The Lencodrives come with three different shafts, a Ford, a GM, and a 1 1/4. The next lever is used for fourth gear and final lever for fifth. Lenco trans oil ? | InsideTopAlcohol Shown with our boat bellhousing. 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. The arm is held into the servo piston by a set screw. Dale's Transmission on Instagram: "Weird Transmission Wednesday The Traditional manual transmissions consist of at least two linear shafts: an inline input and output shaft, and a counter shaft. Different Sizes -LENCO utilizes several different styles and sizes of sprags depending on which application the transmission is used for. Lenco Racing, the all time champion and undisputed leader in the drag racing. The middle case would also contain a 1.37 planet gear set. All levers in forward position result in the transmission being in first gear. LENCO transmissions are shipped with the shift levers removed in order to prevent damage during shipping. Three planetary gears rotate around the sun gear like planets traveling in their orbit. There is also a blue disc and a tan disc both of these styles come in one size. You must multiply each case's underdrive ratio in order to determine the first gear ratio. The tallest to the right is used to shift the transmission from first to second gear. What this means in practice is you use the clutch pedal to engage first and reverse . The arm must be free to move in all directions. Air servos or max-adjust shift towers. 1.35% Uses 26 tooth planet gears, a 28 tooth sun gear and a 80 tooth ring gear. $3,200. When discs wear to .052" or less they must be replaced. The result is LENCO quality and durability at a reasonable "Street Machine" price. EASY SHIFTING with David Sumek | David answers a few FAQ on - Facebook When you add the fact that this car is a manual, it really makes this drag racing video a rare one to enjoy. All cases are magnesium. The CS-2 is much easier to work on than the CS-1. Enough to make the run and turnoff before it releases. Final drive ratio is 1:1. The possible combinations are endless! Lenco transmissions essentially combine the best of a manual and automatic transmission into one unit. Since all LENCO transmissions utilize the same internal gearing design you can easily change from a manual shift set Run air servo jam nut and o-ring down against the case and tighten with a 1 1/2" wrench. 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. Thus a 1:1 ratio is achieved. multi lever system or with the optional, more compact CO2 setup. 1.25% Uses compound 25 and 29 tooth planet gears, a 25 tooth sun gear and a 76 tooth ring gear. The middle case would also contain a 1.37 planet gear set. Th.. from DarkSide Likes Received: 180. V-gate shifter for 4 and 5-speed Lenco | Page 2 | Yellow Bullet Forums 1.73% Uses 14 tooth planet gears, a 76 tooth sun gear and a 104 tooth ring gear. It's capacity is much stronger than the small sprag. 1.35% Uses 26 tooth planet gears, a 28 tooth sun gear and a 80 tooth ring gear. Lencodrive 3 Speed and Reverse | Lenco It is also 2-lbs lighter for lower rotational mass which translates to quicker acceleration. sr1200, The arm must be free to move in all directions. Stay up to date with news and promotions by signing up for our monthlly newsletter. The shift lever is almost the same height as the standard 5th gear lever. 1.46% - Uses 22 tooth planet gears, a 37 tooth sun gear and a 80 tooth ring gear. 1.48%- Uses 22 tooth planet gears, a 40 tooth sun gear and an 83 tooth ring gear. The position of the shift lever is relative to the application. The Lenco is basically a planetary transmission where each gear has its own housing and its own shift lever. 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. Lenco CS1 Assembly Help | Yellow Bullet Forums See(input diagram). 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. Screw air servo into case until it bottoms out against the jam nut. 3 Speed + reverser with Std output: 24.000". Lenco, the all time champion and undisputed leader in the drag racing transmissions. The three speed is approximately 135 lbs. This worked for the vast majority of consumers, but it left a lot of gaps that prevented fine tuning of a combination because the spacing between the ratios was so spread out. Copyright 2020, Lenco Racing. the final shift, being locked to a 1:1 ratio. 1.34% - Uses 24 tooth planet gears, a 25 tooth sun gear and a 74 tooth ring gear. for all your racing needs, LENCO transmissions are a planetary design. 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 . Once all cases have been shifted the entire transmission assembly is locked in the final 1:1 direct drive ratio. The Lenco Racing Lencodrive 2 Speed Automatic Transmission represents our response to people who hav.. Thus a 1:1 ratio is achieved. Air or manual shift. Add fluids as necessary and install fill plug. 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. Transmissions and Clutches, Racing Transmissions for sale on RacingJunk Going to low on the pressure you get lazy shifts and faster transmission clutch wear requiring frequent changes. 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 1.44% Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. This will allow for free play in the shift system. 1.44% - Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. This is what comes standard in most new LENCO transmissions. When doing burnout's you need to roll up to the water box then shift all sections accept the front section. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. New and Used Parts If, however, the track is loose from 300 through 500 you can soften The LENCODRIVE is the automatic answer for people who prefer torque converter/automatic transmission applications. Lencodrive Options: (option pricing only). Multiply the two rear case gearset ratios to determine the second gear ratio of 1.80:1. Second gear ratio is 1.80 and third gear is a 1.31 ratio. The choice is yours. The rear case a 1.31 ratio gearset. 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. 1.73%Uses 14 tooth planet gears, a 76 tooth sun gear and 104 tooth ring gear. This in-car shot video shows a Mopar powered engine combined with the clutch-less Lenco Transmission that produces over 850 real Mopar horsepower!!! When the transmission is shifted a clutch pack compresses the rotating sun gear assembly to the direct drive central sun gear. All Rights Reserved. Call our technical department at (909) 673-9080 or email us here with any questions you may have concerning function or applications. This can cause tire shake. I've made provision, so that shift lever can be moved to the back of the trans quite easily. The Lencodrive comes as a 2 speed with reverse. - Uses 28/38 tooth planet gears, a 23 tooth sun gear and a 91 tooth ring gear. 1.20%Uses 22/32 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. This L.. Purchase the complete LENCO bell housing assembly or individual bellhousing components as needed. You must multiply each case's underdrive ratio in order to determine the first gear ratio. Lenco, the all time champion and undisputed leader in the drag racing transmissions. (1) in the bruno/lenco the fluids are seperate - which gives you options of running different fluid types and no chance of breaking the lenco side and mixing it into the converter. Lenco revamped the ST1200, by replacing sand molds with CNC 5 and 6-axis milling machines. 1.21% Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. LENCODRIVE Automatic For example, a three speed requires two cases. When doing burnout's you need to roll up to the water box then shift all sections accept the front section. With a simple shift pressure adjustment you can easily compensate. 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 Think of it as manually shifting an automatic transmission. The CS1, CS2, CS3 and CS4 transmissions provide the perfect solution for harnessing the unique HP and torque output of boat engines. Unfortunately, we no longer sale small Sprags do to the ever increasing horse power produced with today's motors. Manual 2 Speed with Neutral Safety [DRIVE-2-S], Manual 3 Speed with Neutral Safety [DRIVE-3-S], Manual 4 Speed with Neutral Safety [DRIVE-4-S], Lockout Shift with Neutral Safety [DRIVE-L-S]. The Sprag clutch is utilized in each shiftable section of the LENCO with the exception of the reverse. It is bolted to the end of the transmission with a splined output shaft which will await the driveshaft yoke. The arm is held into the servo piston by a set screw. 1.19% Uses 21/33 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring 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. Each case in succession. 1.368%Uses 21 tooth planet gears, a 25 tooth sun gear and an 74 tooth ring gear. LENCO transmissions are a planetary design. The CS1 will control up to 3000 HP. A BorgWarner T56 six-speed transmission was used in the Viper; automatics have never been available. Uses 225mm clutch pack in a reverse. 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 1 1/4 is the best and used in Top Alcohol and Pro Mod. Apply a small amount of Red (271) Locktite on the set screw. Stay up to date with news and promotions by signing up for our monthlly newsletter. Lenco's transmissions can either be manually shifted or gas shifted with CO2. drag racing, Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. The tallest to the right is used to shift the transmission from first to second gear. Burnout's (on all LENCOS): 1.46%Uses 22 tooth planet gears, a 37 tooth sun gear and an 80 tooth ring gear. Second gear ratio is 1.80 and third gear is a 1.31 ratio. 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. 1.68% Uses 15 tooth planet gears, a 62 tooth sun gear and a 91 tooth ring gear. Building a Lenco ST1200 starts with constructing the soul of the transmission: assembling its planetary gear sets. LENCO racing transmission is a smaller, lighter and more compact version of our CS1 Standard Design. Attach air lines and your race ready. 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. 1.41% Uses 23 tooth planet gears, a 32 tooth sun gear and a 79 tooth ring gear. fine tuning your available power application to specific track conditions. All transmissions, once assembled, have to be installed in a car. CS-1 style or center shift transmissions: If it takes over one second to reach full pressure at the pod, you have a restriction (regulator, line, button). Magnesium Case. View the whole process and start at the beginning. Multiply the two rear case gearset ratios to determine the second gear ratio of 1.80:1. Planetary transmissions rely on a central sun gear to provide a 1:1 direct drive ratio once shifted from the launch ratio. The arm must be free to move in all directions. The original ST1200 came with a cast aluminum case, gasket seals, and a range of selectable gear ratios. Lenco, the all time champion and undisputed leader in the drag racing transmissions. Leaving the pressure plate spring (wave spring) out, place the pressure plate on top of the clutch pack. If you want to go straight to the action, skip to around 2:20. 1.23%Uses 21/30 tooth planet gears, a 25 tooth sun gear and a 76 tooth ring gear. The lever arms also vary in length. 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. 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. In the example of a four speed, the case nearest the engine would contain a 1.37 ratioplanet gear set. - Uses 22/38 tooth planet gears, a 24 tooth sun gear and an 84 tooth ring gear. The final section is the reverser. 1.20% Uses 22/32 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. This will allow for free play in the shift system. Call the Hurst Lightning Rods, a popular sight in a mid-'80s issue of Hot Rod, a road-going take on a Lenco transmission. The Lencodrive is the shortest and lightest torque converter driven transmission available anywhere. 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. Easy to use and necessary for fine tuning Take the Hurst Lightning Rods, an aftermarket performance shifter marketed in the 1980s. In order to achieve an underdrive first gear launch ratio the LENCO transmission relies on planet gears which rotate around the sun gear. <lol> Trust me, It's no where near shoulder height ! The Lenco Racing Lencodrive 4Speed Automatic Transmission represents our response to people wh.. At the time of your inital order, you may add additional sections to your Lencodrive Automatic Lenco.. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. 1.22% Uses compound 21 and 30 tooth planet gears, a 24 tooth sun gear and a 75 tooth ring gear. 1.22% (1.219) - Uses 30/35 tooth planet gears, a 23 tooth sun gear and a 90 tooth ring gear. Copyright 2020, Lenco Racing. The boat clutch provides gentle engagement and disengagement. Chevy Pilot Bearing Assembly 1955-2000 Chevrolet (SB & BB), and Lenco transmissions. Then start the tires spinning, now shift the front section so that you are now in high gear. Run air servo jam nut and o-ring down against the case and tighten with a 1 1/2" wrench. Gary Sumek of Lenco mentioned that they have been producing a five-speed street version for a few years. 1.25% (1.252) - Uses 24/28 tooth planet gears, a 23 tooth sun gear and a 78 tooth ring gear. 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. You may choose any conventional input shaft spline. When the installed lever is loose that section is in low and when the lever is tight the sections in high. Every track differs from day to day or hour to hour. All Rights Reserved. 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. Planetary transmissions rely on a central sun gear to provide a 1:1 direct drive ratio once shifted from the launch ratio. The Lencodrive is pure Lenco through-and-through with the same gearset components as our CS2. Ourblue,greenandtandisc are supplied new at approximately .058"- .061" thickness. The Lencodrive comes as a 2 speed with reverse. 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. 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. Each lever controls one planetary gear set. 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. Final drive ratio is 1:1. The gearset in the third case alone, 1.31:1, determines the third gear ratio. 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. Planetary transmissions rely on a central sun gear to provide a 1:1 direct drive ratio once shifted from the launch ratio. 1. jody - even though i don't run a lencodrive and i have 2 bruno/lencos, i believe i can highlite some differences. Screw the servo into the transmission case until contact is made with the shift fork pin. automatic, It might be less, it might be much more. Originally the ST1200 was only offered with a selection of five gear ratios (1.25, 1.31, 1.38, 1.44, and 1.48). Gear Ratio Reducer 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. Each sun and planet gearset provides two speeds. Each case in succession, with its particular underdrive ratio, determines the immediate drive ratio. Polishing the shift fork helps a lot for consistent shifts. Shift pressure is adjustable, whether it be for one case, all cases or anindividual case in a multiple case configuration. Apply a small amount of Red (271) Locktite on the set screw. Lenco burnout procedures | InsideTopAlcohol 1. Adjustment: 1.68% Uses 15 tooth planet gears, a 62 tooth sun gear and a 91 tooth ring gear. Input shaft. Additionally, the Lencodrive's main valve body is machined from billet components and is not the typically modified OEM Detroit component. 1.56%Uses 22 tooth planet gears, a 55 tooth sun gear and a 98 tooth ring gear. All three units shifted equal final drive ratio of 1:1. Material Gears. racing transmission, The rear case a 1.31 ratio gearset. Lenco Racing Releases New Billet Street Transmission - MotorTrend Choice of ratio. 1.25% - Uses 34 tooth planet gears, a 23 tooth sun gear and a 91 tooth ring gear. Changing gears and setting it up is the same for the CS-2 and the Lencodrive. The CS2 handles up to 3000 HP; CS3 and CS4 1800 HP. 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. ln general, all Lenco transmissions are a planetary design. 1.22%Uses 21/30 tooth planet gears, a 24 tooth sun gear and a 75 tooth ring gear. Street and Drag Racing Transmissions - Engine Builder Magazine Rotate air servo into case until you see the set screw in the air servo piston boss inside the case. 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 leader in street planetary transmissions. ST1200 Street Strip When this same section is shifted the Sprag then allows the sun gear to rotate in the same direction as the crankshaft. Lenco Transmission Overview Reverse is handled by a reverser section that is attached to the rear of the transmission. 1.48% ratio uses 22 tooth planet gears, a 40 tooth sun gear and an 83 tooth ring gear. These four gears (sun gear and three planet gears) sit in a planetary carrier that holds them together as a unit. CS1 Standard Design First gear is the furthest lever from the driver with higher gears being the nearest levers. If he shifts slower, the transmission shifts softer; if he shifts faster, the transmission shifts harder. Multiply all three gearset ratios to determine the first gear ratio of 2.47:1. Since each case contains one gearset and provides both underdrive and direct drive,multiple cases (gearsets) provide multiple underdrive ratios. These are the 5 weirdest transmissions ever sold | Driving This means that it can run for years without any maintenance and still operate smoothly. Do Not Over Tighten. 2 Speed + reverser with Std output: 17.500". 1.28% - Uses 32 tooth planet gears, a 25 tooth sun gear and a 89 tooth ring gear. The ST1200 also utilizes aircraft quality bearings where the pure-race CS2 uses aerospace spec components. Each LENCO transmission is thus a two-speed and is housed in its single dedicated case. Boat Transmissions and Boat Clutches All Rights Reserved. 150 is the usual middle starting point. 1.500%Uses 19 tooth planet gears, a 38 tooth sun gear and a 76 tooth ring gear. Magnesium cases are used for both the CS2, CS3 and CS4. 1.566%Uses 18 tooth planet gears, a 45 tooth sun gear and an 81 tooth ring gear. All Rights Reserved. This is not possible with a traditional cluster gear transmission. It's capacity is much stronger than the small sprag. As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds. 1.256%Uses 32 tooth planet gears, a 22 tooth sun gear and a 86 tooth ring gear. We offer Turbo 400, C6, Mega and standard Powerglide size input shafts per your requirements. Other refinements are O-ring seals that replaced the the gasket seals between the transmission casings. Screw the servo into the transmission case until contact is made with the shift fork pin. 1.41%Uses 23 tooth planet gears, a 32 tooth sun gear and an 79 tooth ring gear. Mountains Garage: How To Shift A Lenco Racing Transmission lntroduced in 1972 as a 2-speed the Standard Design LENCO is our largest and strongest transmission. 1.17% (1.165) - Uses 22/38 tooth planet gears, a 24 tooth sun gear and an 84 tooth ring gear. Recommended for cars making up to 1200 HP the ST1200 is pure LENCO through and through. 1.38%Uses 23 tooth planet gears, a 28 tooth sun gear and a 74 tooth ring gear. The dual clutch manual transmission is simply fast. To add more speeds to a planetary transmission you add more sections. You can add additional cases and gearsets that will result in 3 or 4 speeds. The 2 speed, including reverse, bellhousing and lining weighs approximately 108 lbs. 1.25% ratio uses 32 tooth planet gears, a 22 tooth sun gear and an 86 thooth ring gear. We do offer different thickness floaters for correcting the clutch pack clearance. 1.20% Uses compound 22 and 32 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. I purchased the trans disassembled and do not have the shim configuration shown in the drawing. Stay up to date with news and promotions by signing up for our monthlly newsletter. Its used to force the gear set to make it's ratio by preventing the sun gear from rotating in one direction. The next lever is used for fourth gear and final lever for fifth. Lencodrives is a CS-2 transmission. In all instances you will require a LENCO reverse unit to achieve reverse movement. Upshifting is very commonly done this way, but you can also do it while downshifting. A first-to-fourth skip-shift solenoid is used on the transmission to help increase fuel economy. Since each case contains one gearset and provides both underdrive and direct drive, multiple cases (gearsets) provide multiple underdrive ratios. In all instances the transmission is then shifted to a 1:1 direct drive ratio by depression custom vertical gate shifter, push button downshifting. The Lencodrive is available with your choice of all popular bellhousing patterns as well as any starter pocket positioning. 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. This is an in-car shot video of Mike drag racing his 73 Duster using a clutch-less Lenco Transmission. 1.500% Uses 19 tooth planet gears, a 38 tooth sun gear and a 76 tooth ring gear. All Rights Reserved. .. All Lenco coupler clamps are machined from 7075 aircraft grade aluminum. 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 gadget employed three shift levers to accomplish everything that a single lever could do. 1.48% ratio uses 22 tooth planet gears, a 40 tooth sun gear and an 83 tooth ring gear. This is a 1971-72 901 transmission converted for use as a side shift 914 gearbox. Stay up to date with news and promotions by signing up for our monthlly newsletter. We recommend that you discuss your application with our technical representatives and follow their suggestions on which 3 Speed with single brg and std output: 23.375". The only difference is that in an automatic, the transmission fluid moves internal valves to close the clutch pack. Section upon section are bolted together until the transmission takes shape, growing taller than the technician building it. 1.35%Uses 26 tooth planet gears, a 28 tooth sun gear and an 80 tooth ring gear. Lenco offers an extensive variety of transmissions. When locked, the gear's ratio is translated to the output shaft as the gear and the output shaft are now fixed. Each planetary gear set is in its own housing and carries a higher ratio. direct drive - with reverser / Cannon to control clutch arm position, Screw the servo into the transmission case until contact is made with the shift fork pin. The CS2 ,CS3, and CS4 lenco cs3 5 speed. Each LENCO transmission is thus a two speed and is housed in one dedicated two speed case. They opted to use the Lenco ST-1200 as it would be a great opportunity to show the tranny's durability and strength by running the truck on both the track and street.

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