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April 27, 2021 @ 10AM-12PM PT | April 28, 2021 @ 2PM-4PM PT

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Parallel shaftlayout was chosen for the following reasons:

  • Createsacompact layout and housing design.
  • Utilizes helical gearing to maintain better tooth contact between meshing gears. The helical gears were also selected for noise reduction at high speed operation.

Other design choices to note:

  • Rectangularhousing uses flat plates bolted together for ease of assembly and manufacturing.
  • Tapered roller bearings to help support the axial loads produced by the helical gears.
  • Material choice of HT 8620 for gears to provide the strength of gears without oversized face widths.
  • Shafts of HT 4140 material for good machinability and strength.
  • Axial forces can bedirected into shoulders on shafts while the vehicle moves forward.

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The solid blue line shows the torque output curve of the REMY HVH250-115 motor to be used with our drivetrain.

Theoreticalvehicle top speed and traction capabilities which account for various vehicle parameters.

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Torque test set up with the input wrench of the right and the output on the left. A digital torque sensor was used to measure the torque at the input and output shafts.

The linear correlation of torque input to torque output features error bars to indicate the uncertainty of the measurements.

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Specifications
Weight -89.4 lbs
Overall Reduction -8.04:1
Dimensions -19.25” X 9.25” X 12.5”

Custom Components

  • Aluminum Bearing Mounts
  • Aluminum Housing Plates
  • Helical Gears –8620 Case Hardened Steel
  • Heat Treated 4140 Steel Shafts
  • Steel Housing Reinforcement Blocks

Stock Components

  • Ford 8.8” Traction-Lok Limited Slip
    Differential
  • SKF and Timken Tapered Roller Bearings
  • SKF Rotary Shaft Seals

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SharpellTechnologies is currently “gutting” the interior of their 2002 BMW 330ci test vehicle, to the extent where the backseats have now been removed. This area will be utilized to house the battery pack modules as well as the electricmotor that our drivetrain will be coupled to. Our drivetrain will be mounted in between the rear axle shafts of the prototype vehicle,allowing for power to be transmitted to the rear tires.

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