1.479%Uses 19 tooth planet gears, a 35 tooth sun gear and an 73 tooth ring gear. This can cause tire shake. 1.38% Uses 23 tooth planet gears, a 28 tooth sun gear and an 74 tooth ring gear. The shifting process removes multiplication factors and subsequently results in all gear-sets, after - Uses 22/38 tooth planet gears, a 24 tooth sun gear and an 84 tooth ring gear. 1.46%Uses 22 tooth planet gears, a 37 tooth sun gear and an 80 tooth ring gear. 1.50%Uses 22 tooth planet gears, a 44 tooth sun gear and an 88 tooth ring gear. bellhousing patterns - Ford, GM, MoPar and our own five-bolt design. 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. Once all cases have been shifted the entire transmission assembly is locked in the final 1:1 direct drive ratio. The CS1 Standard Design LENCO is recommended for the most severe applications and is capable of repeatable consistency with a minimum of maintenance. 1.22% Uses compound 21 and 30 tooth planet gears, a 24 tooth sun gear and a 75 tooth ring gear. Three planetary gears rotate around the sun gear like planets traveling in their orbit. 9. The Lencodrive does not require a containment blanket unless you use a supercharger or alternative fuels. Add bellhousing depth to above lengths for total length: Lenco aluminum, Titanium or Browell steel: 7.200". 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. This L.. Purchase the complete LENCO bell housing assembly or individual bellhousing components as needed. Each case in succession, with its particular underdrive ratio, determines the immediate drive ratio. All levers in forward position result in the transmission being in first gear. Lenco has gone through a lot of changes in the past year, with a new owner and new location, the team at Lenco set out to redesign, revamp, and redefine the ST1200 street transmission as the new . We do offer different thickness floaters for correcting the clutch pack clearance. The CS2 ,CS3, and CS4 LENCO racing transmission is a smaller, lighter and more compact version of our CS1 Standard Design. By multiplying these three ratios you come up with a 2.46 first gear ratio. 1.24% Uses 26/31 tooth planet gears, a 23 tooth sun gear and an 80 tooth ring gear. I purchased the trans disassembled and do not have the shim configuration shown in the drawing. automatic, It is bolted to the end of the transmission with a splined output shaft which will await the driveshaft yoke. Second gear ratio is 1.80 and third gear is a 1.31 ratio. LENCO transmissions are a planetary design. Lenco, the all time champion and undisputed leader in the drag racing transmissions. Please click here for CS3 Timing Chart (.pdf). With a simple shift pressure adjustment you can easily compensate We can supply practica.. Lenco Racingthrowout bearing collars are machined from premium aircraft grade billet aluminum .. All three units shifted equal final drive ratio of 1:1. 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. word-day-lightning-rods | News | Grassroots Motorsports 1.31% Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. 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. 1.41%Uses 23 tooth planet gears, a 32 tooth sun gear and an 79 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. 1.38% ratio uses 23 tooth planet gears, a 28 tooth sun gear and a 74 ytooth ring gear. Tags: Shifters - Lenco Racing Transmissions It only has two moving parts, the belt itself and a shaft that connects it to other components in the vehicle or machine. When you add the fact that this car is a manual, it really makes this drag racing video a rare one to enjoy. Each case in succession, with its particular underdrive ratio, determines the immediate drive ratio. Screw air servo counter-clockwise about five or six turns before you reassemble the transmission. Copyright 2020, Lenco Racing. All levers in forward position result in the transmission being in first gear. Lever or CO2 shift. It's capacity is much stronger than the small sprag. 1.41% Uses 23 tooth planet gears, a 32 tooth sun gear and a 79 tooth ring gear. The planetary carrier that is holding the sun gear and planetary gears and clutch pack is placed inside the ring gear. The Lencodrive is the shortest and lightest torque converter driven transmission available anywhere. The Lenco Racing Lencodrive 3Speed Automatic Transmission represents our response to people wh.. If, however, the track is loose from 300 through 500 you can soften 2 Speed + reverser with Std output: 17.500". 1.28% Uses 32 tooth planet gear, a 25 tooth sun gear and an 89 tooth ring gear. The only exception is replacing the pressure plate and resurfacing the flywheel after a long period of use, and frequently changing the transmission fluid about every 400-500 miles. As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds. Small Sprag Assembly -This is a our small Sprag, note the snap ring in the outer race and single brass thrust washer. 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 Reverse is handled by a reverser section that is attached to the rear of the transmission. 1.16%Uses 21/36 tooth planet gears, a 22 tooth sun gear and a 79 tooth ring gear. This pressure adjustability gives you considerable control when There are a lot of variables. 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. You must multiply each cases underdrive ratio in order to determine the first gear ratio. Originally the ST1200 was only offered with a selection of five gear ratios (1.25, 1.31, 1.38, 1.44, and 1.48). Building a Lenco ST1200 starts with constructing the soul of the transmission: assembling its planetary gear sets. 3 speed. The tallest to the right is used to shift the transmission from first to second gear. 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. 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 The middle case would also contain a 1.37 planet gear set. It has an electric solenoid that receives air from an adjustable regulator. This will allow for free play in the shift system. This intermediate shaft connects this planetary gear set to subsequent planetary gear sets which make up the modular nature of this transmission. Magnesium case is standard. These are the 5 weirdest transmissions ever sold | Driving 1.20% Uses compound 22 and 32 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. Rotate air servo into case until you see the set screw in the air servo piston boss inside the case. 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. 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 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. Magnesium Case. 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. Lenco downshifting - YouTube 1.22% Uses compound 21 and 30 tooth planet gears, a 24 tooth sun gear and a 75 tooth ring gear. Yes, there are 18 different car gearbox types - MSN Reverse Lockout. All cases are magnesium. 1.41% - Uses 24 tooth planet gears, a 34 tooth sun gear and a 83 tooth ring gear. The CS-2 is much easier to work on than the CS-1. In order to achieve an underdrive first gear launch ratio the LENCO transmission relys on planet gears which rotate around the sun gear. Apply a small amount of Red (271) Locktite on the set screw. We acheive more than two speeds by combining multiple cases. Although there have been many attempts to create similar shifters for stock-type transmissions, Chevy enthusiasts have long aspired to duplicate the multi-lever design of the Lenco for their hot street machines. Once all cases have been shifted the entire transmission assembly is locked in the final 1:1 direct drive ratio. 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. 1.25% (1.252) - Uses 24/28 tooth planet gears, a 23 tooth sun gear and a 78 tooth ring gear. Dale's Transmission on Instagram: "Weird Transmission Wednesday The In the Lenco, the shift lever actually moves the clutch pack together to engage the gear in each housing. lenco air shift options | InsideTopAlcohol Attach air lines and your race ready. Assemble next section on to case and bolt tight. 5-Speed $10,660. Since the taller ring and pinion have more tooth area contact they are more reliable and less prone to breakage. This unique clutch is a very popular replacement for clunky V-drive dog style in-out boxes. As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds. Lenco, the all time champion and undisputed leader in the drag racing transmissions. 1.35%Uses 26 tooth planet gears, a 28 tooth sun gear and an 80 tooth ring gear. racing transmission, I've mounted it where It's most comfortable for me. Think of it as manually shifting an automatic transmission. The rear case a 1.31 ratio gearset. Choice of standard or new generation reverses. Clutchless shifting is the practice of changing or shifting your gear without touching the left bar lever. Recommended for cars making up to 1200 HP the ST1200 is pure LENCO through and through. This is not possible with a traditional cluster gear transmission. Purpose designed and produced for drag, ski and river boat requirements. 1.28% Uses 32 tooth planet gear, a 25 tooth sun gear and an 89 tooth ring gear. 1.256% Uses 32 tooth planet gears, a 22 tooth sun gear and a 86 tooth ring gear. Gary Sumek of Lenco mentioned that they have been producing a five-speed street version for a few years. For example, a three speed requires two cases. ln general, all Lenco transmissions are a planetary design. The total amount of gear reduction depends on the amount of housings and the overall application of the transmission. Tags: We acheive more than two speeds by combining multiple cases. The CS1 planetary gear size is 1". 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. Add fluids as necessary and install fill plug. The version 2 of the ST1200 transmission, builds upon that great design with an all-aluminum billet CNC casing, double O-ring seals, hardened anodized finish, and a larger choice of gear ratios for perfect fine tuning of gear ratios. Stay up to date with news and promotions by signing up for our monthlly newsletter. Technical Support - Lenco Racing Transmissions No further adjustments are necessary as there is ample reserve travel in the servo. 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. 1.20%Uses 22/32 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. 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. You can expand to 3 or 4 speeds by addition of additional cases. The arm is held into the servo piston by a set screw. Once engaged, the gears are shifted without a clutch. There must be a minimum of .060" to a maximum of .090" of clearance between face of pilot bearing to beginning of clutch spline. The downside of this setup is that the shafts are only supported on their ends, so the shaft can bend with torque. The Lenco Racing ST1200 4 Speed Transmission has been specifically designed and engineered for severe duty street/strip applications. 1.22%Uses 21/30 tooth planet gears, a 24 tooth sun gear and a 75 tooth ring gear. These four gears (sun gear and three planet gears) sit in a planetary carrier that holds them together as a unit. 1.48% Uses 22 tooth planet gears, a 40 tooth sun gear and a 83 tooth ring gear. Pistol Grip Manual Shifter. 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. Lenco for street use | Team Chevelle 1.479% Uses 19 tooth planet gears, a 35 tooth sun gear and an 73 tooth ring gear. Available in single o.. Lenco couplers are machined from 8620 aircraft quality steel and heat treated for for severe duty se.. I've made provision, so that shift lever can be moved to the back of the trans quite easily. 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. The Lencodrive's trans-brake is controlled by an electric solenoid which activates hydraulic compression of a dedicated clutch pack. They work by using a sun gear that is also attached to a sprag clutch, three planet gears, and a ring gear. The 1 1/4 is the best and used in Top Alcohol and Pro Mod. All transmissions, once assembled, have to be installed in a car. for all your racing needs, LENCO transmissions are a planetary design. Porsche 911-06 side shift transmission for 914 4 or 6. 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. 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. jody - even though i don't run a lencodrive and i have 2 bruno/lencos, i believe i can highlite some differences. 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. 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. 1.44% ratio uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. How To Shift A Lenco Transmission ? - Answerlic Large low drag bearings, that the planetary gears will float on, are pressed into the casings. 1.46% - Uses 22 tooth planet gears, a 37 tooth sun gear and a 80 tooth ring gear. Burnout's(on all LENCOS): 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. 1.16% Uses 21/36 tooth planet gears, a 22 tooth sun gear and a 79 tooth ring gear. Multiple speed transmissions use multiplication of gears to create different speeds. (only on CS-1 style or center shift transmissions): Air shifted LENCOS come pre adjusted from the factory. Likes Received: 180. 2 Speed with single brg and std output: 16.875". The next lever is used for fourth gear and final lever for fifth. Lenco, the all time champion and undisputed leader in the drag racing transmissions. 1.338% Uses 24 tooth planet gears, a 25 tooth sun gear and a 74 tooth ring gear.
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