Watch it while someone pushes the shifter button. Shift with either our patentedmulti lever system or with the optional, more compact CO2 setup. Exclusively V.A.R. The position of the shift lever is relative to the application. 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. Once you have achieved the proper clearance reinstall the pressure plate spring and clutch housing snap ring it is then complete, ready for installation. Screw the servo into the transmission case until contact is made with the shift fork pin. The Lencodrive is the shortest and lightest torque converter driven transmission available anywhere. Screw air servo into case until it bottoms out against the jam nut. Multiple speed transmissions use multiplication of gears to create different speeds. V-gate shifter for 4 and 5-speed Lenco | Page 2 | Yellow Bullet Forums These four gears (sun gear and three planet gears) sit in a planetary carrier that holds them together as a unit. Reverse Lockout. (2) it is easier to work on the bruno/lenco . 1. 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 Light weight ring gears (units w/27 and 32 spline shafts only). We do offer different thickness floaters for correcting the clutch pack clearance. The biggest benefit to Pro Streeters is that you don't have to worry about overheating, flashing the torque converter or other maintenance costs-as there are none. LENCO racing transmission is a smaller, lighter and more compact version of our CS1 Standard Design. To select any gear (ie 1st gear) the other two levers (3/4th & reverse) must be in the neutral (center) position. The Lenco Racing Lencodrive 3Speed Automatic Transmission represents our response to people wh.. As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds. As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds. Thus a 1:1 ratio is achieved. You must multiply each case's underdrive ratio in order to determine the first gear ratio. As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds. Tags: Clutchless shifting is the practice of changing or shifting your gear without touching the left bar lever. LENCO transmissions are a planetary design. Lenco, the all time champion and undisputed leader in the drag racing transmissions. Every track differs from day to day or hour to hour. 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 . This intermediate shaft connects this planetary gear set to subsequent planetary gear sets which make up the modular nature of this transmission. Remember that each separate case contains it own 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. 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. When the transmission is shifted a clutch pack compresses the rotating sun gear assembly to the direct drive central sun gear. Each sun and planet gearset represents two speeds. This is first gear. In order to achieve an underdrive first gear launch ratio the LENCO transmission relies on planet gears which rotate around the sun gear. It is not necessary for the driver to disengage the clutch when shifting from ratio to ratio. 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). The total amount of gear reduction depends on the amount of housings and the overall application of the transmission. Shifters - Lenco Racing Transmissions There are a variety of both manual and CO2 servo tower designs. 9. 1.41%Uses 23 tooth planet gears, a 32 tooth sun gear and an 79 tooth ring gear. 1.48% Uses 22 tooth planet gears, a 40 tooth sun gear and a 83 tooth ring gear. Attach air lines and your race ready. Engineered to handle 3500+ HP the Standard Design LENCO is available with up to 5 speeds and comes in a cast magnesium case. Pressure set-up kit Our shift pressure set-up kit consists of a separate adjustment tower, lever, pull scale and chart of recommended pressures. For example, a three speed requires two cases. Those two speeds are (1) the lower underdrive ratio and (2) the direct 1:1 final lock-up drive ratio. 1.68% - Uses 15 tooth planet gears, a 62 tooth sun gear and a 91 tooth ring gear. Multiply the two rear case gearset ratios to determine the second gear ratio of 1.80:1. 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. 1.22%Uses 21/30 tooth planet gears, a 24 tooth sun gear and a 75 tooth ring gear. The arm must be free to move in all directions. The Lencodrive comes as a 2 speed with reverse. Once installed, make sure the air servo is loose and can turn freely. The arm is held into the servo piston by a set screw. 1.24%Uses 26/31 tooth planet gears, a 23 tooth sun gear and an 80 tooth ring gear. Stay up to date with news and promotions by signing up for our monthlly newsletter. A LENCO launch ratio is determined by the sun and planet gear ratio. 1.68% Uses 15 tooth planet gears, a 62 tooth sun gear and a 91 tooth ring gear. 1.38% Uses 23 tooth planet gears, a 28 tooth sun gear and an 74 tooth ring gear. 1.28%Uses 32 tooth planet gears, a 25 tooth sun gear and a 89 tooth ring gear. 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. You may choose any conventional input shaft spline. 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. No further adjustments are necessary as there is ample reserve travel in the servo. Then start the tires spinning, now shift the front section so that you are now in high gear. John, put a pressure guage at the shifter pod. 1.73%Uses 14 tooth planet gears, a 76 tooth sun gear and 104 tooth ring gear. Copyright 2020, Lenco Racing. 1.35% Uses 26 tooth planet gears, a 28 tooth sun gear and a 80 tooth ring gear. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. 1.479% Uses 19 tooth planet gears, a 35 tooth sun gear and an 73 tooth ring gear. Unfortunately, we no longer sale small Sprags do to the ever increasing horse power produced with today's motors. Lenco for street use | Team Chevelle All levers in forward position result in the transmission being in first gear. 1.31% ratio uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. When the transmission is shifted a clutch pack compresses the rotating sun gear assembly to the direct drive central sun gear. The result is LENCO quality and durability at a reasonable "Street Machine" price. Ourblue,greenandtandisc are supplied new at approximately .058"- .061" thickness. Run the air servo jam nut and o-ring up the threads on the servo. Adding progressively different ratio independent gear housings behind each other allows Lenco to create two-speed, four-speed, five-speed, and even six-speed transmissions. 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. fine tuning your available power application to specific track conditions. Add bellhousing depth to above lengths for total length: Lenco aluminum, Titanium or Browell steel: 7.200". The middle case would also contain a 1.37 planet gear set. Rotate air servo into case until you see the set screw in the air servo piston boss inside the case. 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. Clutchless Shifting: What It Is & How to Do It Safely - Horsepowerful A first-to-fourth skip-shift solenoid is used on the transmission to help increase fuel economy. The Lencodrives come with three different shafts, a Ford, a GM, and a 1 1/4. Lenco, the all time champion and undisputed leader in the drag racing transmissions. Uses 225mm clutch pack in a reverse. The Lencodrive will accept virtually any manufacturer's torque converter. The possible combinations are endless! We achieve more than two speeds by assembly of multiple cases. Since the taller ring and pinion have more tooth area contact they are more reliable and less prone to breakage. 1.368% Uses 21 tooth planet gears, a 25 tooth sun gear and an 74 tooth ring gear. Lenco Transmissions Tech | www.darkside.ca 1.21%Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. Magnesium Case. 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. 1.37% - Uses 26 tooth planet gears, a 31 tooth sun gear and a 83 tooth ring gear. 1.25%(Large shaft gearset) Uses 36 tooth planet gears, a 25 tooth sun gear and a 98 tooth ring gear. The planet gears are driven by an encompassing ring gear. Each LENCO transmission is thus a two speed and is housed in one dedicated two speed. Each planetary gear set is in its own housing and carries a higher ratio. 1.22%Uses 38 tooth planet gears, a 22 tooth sun gear and a 98 tooth ring gear. sr1200, Or maybe simply a T56 magnum is all you need. Due to the way they are designed and operate, the advantages are clear. When you shift into second gear a lockout happens which "locks" the sun gear, three planet gears, and the ring gear together so that they all spin in unison. The next lever is used for fourth gear and final lever for fifth. A large ring gear surrounds the entire solar system of gears. Stay up to date with news and promotions by signing up for our monthlly newsletter. Burnout's (on all LENCOS): 1 position forward selects 1st gear, then 2nd gear is selected by . 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. EASY SHIFTING with David Sumek | David answers a few FAQ on - Facebook Stay up to date with news and promotions by signing up for our monthlly newsletter. 1.44% Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. Multiply all three gearset ratios to determine the first gear ratio of 2.46:1. 1.22% Uses compound 21 and 30 tooth planet gears, a 24 tooth sun gear and a 75 tooth ring gear. ST1200 4 Speed with Reverse and Shifter | Lenco In all instances you will require a LENCO reverse unit to achieve reverse movement. Lencodrive 3 Speed. CS-1 style or center shift transmissions: Choice of standard or new generation reverses. The main advantage of a lenco transmission is its simplicity. 1.23% Uses 21/30 tooth planet gears, a 25 tooth sun gear and a 76 tooth ring gear. 1.479%Uses 19 tooth planet gears, a 35 tooth sun gear and an 73 tooth ring gear. Shift with either our patented. Apply a small amount of Red (271) Locktite on the set screw. Now rotate tower clockwise until it lightly touches pin on shift fork then rotate tower counter clockwise 2 turns and place hook of scale in top hole of checking lever supplied with transmission (this lever should be about 5 1/2" over all length) and pull scale slowly to shift section, taking note of highest reading this is your shift pressure. Gears attached to the output shaft are loosely connected. There is also a blue disc and a tan disc both of these styles come in one size. 1.21%Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. Lencodrives is a CS-2 transmission. With its modular design, an infinite number of speeds can be added. 1.44% ratio uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. Glazed, burned and chipped discs must also be replaced immediately. How is this done? Multiply all three gearset ratios to determine the first gear ratio of 2.47:1. lntroduced in 1972 as a 2-speed the Standard Design LENCO is our largest and strongest transmission. Choice of ratio. In order to achieve an underdrive first gear launch ratio the LENCO transmission relies on planet gears which rotate around the sun gear. lenco cs3 5 speed. The sun gear only rotates when it is locked with the ring gear. In the Lenco, the shift lever actually moves the clutch pack together to engage the gear in each housing. Thus a 1:1 ratio is achieved. Porsche 911-06 side shift transmission for 914 4 or 6. 1.313%Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. Going to high on the pressure shocks the transmission and drive-train. New and Used Parts The rear case a 1.31 ratio gearset. Air or manual shift. 4-Speed $9,830. The three speed is approximately 135 lbs. 1.25% ratio uses 32 tooth planet gears, a 22 tooth sun gear and an 86 thooth ring gear. 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. 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 first 300 feet of track is excellent, for instance, full shift pressure and instant lock-up may be desired. 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. 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. - Uses 30/35 tooth planet gears, a 23 tooth sun gear and a 90 tooth ring gear. 1.44%Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. Lever or CO2 shift. Then, continue to screw air servo Out (counter-clockwise) one half turn.
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