how to shift a lenco transmission

In order to achieve an underdrive first gear launch ratio the LENCO transmission relys on planet gears which rotate around the sun gear. Th.. Lencodrives is a CS-2 transmission. 1.313% Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. 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. 1.25% (1.252) - Uses 24/28 tooth planet gears, a 23 tooth sun gear and a 78 tooth ring gear. I've made provision, so that shift lever can be moved to the back of the trans quite easily. 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. LENCO transmissions are shipped with the shift levers removed in order to prevent damage during shipping. 1.38% ratio uses 23 tooth planet gears, a 28 tooth sun gear and a 74 ytooth ring gear. 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. 1. 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. When you add the fact that this car is a manual, it really makes this drag racing video a rare one to enjoy. Shims before and after the shifter plate assembly -. Since each case contains one gearset and provides both underdrive and direct drive, multiple cases provide multiple underdrive ratios. We can supply practica.. Lenco Racingthrowout bearing collars are machined from premium aircraft grade billet aluminum .. Glazed, burned and chipped discs must also be replaced immediately. 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. 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. This is our double large sprag assembly and is used primarily in the boat applications, but has found its way into some car applications. Planetary transmissions rely on a central sun gear to provide a 1:1 direct drive ratio once shifted from 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. Lenco revamped the ST1200, by replacing sand molds with CNC 5 and 6-axis milling machines. 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. Run air servo jam nut and o-ring down against the case and tighten with a 1 1/2" wrench. Multiple speed transmissions use multiplication of gears to create different speeds. You could not make small adjustments, so owners had to be selective in their transmission and rearend gear choices. 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. It also allowed Lenco to shave as much weight as possible from the finished part. Lenco, the all time champion and undisputed leader in the drag racing transmissions. The planetary carrier that is holding the sun gear and planetary gears and clutch pack is placed inside the ring gear. When this same section is shifted the Sprag then allows the sun gear to rotate in the same direction as the. Lenco Drag race car. There are a variety of both manual and CO2 servo tower designs. 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. When doing burnout's you need to roll up to the water box then shift all sections accept the front section. Copyright 2020, Lenco Racing. All three units shifted equal final drive ratio of 1:1. Throwout bearing collar (4 & 5-speed only). Since each case contains one gearset and provides both underdrive and direct drive, multiple cases (gearsets) provide multiple underdrive ratios. Exclusively V.A.R. Its used to force the gear set to make it's ratio by preventing the sun gear from rotating in one direction. 1.19%Uses 21/33 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. Those two speeds are (1) the lower underdrive ratio and (2) the direct 1:1 final lock-up drive ratio. To select any gear (ie 1st gear) the other two levers (3/4th & reverse) must be in the neutral (center) position. 1.37% - Uses 26 tooth planet gears, a 31 tooth sun gear and a 83 tooth ring gear. Copyright 2020, Lenco Racing. The sections are joined by a sprag clutch that restricts rotation of the sun gear to one direction. 1.50%Uses 22 tooth planet gears, a 44 tooth sun gear and an 88 tooth ring gear. Also, a hp/tq rating on a transmission does not mean it will actually hold that much. Gears that mesh easier suffer from less resistance, which leads to higher efficiency and less parasitic loss. In order to achieve an underdrive first gear ratio the LENCO transmission relys on planet gears which rotate around the previously mentioned sun gear. First gear is the furthest lever from the driver with higher gears being the nearest levers. This L.. Lenco Clutch Disk Alignment Tools areavailable in black anodized billetaluminum. Add fluids as necessary and install fill plug. We recommend that you discuss your application with our technical representatives and follow their suggestions on which 1.48% Uses 22 tooth planet gears, a 40 tooth sun gear and a 83 tooth ring gear. 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. Those two speeds are (1) the lower underdrive ratio and (2) the direct 1:1 final lock-up drive ratio. of the adjustable shift tower plunger. Each LENCO transmission is thus a two-speed and is housed in its single dedicated case. The shift lever is almost the same height as the standard 5th gear lever. This change cut down weight substantially which added to the overall rotational mass reduction. Lenco Parts and Price List isavailable here. - Uses 28/38 tooth planet gears, a 23 tooth sun gear and a 91 tooth ring gear. Thus a 1:1 ratio is achieved. When you select a gear, the gear shaft moves a synchronizing gear that looks like a toothed collar. Magnesium cases are used for both the CS2, CS3 and CS4. 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. Reverse lever. LENCO racing transmission is a smaller, lighter and more compact version of our CS1 Standard Design. 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. Each sun and planet gearset provides two speeds. 1.500%Uses 19 tooth planet gears, a 38 tooth sun gear and a 76 tooth ring 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 leader in street planetary transmissions. 1.280%Uses 27 tooth planet gears, a 21 tooth sun gear and a 75 tooth ring gear. 1.44% Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. 1.22% Uses 21/30 tooth planet gears, a 24 tooth sun gear and a 75 tooth ring gear. at a lesser price than our full race units. The arm must be free to move in all directions. If you have a car that you drive to the store on Monday and to the drag strip on Sunday, the only hard question that you have to ask yourself is: Do you prefer anodized or clear? Large Strips and Clips Sprag Assembly - Thisis a specialized sprag and is used in applications where tire shake is a constant problem. Then start the tires spinning, now shift the front section so that you are now in high gear. Then, continue to screw air servo Out (counter-clockwise) one half turn. 1.34% - Uses 24 tooth planet gears, a 25 tooth sun gear and a 74 tooth ring gear. This is a 1971-72 901 transmission converted for use as a side shift 914 gearbox. shift pressure control. 1.21% Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. 1.566% Uses 18 tooth planet gears, a 45 tooth sun gear and an 81 tooth ring gear. 1.297% Uses 26 tooth planet gears, a 22 tooth sun gear and a 74 tooth ring gear. 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. Lenco Parts and Price List isavailable here. You can add additional cases and gearsets that will result in 3 or 4 speeds. You must multiply each cases underdrive ratio in order to determine the first gear ratio. The Lenco Racing ST1200 4 Speed Transmission has been specifically designed and engineered for severe duty street/strip applications. 1.68% Uses 15 tooth planet gears, a 62 tooth sun gear and a 91 tooth ring gear. 1.25%(Small shaft gearset) Uses 32 tooth planet gears, a 22 tooth sun gear and a 86 tooth ring gear. You must multiply each case's underdrive ratio in order to determine the first gear ratio. multi lever system or with the optional, more compact CO2 setup. Pistol Grip Manual Shifter. A BorgWarner T56 six-speed transmission was used in the Viper; automatics have never been available. 1.24%Uses 26/31 tooth planet gears, a 23 tooth sun gear and an 80 tooth ring gear. The CS1 planetary gear size is 1". 9310 steel would be used in Pro Stock, Pro Mod and other similar applications where substantially more HP, torque and tire plant is generated. By multiplying thesethree ratios you come up with a 2.46 first gear ratio. 1.31% Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. When locked, the gear's ratio is translated to the output shaft as the gear and the output shaft are now fixed. Those two speeds are (1) the lower underdrive ratio and (2) the direct'1:1 final lock-up drive ratio. Equipped with a Lenco ST1200 5-speed transmission, Jeff regularly drives his car on the streets around his home in Oceanside, CA. 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. 1.38%Uses 23 tooth planet gears, a 28 tooth sun gear and a 74 tooth ring gear. All Rights Reserved. When the transmission is shifted a clutch pack compresses the rotating sun gear assembly to the direct drive central sun gear. View the whole process and start at the beginning. By multiplying these three ratios you come up with a 2.46 first gear ratio. 1.356% Uses 23 tooth planet gears, a 26 tooth sun gear and a 73 tooth ring gear. To install lever remove bolt, insert lever in shift tower so that it faces forward and install bolt. Each case in succession, with its particular underdrive ratio, determines the immediate drive ratio. Lencodrive 3 Speed. and control slippage. restaurant manzil paris menu, blonde hair blue eyes facts,
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