaft faster, which in turn spins the rear wheels faster. All Rights Reserved. It's a transmission that will set any street/strip car apart from the competition, with performance to match its new all-aluminum billet CNC looks. Air or lever shift. This is first gear. The Lenco assembly drawing shows two .030" shims on the front side of the plate and one .180" shim on the side where the pressure plate is. Each sun and planet gearset provides two speeds. 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. The truck runs a big-block Chevy that makes 1,100 horsepower on pump gas and lots of nitrous oxide. We got to ride along in an ST1200 equipped car, and what a monster of a car it was. Unfortunately, we no longer sale small Sprags do to the ever increasing horse power produced with today's motors. When this same section is shifted the Sprag then allows the sun gear to rotate in the same direction as the crankshaft. 3/4" Gear Set. Stay up to date with news and promotions by signing up for our monthlly newsletter. In order to achieve an underdrive first gear ratio the LENCO transmission relys on planet gears which rotate around the previously mentioned sun gear. There must be a minimum of .060" to a maximum of .090" of clearance between face of pilot bearing to beginning of clutch spline. LENCO racing transmission is a smaller, lighter and more compact version of our CS1 Standard Design. Each LENCO transmission is thus a two speed and is housed in one dedicated two speed. I use an electric over air setup to shift my new B and J transmission. Competition Eliminator, Super classes, Top Dragster and Pro Stock cars are typical classes where you will find the New Generation LENCO. Now rotate counter clockwise 1/2 to 1 turn and tighten lock nut. Its used to force the gear set to make it's ratio by preventing the sun gear from rotating in one direction. LENCODRIVE Automatic 1.20%Uses 22/32 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. This is a very extreme duty sprag assembly. This change reduced any chance of casting imperfections and it offered more control over the final product. 1. jody - even though i don't run a lencodrive and i have 2 bruno/lencos, i believe i can highlite some differences. The hard-anodized finish is meant to thrive in that environment, requiring no more than a quick wipe down with a damp rag, whereas the bare aluminum transmission would need more work to get it sparkling again. The CS1, CS2, CS3 and CS4 transmissions provide the perfect solution for harnessing the unique HP and torque output of boat engines. The ring gear is then pressed inside of the bearing. 1.68% Uses 15 tooth planet gears, a 62 tooth sun gear and a 91 tooth ring gear. The second lever, and second tallest, is used for third gear. When setting up your clutch packs they need to have the proper air gap or clutch pack clearance. Multiply all three gearset ratios to determine the first gear ratio of 2.46:1. 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. 1.48% Uses 22 tooth planet gears, a 40 tooth sun gear and a 83 tooth ring gear. Lever or CO2 shift. The boat clutch provides gentle engagement and disengagement. It has a selected gear ratio, and is the first speed of the transmission that is translated to the output shaft that drives the wheels. custom vertical gate shifter, push button downshifting. Lenco Transmissions utilize several different styles of clutch discs and depending of which style lenco you have you will also find different clutch counts in each case. In order to achieve an underdrive first gear launch ratio the LENCO transmission relys on planet gears which rotate around the sun gear. Then, continue to screw air servo Out (counter-clockwise) one half turn. Jeff says that it took him about two weeks to get used to the multi-lever shifter. Stay up to date with news and promotions by signing up for our monthlly newsletter. 1.46%Uses 22 tooth planet gears, a 37 tooth sun gear and an 80 tooth ring gear. 1.44% ratio uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. 1.313% Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. 1.479% Uses 19 tooth planet gears, a 35 tooth sun gear and an 73 tooth ring gear. (2) it is easier to work on the bruno/lenco . 1.21%Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. This is a very extreme duty sprag assembly. The arm must be free to move in all directions. The main advantage of a lenco transmission is its simplicity. Multiply the two rear case gearset ratios to determine the second gear ratio of 1.80:1. The CS-2 is much easier to work on than the CS-1. Do Not Over Tighten. Please click here for CS3 Timing Chart (.pdf). Final drive ratio is 1:1. 1.41% Uses 23 tooth planet gears, a 32 tooth sun gear and a 79 tooth ring gear. You must multiply each cases underdrive ratio in order to determine the first gear ratio. In the Lenco, the shift lever actually moves the clutch pack together to engage the gear in each housing. Since all LENCO transmissions utilize the same internal gearing design you can easily change from a manual shift set A large ring gear surrounds the entire solar system of gears. Call our technical department at (909) 673-9080 or email us here with any questions you may have concerning function or applications. Instead of molten aluminum being poured into a mold cavity making a casting, Lenco makes the new transmission casings out of a solid block of aluminum that is cut down by endmills. 4,600. 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 Lenco is basically a planetary transmission where each gear has its own housing and its own shift lever. 1.16%Uses 21/36 tooth planet gears, a 22 tooth sun gear and a 79 tooth ring gear. For additional information about Lenco products please email us here, or call us at (909) 673-9080. Sight through plug hole, where you will see the outer edge of the rotary shift plate. The planetary carrier that is holding the sun gear and planetary gears and clutch pack is placed inside the ring gear. 1.356%Uses 23 tooth planet gears, a 26 tooth sun gear and a 73 tooth ring gear. Planetary transmissions rely on a central sun gear to provide a 1:1 direct drive ratio once shifted from the launch ratio. 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. Magnesium Case. The position of the shift lever is relative to the application. If he shifts slower, the transmission shifts softer; if he shifts faster, the transmission shifts harder. Multiply the two rear case gearset ratios to determine the second gear ratio of 1.80:1. 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. 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. If needed you may vary 1 full turn up or down from your 2 turns out in order to achieve the shift pressure desired. street transmission, 1.44% ratio uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. 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. The first gear set is multiplied by the next, which is multiplied by any subsequent gears sets to eventually reach the final drive ratio of 1:1 where the output shaft is spinning as fast as the input shaft (or overdrive which is any ratio lower than 1 like .85:1). Choice of standard or new generation reverses. transmission, 1.16%Uses 21/36 tooth planet gears, a 22 tooth sun gear and a 79 tooth ring gear. ln general, all Lenco transmissions are a planetary design. The Lenco Racing ST1200 4 Speed Transmission has been specifically designed and engineered for severe duty street/strip applications. 1.56% Uses 22 tooth planet gears, a 55 tooth sun gear and a 98 tooth ring gear. Going to low on the pressure you get lazy shifts and faster transmission clutch wear requiring frequent changes. Thus a 1:1 ratio is achieved. For example, a three speed requires two cases. - Uses 24/28 tooth planet gears, a 23 tooth sun gear and a 78 tooth ring gear. 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. Although the initial cost is more than a well-built TH400, the longer durability and low-maintenance cost of the Lenco will pay for itself in the long run. If the first 300 feet of track is excellent, for instance, full shift pressure and instant lock-up may be desired. The counter shaft has fixed associating gears that are permanently meshed with the loosely connected gears on the output shaft. 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. Before you install the transmission you must measure the clearance between the pilot bearing end of the input shaft and the rear face of the pilot bearing. Sight through plug hole, where you will see the outer edge of the rotary shift plate. The ST1200 gives you the advantage of Lenco brute strengthat a lesser price than our full race units. 1.256% 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. 2 Speed + reverser with Std output: 17.500". Assemble next section on to case and bolt tight. Gears that mesh easier suffer from less resistance, which leads to higher efficiency and less parasitic loss. Since the 30 wt oil is thicker it takes a . Each case in succession, with its particular underdrive ratio, determines the immediate drive ratio. Now rotate counter clockwise 1/2 to 1 turn and tighten lock nut. Run air servo jam nut and o-ring down against the case and tighten with a 1 1/2" wrench. 1.313%Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. the shift pressure to maintain desired wheel speed and traction. 1.378%Uses 23 tooth planet gears, a 28 tooth sun gear and a 74 tooth ring gear. The ST1200 is the same engineering design as the all-out-race New Generation CS2 but with a couple of minor differences. If you want to go straight to the action, skip to around 2:20. Air or manual shift. With the extensive number of ratios we offer it is possible to choose from over 7,000 first gear combinations in the case of a four-speed for example. This is what comes standard in most new LENCO transmissions. Choice of ratio. The 2 speed, including reverse, bellhousing and lining weighs approximately 108 lbs. 1.23% Uses 21/30 tooth planet gears, a 25 tooth sun gear and a 76 tooth ring gear. We supply premium grade bearings in the ST1200 instead of the much more expensive aerospace-spec bearings as used in our race transmissions. 1.280%Uses 27 tooth planet gears, a 21 tooth sun gear and a 75 tooth ring gear. For example, a three speed requires two cases. 1.38% Uses 23 tooth planet gears, a 28 tooth sun gear and an 74 tooth ring gear. Recommended for cars making up to 1200 HP the ST1200 is pure LENCO through and through. Once engaged, the gears are shifted without a clutch. 1.24%Uses 26/31 tooth planet gears, a 23 tooth sun gear and an 80 tooth ring gear. the sun gear from rotating in one direction. 1.19% (1.191) - Uses 28/38 tooth planet gears, a 23 tooth sun gear and a 91 tooth ring gear. 1.297% Uses 26 tooth planet gears, a 22 tooth sun gear and a 74 tooth ring gear. Simply put, once the transmission is in gear, the power runs through a set of planetary gears. Lenco's transmissions can either be manually shifted or gas shifted with CO2. If a sun gear to ring gear has a ratio of 1.44, then the intermediate shaft that is attached to the planetary carrier is spinning at a 1.44 reduction in relation to the input shaft. 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. 1.356% Uses 23 tooth planet gears, a 26 tooth sun gear and a 73 tooth ring gear. 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. View the whole process and start at the beginning. Lenco Parts and Price List isavailable here. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. A perfect replacement for expensive breakage prone Powerglides, Turbos, C4, C6 style and Torqueflite transmissions the Lencodrive is 100% Lenco. $3,200. The middle case would also contain a 1.37 planet gear set. The sun gear only rotates when it is locked with the ring gear. the shift pressure to maintain desired wheel speed and traction. 1.35%Uses 26 tooth planet gears, a 28 tooth sun gear and an 80 tooth ring gear. This is an in-car shot video of Mike drag. 1.479%Uses 19 tooth planet gears, a 35 tooth sun gear and an 73 tooth ring gear. All transmissions work by using gear ratios to transfer power to the rear wheels. No further adjustments are necessary as there is ample reserve travel in the servo. This synchronizing gear is pushed onto the teeth of one of the two drive gears that it sits in-between, matching its speed and locking it into place. Again, in an effort to increase fuel economy, Vipers ship with tall 3.07:1 final drive ratios. The planet gears are driven by an encompassrng flng gear. The gearset in the third case alone, 1.31:1, determines the third gear ratio. 9310 steel would be used in Pro Stock, Pro Mod and other similar applications where substantially more HP, torque and tire plant is generated. 1.41% Uses 23 tooth planet gears, a 32 tooth sun gear and a 79 tooth ring gear. 150 is the usual middle starting point. lntroduced in 1972 as a 2-speed the Standard Design LENCO is our largest and strongest transmission. Once you have achieved the proper clearance reinstall the pressure plate spring and clutch housing snap ring it is then complete, ready for installation. This L.. Purchase the complete LENCO bell housing assembly or individual bellhousing components as needed. In order to achieve an underdrive first gear launch ratio the LENCO transmission relies on planet gears which rotate around the sun gear. Lenco Clutch Disk Alignment Tools areavailable in black anodized billetaluminum. The Lencodrive will accept virtually any manufacturer's torque converter. Attach air lines and your race ready. 1.73% Uses 14 tooth planet gears, a 76 tooth sun gear and a 104 tooth ring gear. 1.500%Uses 19 tooth planet gears, a 38 tooth sun gear and a 76 tooth ring gear. When doing burnout's you need to roll up to the water box then shift all sections accept the front section. Lenco, the all time champion and undisputed leader in the drag racing transmissions. Magnesium case is standard. To select any gear (ie 1st gear) the other two levers (3/4th & reverse) must be in the neutral (center) position. 1.438%Uses 20 tooth planet gears, a 32 tooth sun gear and a 73 tooth ring gear. Rotate air servo into case until you see the set screw in the air servo piston boss inside the case. When locked, the gear's ratio is translated to the output shaft as the gear and the output shaft are now fixed. 1.438% Uses 20 tooth planet gears, a 32 tooth sun gear and a 73 tooth ring gear. This change cut down weight substantially which added to the overall rotational mass reduction. Burnout's (on all LENCOS): All levers in forward position result in the transmission being in first gear. 5-Speed $10,660. Engineered to handle 3500+ HP the Standard Design LENCO is available with up to 5 speeds and comes in a cast magnesium case. Chevy Pilot Bearing Assembly 1955-2000 Chevrolet (SB & BB), and Lenco transmissions. 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 A typical lever shift assembly Consists of hand levers, activation rods, detent levers, rod towers, adjustment nuts, clevises, heim ends, friction washers, mounting bracket and all Now taking all the lash out by lifting up on the clutch housing (outer housing) and press down on the pressure plate then measure the distance between the top of the pressure and the bottom of the snap ring groove of the clutch housing, This is your clutch pack clearance. 1.17% (1.165) - Uses 22/38 tooth planet gears, a 24 tooth sun gear and an 84 tooth ring gear. All Rights Reserved. You always need to come out of the water box in high gear to prolong the life of the transmission. Assemble next section on to case and bolt tight. A perfect replacement for expensive breakage prone Powerglides, Turbos, C4, C6 style and Torqueflite transmissions the Lencodriveis 100% Lenco. When this occurs, the ring gear becomes the dominant gear1:1 (final drive ratio). When you select a gear, the gear shaft moves a synchronizing gear that looks like a toothed collar. 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. The middle case would also contain a 1.37 planet gear set. Jeff Turner's street driven 600hp on motor/800hp on a 200-shot of nitrous "race for money" license platted 1966 Pontiac GTO took us for a spin. When this same section is shifted the Sprag then allows the sun gear to rotate in the same direction as the. 300M Input/Cluster Shafts. By multiplying these three ratios you come up with a 2.46 first gear ratio. 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. 1.41%Uses 23 tooth planet gears, a 32 tooth sun gear and an 79 tooth ring gear. Reverse is a small black lever. Copyright 2020, Lenco Racing. It's capacity is much stronger than the small sprag. With a selection of 16 first-gear ratios for the two-speed and hundreds more for three-speeds the LENCODRIVE presents you with the opportunity to dial-in your exact combination. Exclusively V.A.R. Screw the servo into the transmission case until contact is made with the shift fork pin. I shift it with a timed switch getting its signal from an electric shifter box so that it applies voltage for 17 sec at the shift. Most often seen in supercharged alcohol and mega HP nitrous cars the CS1 Standard Design LENCO is also commonly used by Pro Mod machines and blown nitro and alcohol drag boats. 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. CS-1 style or center shift transmissions: Once all cases have been shifted the entire transmission assembly is locked in the final 1:1 direct drive ratio. Run air servo jam nut and o-ring down against the case and tighten with a 1 1/2" wrench. 1.41% - Uses 24 tooth planet gears, a 34 tooth sun gear and a 83 tooth ring gear. 1.35% Uses 26 tooth planet gears, a 28 tooth sun gear and a 80 tooth ring gear. Lenco, the all time champion and undisputed leader in the drag racing transmissions. It is bolted to the end of the transmission with a splined output shaft which will await the driveshaft yoke. If you want to go straight to the action, skip to around 2:20. 1.50%Uses 22 tooth planet gears, a 44 tooth sun gear and an 88 tooth ring gear. necessary hardware. In all instances you will require a LENCO reverse unit to achieve reverse movement. 1.38% Uses 23 tooth planet gears, a 28 tooth sun gear and an 74 tooth ring gear. 1.48% ratio uses 22 tooth planet gears, a 40 tooth sun gear and an 83 tooth ring gear. 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. On the track, however, the low 48 percent first gear should be enough to launch any powerful car hard, and the transmission's history of performance won't let anyone down. Thus a 1:1 ratio is achieved. Likes Received: 180. We achieve more than two speeds by assembly of multiple cases. Shift with either our patented. Material Gears. 5 likes, 0 comments - Dale's Transmission (@dalesa1transmission) on Instagram: "Weird Transmission Wednesday The Lenco Lenco is not the only manufacturer of these types ." Dale's Transmission on Instagram: "Weird Transmission Wednesday The Lenco Lenco is not the only manufacturer of these types of transmissions, but it is . With a docile nature and racing pedigree, the new ST1200 improves upon the old, making a great transmission even better with improved technology, refined parts, and lower rotational mass for faster acceleration. The 4-speed above shows how to determine drive ratios. The Lencodrive is pure Lenco through-and-through with the same gearset components as our CS2. The Sprag clutch is utilized in each shiftable section of the LENCO with the exception of the reverse. 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) Those two speeds are (1) the lower underdrive ratio and (2) the direct 1:1 final lock-up drive ratio. 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 1.20% Uses compound 22 and 32 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. This in-car shot video shows a Mopar powered engine combined with the clutch-less Lenco Transmission that produces over 850 real Mopar horsepower!!! 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. With a simple shift pressure adjustment you can easily compensate The next lever is used for fourth gear and final lever for fifth. Air servos are machined from billet alum. 1.38% ratio uses 23 tooth planet gears, a 28 tooth sun gear and a 74 ytooth ring gear. 1.38% ratio uses 23 tooth planet gears, a 28 tooth sun gear and a 74 ytooth ring gear. Now rotate counter clockwise 1/2 to 1 turn and tighten lock nut. Due to the way they are designed and operate, the advantages are clear. e30 m52 turbo. First you need to determine which style clutch packs you are working onsee chart. 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. Shown with our boat bellhousing. When this same section is shifted the Sprag then allows the sun gear to rotate in the same direction as thecrankshaft. Clutchless shifting is the practice of changing or shifting your gear without touching the left bar lever. Available in single o.. Lenco couplers are machined from 8620 aircraft quality steel and heat treated for for severe duty se.. The LENCO gear reduction unit - with a range of 31% to 56%-helps get you off the starting line. We acheive more than two speeds by combining multiple cases. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . Gear ratios are selected using a mathematical calculation that considers both the number of speeds required, horsepower of the car, and final rearend drive ratio. Add fluids as necessary and install fill plug. When you add the fact that this car is a manual, it really makes this drag racing video a rare one to enjoy.
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