how to shift a lenco transmission
Copyright 2020, Lenco Racing. Then, continue to screw air servo Out (counter-clockwise) one half turn. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. 1.16%Uses 21/36 tooth planet gears, a 22 tooth sun gear and a 79 tooth ring gear. Multiply all three gearset ratios to determine the first gear ratio of 2.46:1. 1.31% Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. The power is passed straight through from one planetary gear set into the next gear set and the process repeats again. 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. 1.31% ratio uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. 1.73% Uses 14 tooth planet gears, a 76 tooth sun gear and a 104 tooth ring gear. Enough to make the run and turnoff before it releases. 1.31%Uses 27 tooth planet gears, a 25 tooth sun gear and a 80 tooth ring gear. All Lencodrives come with the following (less converter). Unfortunately, we no longer sale small Sprags do to the ever increasing horse power produced with today's motors. The Lenco Racing Lencodrive 3Speed Automatic Transmission represents our response to people who have asked for a safe and affordable torque converter driven transmission. In the example of a four speed, the case nearest the engine would contain a 1.37 ratioplanet gear set. The second lever, and second tallest, is used for third gear. CS-1 style or center shift transmissions: Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. 1.280%Uses 27 tooth planet gears, a 21 tooth sun gear and a 75 tooth ring gear. specific design will suit you best. The next lever is used for fourth gear and final lever for fifth. On the track, however, the low 48 percent first gear should be enough to launch any powerful car hard, and the transmission's history of performance won't let anyone down. Or maybe simply a T56 magnum is all you need. First, the top loader has three levers on the drivers side of the case, 1 is for 1st and 2nd gear, the next is for reverse, and the third is for 3rd and 4th gear. ln general, all Lenco transmissions are a planetary design. You always need to come out of the water box in high gear to prolong the life of the transmission. 1. Screw air servo counter-clockwise about five or six turns before you reassemble the transmission. 1.48% Uses 22 tooth planet gears, a 40 tooth sun gear and a 83 tooth ring gear. A LENCO launch ratio is determined by the sun and planet gear ratio. When locked, the gear's ratio is translated to the output shaft as the gear and the output shaft are now fixed. Run the air servo jam nut and o-ring up the threads on the servo. To address this, Lenco added more gear ratios, particularly ratios which were half-steps to fill in the gaps so that a customer could fine tune their system without the pesky large leap that used to happen. You can expand to 3 or 4 speeds by addition of additional cases. 1.38% Uses 23 tooth planet gears, a 28 tooth sun gear and an 74 tooth ring gear. Copyright 2020, Lenco Racing. You must multiply each case's underdrive ratio in order to determine the first gear ratio. Shown with our boat bellhousing. 1.25% Uses compound 25 and 29 tooth planet gears, a 25 tooth sun gear and a 76 tooth ring gear. Lenco Transmission Overview 1.48%- Uses 22 tooth planet gears, a 40 tooth sun gear and an 83 tooth ring gear. The rear case a 1.31 ratio gearset. The ST1200 comes with aluminum cases instead of the magnesium style race units. Casings are anodized and set in a mechanical press. The Lenco Racing Lencodrive 2 Speed Automatic Transmission represents our response to people who hav.. Planetary transmissions rely on a central sun gear to provide a 1:1 direct drive ratio once shifted from the launch ratio. 1.25% ratio uses 32 tooth planet gears, a 22 tooth sun gear and an 86 thooth ring gear. Add bellhousing depth to above lengths for total length: Lenco aluminum, Titanium or Browell steel: 7.200". To select any gear (ie 1st gear) the other two levers (3/4th & reverse) must be in the neutral (center) position. 2 Speed + reverser with Pro output: 18.500". $3,200. and anodized for corrosion and galling protection. A large sprag clutch is attached on to the sun gear of the planetary carrier finishing the transmission section. Unlike a traditional manual transmission with its singe shifter, planetary transmissions have multiple levers which are used to shift the transmission. The possible combinations are endless! It also allowed Lenco to shave as much weight as possible from the finished part. 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. Lenco, the all time champion and undisputed leader in the drag racing transmissions. A BorgWarner T56 six-speed transmission was used in the Viper; automatics have never been available. 1.28%Uses 32 tooth planet gears, a 25 tooth sun gear and a 89 tooth ring gear. 1.56% Uses 22 tooth planet gears, a 55 tooth sun gear and a 98 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. 3 Speed + reverser with Std output: 24.000". the final shift, being locked to a 1:1 ratio. Assemble next section on to case and bolt tight. Lenco Parts and Price List isavailable here. All three units shifted equal final drive ratio of 1:1. They only serve to transfer the power of the ring gear to the planetary and to rotate around the sun gear if the sun gear is held stationary by the sprag clutch. Lenco, the all time champion and undisputed leader in the drag racing transmissions. Since the 30 wt oil is thicker it takes a . Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. Glazed, burned and chipped discs must also be replaced immediately. 1.50%Uses 22 tooth planet gears, a 44 tooth sun gear and an 88 tooth ring gear. 4-Speed $9,830. 1.19%Uses 21/33 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. Lenco Clutch Disk Alignment Tools areavailable in black anodized billetaluminum. It uses a clutch and flywheel assembly only to engage the transmission into first and reverse gears. 1.68%Uses 15 tooth planet gears, a 62 tooth sun gear and 91 tooth ring gear. Choice of standard or new generation reverses. 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. His typical drives usually include lighting up the rear tires while going sideways as he yanks the levers back, shifting the ensemble of levers to move the transmission through 1st, 2nd, and 3rd in quick succession. 1.48% Uses 22 tooth planet gears, a 40 tooth sun gear and a 83 tooth ring gear. It's capacity is much stronger than the small sprag. Each case in succession. Since each case contains one gearset and provides both underdrive and direct drive, multiple cases (gearsets) provide multiple underdrive ratios. The middle case would also contain a 1.37 planet gear set. As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds. There are a variety of both manual and CO2 servo tower designs. 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. Air or manual shift. 1.44%Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring 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. In the example of a four speed, the case nearest the engine would contain a 1.37 ratioplanet gear set. Each sun and planet gearset provides two speeds. The tallest to the right is used to shift the transmission from first to second gear. Lenco Drag race car. Dale's Transmission on Instagram: "Weird Transmission Wednesday The 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 You must multiply each cases underdrive ratio in order to determine the first gear ratio. 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. There must be a minimum of .060" to a maximum of .090" of clearance between face of pilot bearing to beginning of clutch spline. What this means in practice is you use the clutch pedal to engage first and reverse . Now rotate counter clockwise 1/2 to 1 turn and tighten lock nut. Lenco Parts and Price List isavailable here. 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. Lenco for street use | Team Chevelle 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. and control slippage. Our sister publication is attempting to build an 8-second quarter-mile, '68 Chevy pickup which will also embark on a 450-plus mile trek from Los Angeles to Phoenix without any other changes. 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. Thus a 1:1 ratio is achieved. LENCO racing transmission is a smaller, lighter and more compact version of our CS1 Standard Design. I've mounted it where It's most comfortable for me. 1.19% (1.191) - Uses 28/38 tooth planet gears, a 23 tooth sun gear and a 91 tooth ring gear. gearset/ratio and when connected to additional cases multiple ratios are realized. 1.256% Uses 32 tooth planet gears, a 22 tooth sun gear and a 86 tooth ring gear. When you add the fact that this car is a manual, it really makes this drag racing video a rare one to enjoy. You must multiply each cases underdrive ratio in order to determine the first gear ratio. We got to ride along in an ST1200 equipped car, and what a monster of a car it was. 1.21%Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. V-gate shifter for 4 and 5-speed Lenco | Page 2 | Yellow Bullet Forums Shift with either our patented. 1.56% - Uses 16 tooth planet gears, a 41 tooth sun gear and a 73 tooth ring gear. 4 speed. Lenco Racing, the all time champion and undisputed leader in the drag racing. 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. 1.31% ratio uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. The three speed is approximately 135 lbs. 1.34% - Uses 24 tooth planet gears, a 25 tooth sun gear and a 74 tooth ring gear. Air servos are machined from billet alum. If it is necessary to remove the servos you should reinstall with the lock nut spun completely to the top of its travel.