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Mendeola transaxles

MD4E: The MD4E  is Mendeola’s entry-level transaxle but uses the same case as the MD4-2D. While this gives it strength, it also means that the MD4E can be upgraded whenever needed to handle more horsepower. It can handle 325 horsepower in the sand and 175 horsepower off-road with a max vehicle weight of 1,950 lbs. Adding to its strength is a Ford 9-inch spider differential and a 10-inch diameter ring gear. Weddle Racing 002 gear sets are used as well as a 300M, VW-style 24-spline input shaft to add further beef. A 5.14 ring and pinion ratio is standard with options including a 4.11 or 4.86 gear ratio, mid-engine shifter and aluminum intermediate housing.

MD4-2D: The MD4-2D is known by most simply as the 2D and is one of the most used transaxles in the sand and off-road car market. Built to withstand 375 horsepower and a max vehicle weight of 2,200 lbs., the 2D uses extra wide Weddle Racing gearsets and an A-356 T-6 aluminum casing. Further strength comes from a G50 style, 300M one-inch input shaft, along with billet slider hubs and input coupler. High capacity bearings on the pinion and main shaft are also used. The 2D comes set for 930 CV joints with either a 4.86, 5.14 or 5.42 ring and pinion. Options include 935 drive stubs, reverse rotation ring and pinions and a mid-engine shifter.

MD5: The MD5 shares all the same attributes as the MD4-2D but adds a fifth gear for those who need better fuel mileage or reduced RPM at speed. Off-road racers utilize the MD5 as well for the ability to stack third, fourth and fifth gears. In fact, this gearbox has won the SCORE-Lite Championship three times. Options include 935 drive stubs and reverse rotation gears.

S4/S5: The S4 and S5 are Mendeola’s sequential shifting gearboxes with the S4 featuring four forward speeds and the S5 offering five. Both feature 85mm shaft centers, super-duty 28mm-wide Weddle gearsets, 19mm reverse and 935 flanges. The S4 is equipped with 1.090-inch wide drive members while the S5 driving members are .800 inches wide. With its slightly smaller drive gear dimensions, the S5 handles 20 to 25 percent less torque than the S4, which is rated to handle 425 horsepower in a racecar, 500 horsepower in a pre-runner and 600 ponies in a sand car. Helping to achieve these numbers is the use of a hybrid Dana 60 differential and a 1 3/16-inch, 18-spline input shaft made from
300M. The S4/S5 are available with 4.57, 4.63 or 4.86 ultra-duty ring and pinions, along with six- or eight-lug dog rings.

S4D: The S4D is Mendeola’s heavy-duty, four-speed sequential transaxle. Built to take up to 650 horsepower, 37-inch tires and up to 4,500 lbs. of vehicle weight, the S4D is meant for serious sand buggies, heavy-duty pre-runners or Unlimited class racecars. It uses a massive 11.5-inch Forged 9310 VAR ring and pinion set, super-duty 14 Bolt Alloy differential and eight-bolt HD4 style pinion bearing housing. Billet aluminum side covers are used along with an A-356 T-6 aircraft quality aluminum case. A V8 bell housing comes standard and is set up for a proprietary Kennedy 8-inch triple disc full metallic clutch. A beefy 19mm reverse gear and 6.5-inch differential bearings make this one stout transaxle. Thanks to new gearsets that feature integrated dog rings, there is also an S5D upgrade available like the one featured in our new AlumiCraft “Plug N’ Play project.

HD4: Mendeola calls the HD4 the strongest racing transaxle on the planet and refers to it as the Transaxlesaurus. It can handle up to an amazing 1,600 horsepower on the sand and 850 horsepower in an off-road racecar. A four-speed sequential unit, it’s based on 101mm shaft centers with a massive 13-inch ring and pinion. All gears have replaceable faceplates and the massive differential features 8-inch carrier bearings. A huge
22mm reverse gear is standard and it accepts KEP triple-disc metallic 8-inch clutches. The HD4 can also be equipped with a torque converter, giving it the ability to take even more power. It is built to be a take-no-prisoners transaxle that delivers brute strength and unmatched reliability

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