Lenco, the all time champion and undisputed leader in the drag racing transmissions. Run the air servo jam nut and o-ring up the threads on the servo. 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. No alterations to the transmission, other than the external operating system itself, are required. This pressure adjustability gives you considerable control when ST1200 Street Strip This will allow for free play in the shift system. The tallest to the right is used to shift the transmission from first to second gear. The 2 speed, including reverse, bellhousing and lining weighs approximately 108 lbs. Lencodrive 4 Speed. 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. 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. All Rights Reserved. 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 . Lenco transmissions essentially combine the best of a manual and automatic transmission into one unit. If you want to go straight to the action, skip to around 2:20. We acheive more than two speeds by combining multiple cases. The total amount of gear reduction depends on the amount of housings and the overall application of the transmission. The rear axle is a Dana 44 with independent half-shafts. The rear case a 1.31 ratio gearset. 1.25% (1.252) - Uses 24/28 tooth planet gears, a 23 tooth sun gear and a 78 tooth ring gear. lntroduced in 1972 as a 2-speed the Standard Design LENCO is our largest and strongest transmission. Remember that each separate case contains it own The middle case would also contain a 1.37 planet gear set. Clutchless Transmission - Liberty's Gears 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. It's capacity is much stronger than the small sprag. transmissions, 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. 1.44% - Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. 1.46% - Uses 22 tooth planet gears, a 37 tooth sun gear and a 80 tooth ring gear. Rotate air servo into case until you see the set screw in the air servo piston boss inside the case. It only has two moving parts, the belt itself and a shaft that connects it to other components in the vehicle or machine. Exclusively V.A.R. It's capacity is much stronger than the small sprag. Each gear is engaged by pulling down on the shift lever, to activate the clutch mechanism for each gear set. 4-Speed $9,830. A five speed requires four cases, and a six speed requires five cases. You can add additional cases and gearsets that will result in 3 or 4 speeds. Second gear ratio is 1.80 and third gear is a 1.31 ratio. 1.22%Uses 38 tooth planet gears, a 22 tooth sun gear and a 98 tooth ring gear. Engineered for 1200 HP. To add more speeds to a planetary transmission you add more sections. The Lencodrive comes as a 2 speed with reverse. Every track differs from day to day or hour to hour. Each case in succession, with its particular underdrive ratio, determines the immediate drive ratio. Charlotte , NC. In order to achieve an underdrive first gear launch ratio the LENCO transmission relies on planet gears which rotate around the sun gear. 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. The arm must be free to move in all directions. Transmission Bruno or lencodrive | InsideTopAlcohol Screw the servo into the transmission case until contact is made with the shift fork pin. 1.22%Uses 21/30 tooth planet gears, a 24 tooth sun gear and a 75 tooth ring gear. Lencodrive Options: (option pricing only). 1.38% Uses 23 tooth planet gears, a 28 tooth sun gear and an 74 tooth ring gear. 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. This intermediate shaft connects this planetary gear set to subsequent planetary gear sets which make up the modular nature of this transmission. Air shifted LENCOS come pre adjusted from the factory. EASY SHIFTING with David Sumek | David answers a few FAQ on - Facebook The arm is held into the servo piston by a set screw. When this same section is shifted the Sprag then allows the sun gear to rotate in the same direction as the crankshaft. When locked, the gear's ratio is translated to the output shaft as the gear and the output shaft are now fixed. With its modular design, an infinite number of speeds can be added. What kind of clutch you run is a big factor. We are able to offer the ST1200 Street/Strip at lower cost than our pure race CS1, CS2, CS3 and CS4 designs since we use 8620 steel instead of 9310 material for the ST1200 gears. Shifters and lockouts can be either style. 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. Warning: Do Not over tighten set screw. Simply put, once the transmission is in gear, the power runs through a set of planetary gears. 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. 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. 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. . Assemble next section on to case and bolt tight. Stay up to date with news and promotions by signing up for our monthlly newsletter. But extreme cost-among other things--has always been a huge inhibitor for all but the stoutest of street-driven machinery. The CS-2 is much easier to work on than the CS-1. As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds. 1.56% Uses 22 tooth planet gears, a 55 tooth sun gear and a 98 tooth ring gear. 1.48%- Uses 22 tooth planet gears, a 40 tooth sun gear and an 83 tooth ring gear. The counter shaft has fixed associating gears that are permanently meshed with the loosely connected gears on the output shaft. 1.297%Uses 26 tooth planet gears, a 22 tooth sun gear and a 74 tooth ring gear. Shift with either our patented. 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) Do Not Over Tighten. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. Each LENCO transmission is thus a two speed and is housed in one dedicated two speed.
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