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. 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. Add fluids as necessary and install fill plug. By multiplying these three ratios you come up with a 2.46 first gear ratio. Air or Lever Shift. All ST1200 Street units now come with low drag bearings and a billet case. 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. When the transmission is shifted a clutch pack compresses the rotating sun gear assembly to the direct drive central sun gear. 1.25%(Large shaft gearset) Uses 36 tooth planet gears, a 25 tooth sun gear and a 98 tooth ring gear. Then, continue to screw air servo Out (counter-clockwise) one half turn. Multiply the two rear case gearset ratios to determine the second gear ratio of 1.80:1. All transmissions are the sum of their parts. 1.35% Uses 26 tooth planet gears, a 28 tooth sun gear and a 80 tooth ring gear. A large ring gear surrounds the entire solar system of gears. Shown with our boat bellhousing. Too much torque and the output shaft can suffer deflection, and the whole system can start to fail in its operation as the gears move away from each other. When setting up your clutch packs they need to have the proper air gap or clutch pack clearance. Lenco drive clutch question | InsideTopAlcohol 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. 1.20%Uses 40 tooth planet gears, a 21 tooth sun gear and a 102 tooth ring gear. 1.44% - Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. With that said, the bare finish is a popular choice for the boat racing crowd, so for some beauty trumps added maintenance. 1.313% Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. Second gear ratio is 1.80 and third gear is a 1 .31 ratio. Each sun and planet gearset provides two speeds.

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