The hard-anodized finish is meant to thrive in that environment, requiring no more than a quick wipe down with a damp rag, whereas the bare aluminum transmission would need more work to get it sparkling again. Stay up to date with news and promotions by signing up for our monthlly newsletter. The total amount of gear reduction depends on the amount of housings and the overall application of the transmission. Since all LENCO transmissions utilize the same internal gearing design you can easily change from a manual shift set
We happen to run synthetic AFT. With its modular design, an infinite number of speeds can be added. Since each case contains one gearset and provides both underdrive and direct drive,multiple cases (gearsets) provide multiple underdrive ratios. 1.368%Uses 21 tooth planet gears, a 25 tooth sun gear and an 74 tooth ring gear. 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. Sight through plug hole, where you will see the outer edge of the rotary shift plate. 1.48% Uses 22 tooth planet gears, a 40 tooth sun gear and a 83 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. 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 LENCO ST1200 is the answer for Pro Street and street/strip applications. We can supply practica.. Lenco Racingthrowout bearing collars are machined from premium aircraft grade billet aluminum .. Building a Lenco ST1200 starts with constructing the soul of the transmission: assembling its planetary gear sets. Add fluids as necessary and install fill plug. 1.37% - Uses 26 tooth planet gears, a 31 tooth sun gear and a 83 tooth ring gear. Pressure set-up kit Our shift pressure set-up kit consists of a separate adjustment tower, lever, pull scale and chart of recommended pressures. Copyright 2020, Lenco Racing. Upshifting is very commonly done this way, but you can also do it while downshifting. Checking Shift Pressure(only on CS-1 style or center shift transmissions): To measure the shift pressure install checking lever into tower screw jam nut all the way up the tower so it's out of the way. Competition Eliminator, Super classes, Top Dragster and Pro Stock cars are typical classes where you will find the New Generation LENCO. 1.28% - Uses 32 tooth planet gears, a 25 tooth sun gear and a 89 tooth ring gear. 1.23%Uses 21/30 tooth planet gears, a 25 tooth sun gear and a 76 tooth ring gear. We recommend that you discuss your application with our technical representatives and follow their suggestions on which
All LENCO transmissions operate in basically the same way and if you have any questions about servicing your trans please call our tech line at (909) 673-9080. This is a 1971-72 901 transmission converted for use as a side shift 914 gearbox. This information leads to a selection of sun gears with associating ratios, ring gears, and properly sized planet gears that mate the sun gears to their ring gears. Chevy Pilot Bearing Assembly 1955-2000 Chevrolet (SB & BB), and Lenco transmissions. Unlike a traditional manual transmission with its singe shifter, planetary transmissions have multiple levers which are used to shift the transmission. Its used to force the gear set to make it's ratio by preventing the sun gear from rotating in one direction. 1.338%Uses 24 tooth planet gears, a 25 tooth sun gear and a 74 tooth ring gear. 1.22% Uses compound 21 and 30 tooth planet gears, a 24 tooth sun gear and a 75 tooth ring gear. Or maybe simply a T56 magnum is all you need. 1.338% Uses 24 tooth planet gears, a 25 tooth sun gear and a 74 tooth ring gear. As with all LENCO transmissions a separate reverse unit is employed. Apply a small amount of Red (271) Locktite on the set screw. Second gear ratio is 1.80 and third gear is a 1.31 ratio. Screw air servo into case until it bottoms out against the jam nut. 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. Stay up to date with news and promotions by signing up for our monthlly newsletter. The downside of this setup is that the shafts are only supported on their ends, so the shaft can bend with torque. Copyright 2020, Lenco Racing. This will allow for free play in the shift system. If you want to go straight to the action, skip to around 2:20. We acheive more than two speeds by combining multiple cases. street transmission, The CS1 Standard Design LENCO is recommended for the most severe applications and is capable of repeatable consistency with a minimum of maintenance. The Lencodrive will accept virtually any manufacturer's torque converter. Run air servo jam nut and o-ring down against the case and tighten with a 1 1/2" wrench. Material Gears. $3,200. 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. Multiple speed transmissions use multiplication of gears to create different speeds. Th.. Run the air servo jam nut and o-ring up the threads on the servo. Lencodrive 4 Speed. Those two speeds are (1) the lower underdrive ratio and (2) the direct'1:1 final lock-up drive ratio. Shift with either our patentedmulti lever system or with the optional, more compact CO2 setup. all hardware. CS1 Standard Design
The power is passed straight through from one planetary gear set into the next gear set and the process repeats again. Jeff says that he loves the transmission and "the only thing different [from driving a traditional gearbox] is that there is no engine braking". 5-Speed $10,660. Screw the servo into the transmission case until contact is made with the shift fork pin. You will need to add a LENCO reverse unit in order to back up. 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. The dual clutch manual transmission is simply fast. Tags: There are a variety of both manual and CO2 servo tower designs. By multiplying these three ratios you come up with a 2.46 first gear ratio. Light weight ring gears (units w/27 and 32 spline shafts only). 1.23% Uses 21/30 tooth planet gears, a 25 tooth sun gear and a 76 tooth ring gear. Our most common style clutch disc is the green disc and it comes in two sizes depending on which style transmission you are working on. 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 1.256%Uses 32 tooth planet gears, a 22 tooth sun gear and a 86 tooth ring gear. (2) it is easier to work on the bruno/lenco . If, however, the track is loose from 300 through 500 you can soften
Engineered for 1200 HP. Th.. Copyright 2020, Lenco Racing. Please call for ordering or technical information. As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds. 1.22%Uses 38 tooth planet gears, a 22 tooth sun gear and a 98 tooth ring gear. 3. 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. Unfortunately, we no longer sale small Sprags do to the ever increasing horse power produced with today's motors. Gear Ratio Reducer
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. This is first gear. When doing burnout's you need to roll up to the water box then shift all sections accept the front section. up to the CO2 configuration or vice versa. 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. The boat clutch provides gentle engagement and disengagement. Burnout's (on all LENCOS): 1.48% Uses 22 tooth planet gears, a 40 tooth sun gear and a 83 tooth ring gear. Final drive ratio is 1:1. The arm must be free to move in all directions. 1.566%Uses 18 tooth planet gears, a 45 tooth sun gear and an 81 tooth ring gear. Gears that mesh easier suffer from less resistance, which leads to higher efficiency and less parasitic loss. Lenco transmissions essentially combine the best of a manual and automatic transmission into one unit. 1.25%(Small shaft gearset) Uses 32 tooth planet gears, a 22 tooth sun gear and a 86 tooth ring gear. Multiply the two rear case gearset ratios to determine the second gear ratio of 1.80:1. the shift pressure to maintain desired wheel speed and traction. The LENCODRIVE is the automatic answer for people who prefer torque converter/automatic transmission applications. The only difference is that in an automatic, the transmission fluid moves internal valves to close the clutch pack. Air or Lever Shift. How is this done? Changing gears and setting it up is the same for the CS-2 and the Lencodrive. No alterations to the transmission, other than the external operating system itself, are required. The CS1 will control up to 3000 HP. The planet gears are driven by an encompassing ring gear. 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. The next lever is used for fourth gear and final lever for fifth. When the transmission is shifted a clutch pack compresses the rotating sun gear assembly to the direct drive central sun gear. Rotate air servo into case until you see the set screw in the air servo piston boss inside the case. The Sprag clutch is utilized in each shiftable section of the LENCO with the exception of the reverse. The 2 speed, including reverse, bellhousing and lining weighs approximately 108 lbs. 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. The main advantage of a lenco transmission is its simplicity. A large ring gear surrounds the entire solar system of gears. It's capacity is much stronger than the small sprag. CS-1 style or center shift transmissions: .. All Lenco coupler clamps are machined from 7075 aircraft grade aluminum. The ST1200 is the same engineering design as the all-out-race New Generation CS2 but with a couple of minor differences. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . Assemble next section on to case and bolt tight. Shift pressure is adjustable, whether it be for one case, all cases or anindividual case in a multiple case configuration. When you add the fact that this car is a manual, it really makes this drag racing video a rare one to enjoy. When setting up your clutch packs they need to have the proper air gap or clutch pack clearance. Run the air servo jam nut and o-ring up the threads on the servo. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. the final shift, being locked to a 1:1 ratio. 1.50%Uses 22 tooth planet gears, a 44 tooth sun gear and an 88 tooth ring gear. This gadget employed three shift levers to accomplish everything that a single lever could do. For example, a three speed requires two cases. The Lenco Racing ST1200 4 Speed Transmission has been specifically designed and engineered for severe duty street/strip applications. Going to low on the pressure you get lazy shifts and faster transmission clutch wear requiring frequent changes. Thus a 1:1 ratio is achieved. 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. 1.50% - Uses 17 tooth planet gears, a 34 tooth sun gear and a 68 tooth ring gear. 9310 steel would be used in Pro Stock, Pro Mod and other similar applications where substantially more HP, torque and tire plant is generated. Once determined, these gear configurations are assembled in their planetary carriers. Hurst's inspiration for the Lightning Rods was the Lenco transmission (above) used in drag racing in those years, notably in the NHRA Pro Stock category. Reverse is handled by a reverser section that is attached to the rear of the transmission. It uses a clutch and flywheel assembly only to engage the transmission into first and reverse . 1 position forward selects 1st gear, then 2nd gear is selected by . - Uses 22/38 tooth planet gears, a 24 tooth sun gear and an 84 tooth ring gear. Porsche 911-06 side shift transmission for 914 4 or 6. What this means in practice is you use the clutch pedal to engage first and reverse . In order to achieve an underdrive first gear launch ratio the LENCO transmission relies on planet gears which rotate around the sun gear. 1.23%Uses 21/30 tooth planet gears, a 25 tooth sun gear and a 76 tooth ring gear. 1.41%Uses 23 tooth planet gears, a 32 tooth sun gear and an 79 tooth ring gear. Lenco Transmissions Tech. Shift Patterns: All levers in forward position result in the transmission being in first gear. This is how we engage gears in a traditional manual transmission. 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. The Lenco Racing Lencodrive 3Speed Automatic Transmission represents our response to people wh.. Then, continue to screw air servo Out (counter-clockwise) one half turn. For additional information about Lenco products please email us here, or call us at (909) 673-9080. 4-Speed $9,830. The simplicity also makes them easy to repair if something goes wrong . Add bellhousing depth to above lengths for total length: Lenco aluminum, Titanium or Browell steel: 7.200". The sun gear is the center of the mechanism's universe. Planetary transmissions rely on a central sun gear to provide a 1:1 direct drive ratio once shifted from the launch ratio. Shafts are available in Marage or 300M material.16 or 32 spline. Multiply the two rear case gearset ratios to determine the second gear ratio of 1.80:1. 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. 1.25% Uses compound 25 and 29 tooth planet gears, a 25 tooth sun gear and a 76 tooth ring gear. ln general, all Lenco transmissions are a planetary design. Most popular with Sand Dragsters, Mud racers and Modified pullers. This is a very extreme duty sprag assembly. 1.22% Uses compound 21 and 30 tooth planet gears, a 24 tooth sun gear and a 75 tooth ring gear. 1.31% ratio uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. Screw air servo into case until it bottoms out against the jam nut. Multiply all three gearset ratios to determine the first gear ratio of 2.47:1. 1.19%Uses 21/33 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. 1.44% - Uses 20 tooth planet gears, a 32 tooth sun gear and a 73 tooth ring gear. The ST1200 is available with all popularbellhousing patterns - Ford, GM, MoPar and our own five-bolt design. The CS2 ,CS3, and CS4 LENCO racing transmission is a smaller, lighter and more compact version of our CS1 Standard Design. Clutchless shifting is the practice of changing or shifting your gear without touching the left bar lever. for all your racing needs, LENCO transmissions are a planetary design. Each LENCO transmission is thus a two speed and is housed in one dedicated two speed. Other sections are added in a similar way: parts are pressed into casings, gears are added, and sections are bolted together in a repetitious manner. Charlotte , NC. The 2 speed, including reverse, bellhousing and lining weighs approximately 108 lbs. 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. All three units shifted equal final drive ratio of 1:1. Each case in succession, with its particular underdrive ratio, determines the immediate drive ratio. Shims before and after the shifter plate assembly -. If he shifts slower, the transmission shifts softer; if he shifts faster, the transmission shifts harder. Shown with our boat bellhousing. The truck runs a big-block Chevy that makes 1,100 horsepower on pump gas and lots of nitrous oxide. The arm is held into the servo piston by a set screw. with its dedicated underdrive ratio, determines the immediate drive ratio. This can cause tire shake. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. 1.44% ratio uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. 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 24 tooth planet gears, a 34 tooth sun gear and a 83 tooth ring gear. 1.44% - Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. at a lesser price than our full race units. LENCO racing transmission is a smaller, lighter and more compact version of our CS1 Standard Design. 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
In order to achieve an underdrive first gear launch ratio the LENCO transmission relys on planet gears which rotate around the sun gear. 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. The possible combinations are endless! 1.21%Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. lntroduced in 1972 as a 2-speed the Standard Design LENCO is our largest and strongest transmission.
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