All shifting is done with the engine's clutch engaged. Porsche 911-06 side shift transmission for 914 4 or 6. Posted 6 days ago. 300M Input/Cluster Shafts. Available in either bare aluminum (clear) or hard anodized black finish, you can choose the transmission finish that best suits your style; however, Lenco highly recommends the standard hard anodized black finish as transmissions usually live a hard life underneath a car where no one can see it, and where it is subject to lots of splashing and hits from rocks and other road debris. Then start the tires spinning, now shift the front section so that you are now in high gear. 1.22% (1.219) - Uses 30/35 tooth planet gears, a 23 tooth sun gear and a 90 tooth ring gear. 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. 1.19%Uses 21/33 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. If it is necessary to remove the servos you should reinstall with the lock nut spun completely to the top of its travel. drag racing, With the extensive number of ratios we offer it is possible to choose from over 7,000 first gear combinations in the case of a four-speed for example. Leaving the pressure plate spring (wave spring) out, place the pressure plate on top of the clutch pack. In the example of a four speed, the case nearest the engine would Thus a 1:1 ratio is achieved. You may choose any conventional input shaft spline. The 4-speed above shows how to determine drive ratios. The rear case a 1.31 ratio gearset. Jeff Turner's street driven 600hp on motor/800hp on a 200-shot of nitrous "race for money" license platted 1966 Pontiac GTO took us for a spin. There is also a blue disc and a tan disc both of these styles come in one size. The rear case a 1.31 ratio gearset. Tags: Add bellhousing depth to above lengths for total length: Lenco aluminum, Titanium or Browell steel: 7.200". It has special attachments to help it react quicker between the locked and the overrun position thus extending its service life. This will allow for free play in the shift system. 1.297%Uses 26 tooth planet gears, a 22 tooth sun gear and a 74 tooth ring gear. Technical Support - Lenco Racing Transmissions Attach air lines and your race ready. I've made provision, so that shift lever can be moved to the back of the trans quite easily. 1.313%Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. Each sun and planet gearset provides two speeds. Lenco Racing Releases New Billet Street Transmission - MotorTrend 3 Speed + reverser with Std output: 24.000". When the installed lever is loose that section is in low and when the lever is tight the sections in high. The Lencodrives come with three different shafts, a Ford, a GM, and a 1 1/4. custom vertical gate shifter, push button downshifting. INSTALLATION This synchronizing gear is pushed onto the teeth of one of the two drive gears that it sits in-between, matching its speed and locking it into place. The CS-2 is much easier to work on than the CS-1. It's capacity is much stronger than the small sprag. Easy to use and necessary for fine tuning 3. A large sprag clutch is attached on to the sun gear of the planetary carrier finishing the transmission section. Rotate air servo into case until you see the set screw in the air servo piston boss inside the case. Most popular with Sand Dragsters, Mud racers and Modified pullers. Remove fill plug on top the transmission case you are going to adjust. 1.44%Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. Lenco Clutch Disk Alignment Tools areavailable in black anodized billetaluminum. with its dedicated underdrive ratio, determines the immediate drive ratio. It's a transmission that will set any street/strip car apart from the competition, with performance to match its new all-aluminum billet CNC looks. 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. Reverse lever. Then, continue to screw air servo Out (counter-clockwise) one half turn. Engineered to handle 3500+ HP the Standard Design LENCO is available with up to 5 speeds and comes in a cast magnesium case. To add more speeds to a planetary transmission you add more sections. Jeff says that he loves the transmission and "the only thing different [from driving a traditional gearbox] is that there is no engine braking". The ST1200 is the same engineering design as the all-out-race New Generation CS2 but with a couple of minor differences. Different Sizes -LENCO utilizes several different styles and sizes of sprags depending on which application the transmission is used for. This in-car shot video shows a Mopar powered engine combined with the clutch-less Lenco Transmission that produces over 850 real Mopar horsepower!!! With a docile nature and racing pedigree, the new ST1200 improves upon the old, making a great transmission even better with improved technology, refined parts, and lower rotational mass for faster acceleration. Screw air servo counter-clockwise about five or six turns before you reassemble the transmission. LENCO transmissions are shipped with the shift levers removed in order to prevent damage during shipping. Multiply the two rear case gearset ratios to determine the second gear ratio of 1.80:1. The sun gear only rotates when it is locked with the ring gear. Copyright 2020, Lenco Racing. In the example of a four-speed, the case nearest the engine would contain a 1.37 ratio planet gear set. Each sun and planet gearset provides two speeds. This is what comes standard in most new LENCO transmissions. CS1 Standard Design 1.31% ratio uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. 1.38%Uses 23 tooth planet gears, a 28 tooth sun gear and a 74 tooth ring gear. As with the CS1 Standard Design, the New Generation CS2, CS3 and CS4 can be shifted by lever or our CO2 system. 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. 1.50% Uses 22 tooth planet gears, a 44 tooth sun gear and an 88 tooth ring gear. A perfect replacement for expensive breakage prone Powerglides, Turbos, C4, C6 style and Torqueflite transmissions the Lencodrive is 100% Lenco. It uses a clutch and flywheel assembly only to engage the transmission into first and reverse . 1.338% Uses 24 tooth planet gears, a 25 tooth sun gear and a 74 tooth ring gear. 1.21%Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. You can expand to 3 or 4 speeds by addition of additional cases. It is bolted to the end of the transmission with a splined output shaft which will await the driveshaft yoke. For example, a three speed requires two cases. 1.22%Uses 21/30 tooth planet gears, a 24 tooth sun gear and a 75 tooth ring gear. Yes, there are 18 different car gearbox types - MSN You can add additional cases and gearsets that will result in 3 or 4 speeds. 1.44% Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. Stay up to date with news and promotions by signing up for our monthlly newsletter. With a simple shift pressure adjustment you can easily compensate The simplicity also makes them easy to repair if something goes wrong . Or maybe simply a T56 magnum is all you need. 1.256%Uses 32 tooth planet gears, a 22 tooth sun gear and a 86 tooth ring gear. Burnout's(on all LENCOS): Add fluids as necessary and install fill plug. First gear is the furthest lever from the driver with higher gears being the nearest levers. Lenco Racing Transmissions celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. Again, in an effort to increase fuel economy, Vipers ship with tall 3.07:1 final drive ratios. A first-to-fourth skip-shift solenoid is used on the transmission to help increase fuel economy. Since each case contains one gearset and provides both underdrive and direct drive,multiple cases (gearsets) provide multiple underdrive ratios. The final section is the reverser. It only has two moving parts, the belt itself and a shaft that connects it to other components in the vehicle or machine. 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. To select any gear (ie 1st gear) the other two levers (3/4th & reverse) must be in the neutral (center) position. We can supply practica.. Lenco Racingthrowout bearing collars are machined from premium aircraft grade billet aluminum .. Apply a small amount of Red (271) Locktite on the set screw. Enough to make the run and turnoff before it releases. ST1200 Street Strip We offer Turbo 400, C6, Mega and standard Powerglide size input shafts per your requirements. 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. The ST1200 allows Jeff to control how hard his transmission shifts by changing how fast he pulls on the levers. Lenco transmissions essentially combine the best of a manual and automatic transmission into one unit. By multiplying these three ratios you come up with a 2.46 first gear ratio. To demonstrate the inner workings of the Lenco ST-1200 transmission, we followed along as one was being assembled for use in Truckin' Magazine's World's Fastest Street Legal Pickup. 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. Lever or CO2 shift. When this same section is shifted the Sprag then allows the sun gear to rotate in the same direction as the crankshaft. 1.31% ratio uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. Casings are anodized and set in a mechanical press. Street and Drag Racing Transmissions - Engine Builder Magazine Going to low on the pressure you get lazy shifts and faster transmission clutch wear requiring frequent changes. The Lenco Racing Lencodrive is the automatic answer for people who prefer torque converter/automatic transmission applications. This is an in-car shot video of Mike drag. This L.. Purchase the complete LENCO bell housing assembly or individual bellhousing components as needed. 1.500%Uses 19 tooth planet gears, a 38 tooth sun gear and a 76 tooth ring gear. Attach air lines and your race ready. Lencodrive 4 Speed. Chevy Pilot Bearing Assembly 1955-2000 Chevrolet (SB & BB), and Lenco transmissions. Planetary transmissions rely on a central sun gear to provide a 1:1 direct drive ratio once shifted from the launch ratio. Lenco burnout procedures | InsideTopAlcohol Reverse Lockout. 1.46% - Uses 22 tooth planet gears, a 37 tooth sun gear and a 80 tooth ring gear. Since internal combustion engines have a short torque band, we utilize transmissions to change the speed that the wheels spin by either using larger or shorter gear ratios. After inserting arm into the air servo piston boss, run set screw in until you can no longer remove the arm from the piston boss. The Lencodrive's trans-brake is controlled by an electric solenoid which activates hydraulic compression of a dedicated clutch pack. 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. Its used to force the gear set to make it's ratio by preventing the sun gear from rotating in one direction. 1.297% Uses 26 tooth planet gears, a 22 tooth sun gear and a 74 tooth ring gear. All levers in forward position result in the transmission being in first gear. 1.20%Uses 40 tooth planet gears, a 21 tooth sun gear and a 102 tooth ring gear. Stay up to date with news and promotions by signing up for our monthlly newsletter. Before you install the transmission you must measure the clearance between the pilot bearing end of the input shaft and the rear face of the pilot bearing. See(input diagram). Double Large Sprag Assembly -This is our double large sprag assembly and is used primarily in the boat applications, but has found its way into some car applications. Each LENCO transmission is thus a two speed and is housed in one dedicated two speed case. The original solid steel planetary carrier was also replaced with a two-piece planetary carrier that is part steel and part aluminum. If, however, the track is loose from 300 through 500 you can soften It is not necessary for the driver to disengage the clutch when shifting from ratio to ratio. With a selection of 16 first-gear ratios for the two-speed and hundreds more for three-speeds the LENCODRIVE presents you with the opportunity to dial-in your exact combination. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . 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. Once installed, make sure the air servo is loose and can turn freely. A five speed requires four cases, and a six speed requires five cases. 1.25% ratio uses 32 tooth planet gears, a 22 tooth sun gear and an 86 thooth ring gear. (only on CS-1 style or center shift transmissions): Air shifted LENCOS come pre adjusted from the factory. Section upon section are bolted together until the transmission takes shape, growing taller than the technician building it. The boat clutch provides gentle engagement and disengagement. But extreme cost-among other things--has always been a huge inhibitor for all but the stoutest of street-driven machinery. Stay up to date with news and promotions by signing up for our monthlly newsletter. It also allowed Lenco to shave as much weight as possible from the finished part. This is first gear. Rotate air servo into case until you see the set screw in the air servo piston boss inside the case. With its modular design, an infinite number of speeds can be added. specific design will suit you best. 1.16%Uses 21/36 tooth planet gears, a 22 tooth sun gear and a 79 tooth ring gear. No alterations to the transmission, other than the external operating system itself, are required. Screw the servo into the transmission case until contact is made with the shift fork pin. His dial-in time is 10.60 and his ET for this race was a 10.61. Material Gears. The Sprag clutch is utilized in each shiftable section of the LENCO with the exception of the reverse. As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds. 1.256% Uses 32 tooth planet gears, a 22 tooth sun gear and a 86 tooth ring gear. 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. Glazed, burned and chipped discs must also be replaced immediately. In all instances the transmission is then shifted to a 1:1 direct drive ratio by depression CS-1 style or center shift transmissions: 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. . Lenco Parts and Price List isavailable here. Shift pressure is adjustable, whether it be for one case, all cases or anindividual case in a multiple case configuration. 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. - Uses 30/35 tooth planet gears, a 23 tooth sun gear and a 90 tooth ring gear. 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. Copyright 2020, Lenco Racing. If it is necessary to remove the servos you should reinstall with the lock nut spun completely to the top of its travel. Apply a small amount of Red (271) Locktite on the set screw. Air or manual shift. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. Ourblue,greenandtandisc are supplied new at approximately .058"- .061" thickness. 1.378%Uses 23 tooth planet gears, a 28 tooth sun gear and a 74 tooth ring gear. up to the CO2 configuration or vice versa. 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. Please call for ordering or technical information. Please click here for CS3 Timing Chart (.pdf). Low drag (angluar contact and needle bearings). Th.. Call our technical department at (909) 673-9080 or email us here with any questions you may have concerning function or applications. The sections are joined by a sprag clutch that restricts rotation of the sun gear to one direction. The result is LENCO quality and durability at a reasonable "Street Machine" price. First you need to determine which style clutch packs you are working onsee chart. Choice of standard or new generation reverses. Assemble next section on to case and bolt tight. 1.16%Uses 21/36 tooth planet gears, a 22 tooth sun gear and a 79 tooth ring gear. The CS1 will control up to 3000 HP. The planet gears are driven by an encompassing ring gear. Second gear ratio is 1.80 and third gear is a 1.31 ratio. It has an electric solenoid that receives air from an adjustable regulator. When doing burnout's you need to roll up to the water box then shift all sections accept the front section. WATCH THIS: Shifting a Lenco | Hemmings Th.. Chevy Pilot Bearing Assembly 1955-2000 Chevrolet (SB & BB), and Lenco transmissions. Each LENCO transmission is thus a two speed and is housed in one dedicated two speed. The LENCO gear reduction unit - with a range of 31% to 56%-helps get you off the starting line. Warning: Do Not over tighten set screw. 1.41% Uses 23 tooth planet gears, a 32 tooth sun gear and a 79 tooth ring gear. Second gear ratio is 1.80 and third gear is a 1.31 ratio. Final drive ratio is 1:1. Burnout's (on all LENCOS): To install lever remove bolt, insert lever in shift tower so that it faces forward and install bolt. Warning: Do Not over tighten set screw. Lenco Shift Pressure | InsideTopAlcohol 1.25% (1.252) - Uses 24/28 tooth planet gears, a 23 tooth sun gear and a 78 tooth ring gear. 1.56% Uses 22 tooth planet gears, a 55 tooth sun gear and a 98 tooth ring gear. Thus a 1:1 ratio is achieved. 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. In order to achieve an underdrive first gear launch ratio the LENCO transmission relies on planet gears which rotate around the sun gear. 1.31% Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. Clutchless Transmission - Liberty's Gears Each planetary gear set is in its own housing and carries a higher ratio. Stay up to date with news and promotions by signing up for our monthlly newsletter. For 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. 1.438% Uses 20 tooth planet gears, a 32 tooth sun gear and a 73 tooth ring gear. This is not possible with a traditional cluster gear transmission. sr1200, Transmissions and Clutches, Racing Transmissions for sale on RacingJunk Shift Patterns: All levers in forward position result in the transmission being in first gear. Lenco CS1 Assembly Help | Yellow Bullet Forums When setting up your clutch packs they need to have the proper air gap or clutch pack clearance. Since each case contains one gearset and provides both underdrive and direct drive,multiple cases (gearsets) provide multiple underdrive ratios. This L.. Lenco Clutch Disk Alignment Tools areavailable in black anodized billetaluminum. This pressure adjustability gives you considerable control when Lencodrives is a CS-2 transmission. The gearset in the third case alone, 1.31:1, determines the third gear ratio. Any new EXTREME transmission is available set up for a Torque Converter Drive Unit at no extra charge.