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How to assembly FatBoy SS Mini Gear Drive

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  1. How to assembly FatBoy SS Mini Gear Drive, Assembly Hanger Mounting hub: step 1, image 1 of 2 How to assembly FatBoy SS Mini Gear Drive, Assembly Hanger Mounting hub: step 1, image 2 of 2

    • Install 4 x M3 grub screws to the hanger hub.

    • Don't forget to use Loctite on grub screw thread

    Edit

  2. How to assembly FatBoy SS Mini Gear Drive, Attach hanger hub to the baseplate: step 2, image 1 of 1

    • Install 4 x M2.5 bolts through the baseplate to hanger hub.

    • Don't forget to use Loctite on threads

    Edit

  3. How to assembly FatBoy SS Mini Gear Drive, Mount the assembly on hanger: step 3, image 1 of 2 How to assembly FatBoy SS Mini Gear Drive, Mount the assembly on hanger: step 3, image 2 of 2

    • Tighten grub screws to lock assembly in place.

    • Make sure the assemblies are parallel to the wheel.

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  4. How to assembly FatBoy SS Mini Gear Drive, Shorten motor shaft for motor gear mounting: step 4, image 1 of 1

    • Cut the motor axle to the 20mm length from the baseplate.

    • Make sure to cover motor, motor wholes and whole motor with something to prevent metal dust getting into the motor. Magnets easily attracts metal particles inside and can cause shortening.

    Edit

  5. How to assembly FatBoy SS Mini Gear Drive, Install Key way: step 5, image 1 of 1

    • Apply this step only if motor has keyway

    • Apply retaining compound like (Loctite 648) to keyway and install in the keyway

    Edit

  7. How to assembly FatBoy SS Mini Gear Drive, If required attach stainless steel plate to the motor: step 6, image 1 of 2 How to assembly FatBoy SS Mini Gear Drive, If required attach stainless steel plate to the motor: step 6, image 2 of 2

    • It is only useful when motor has open areas in the baseplate it minimize grease getting into the motor.

    • Attach stainless steel plate to the motor

    Edit

  8. How to assembly FatBoy SS Mini Gear Drive, Install Motor Keyway to the motor axle: step 7, image 1 of 2 How to assembly FatBoy SS Mini Gear Drive, Install Motor Keyway to the motor axle: step 7, image 2 of 2

    • Tighten M2 grub screws on motor gear to secure motor gear on axle.

    • Don't forget to use Loctite on grub screw thread

    Edit

  9. How to assembly FatBoy SS Mini Gear Drive, Attach motor to baseplate: step 8, image 1 of 3 How to assembly FatBoy SS Mini Gear Drive, Attach motor to baseplate: step 8, image 2 of 3 How to assembly FatBoy SS Mini Gear Drive, Attach motor to baseplate: step 8, image 3 of 3

    • Use 3xM3 bolts to attach motor to the baseplate

    • Don't forget to use Loctite on threads

    Edit

  10. How to assembly FatBoy SS Mini Gear Drive, Attach wheel gear to wheel hub: step 9, image 1 of 3 How to assembly FatBoy SS Mini Gear Drive, Attach wheel gear to wheel hub: step 9, image 2 of 3 How to assembly FatBoy SS Mini Gear Drive, Attach wheel gear to wheel hub: step 9, image 3 of 3

    • Attach wheel gear using 5xM3 bolts to wheel hub for meshing gears

    • This is only pre-fitment Loctite is not yet required.

    Edit

  11. How to assembly FatBoy SS Mini Gear Drive, Prepare gears for meshing: step 10, image 1 of 3 How to assembly FatBoy SS Mini Gear Drive, Prepare gears for meshing: step 10, image 2 of 3 How to assembly FatBoy SS Mini Gear Drive, Prepare gears for meshing: step 10, image 3 of 3

    • Baseplate should be parallel to the wheel otherwise wheels will mesh on angle and will cause negative effects.

    • Add brass washer to axle before mounting wheel hub.

    • Attach wheel hub to the hanger and lower down motor to prepare gear meshing.

    • Motor gear and Wheel gear should be always parallel to each in all wheel position. If gears not parallel and at angle it can cause negative effects and product more noise than necessary.

    • Loosen up motor bolts so that motor gear would press wheel gear.

    • Use sheet of paper to drive it through wheel gear and motor gear. Spin wheel to push paper through the gears

    • After meshing is good tighten motor bolts

    Edit

  12. How to assembly FatBoy SS Mini Gear Drive, Prepare final assembly: step 11, image 1 of 3 How to assembly FatBoy SS Mini Gear Drive, Prepare final assembly: step 11, image 2 of 3 How to assembly FatBoy SS Mini Gear Drive, Prepare final assembly: step 11, image 3 of 3

    • Remove wheel gear from wheel hub

    • Put wheel gear into the cover and attach V-ring on the wheel gear.

    • Use some grease on v-ring to make it easier to slide on the cover.

    • It is good time to apply grease to the gears

    • Use 6xM2.5 bolts to attach motor cover to baseplate

    Edit

  13. How to assembly FatBoy SS Mini Gear Drive, Attach Wheel Hub: step 12, image 1 of 3 How to assembly FatBoy SS Mini Gear Drive, Attach Wheel Hub: step 12, image 2 of 3 How to assembly FatBoy SS Mini Gear Drive, Attach Wheel Hub: step 12, image 3 of 3

    • Check that everything looks okay

    • Put wheel hub on the axle again

    • Use 5xM3 bolts to attach wheel hub back to wheel gear.

    • Don't forget to use Loctite on threads

    Edit

  14. How to assembly FatBoy SS Mini Gear Drive, Repeat same for other side: step 13, image 1 of 1

    • Use same instructions for assembling another side

    Edit

  15. How to assembly FatBoy SS Mini Gear Drive, Test spin: step 14, image 1 of 1

    • Do a test spin on the bench to make sure everything is fine and sounds okay

    • On the first test ride start by slowly accelerating and slowly braking to make sure everything is working fine.

    • If there is some minor vibration happening at specific RPM it can be some misbalance in wheel/gears which should disappear after gears sit down in their place.

    Edit
Conclusion

To disassembly gear drive, follow these instructions in reverse order.

Author

with 1 other contributor

Aurimas Niekis

Member since: 11/26/18

695 Reputation

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