How To Assembly Fatboy Ss Gear Drive Repair Guide

Difficulty

Moderate

Steps

Time Required

                          1 - 2 hours

Sections

How to assembly FatBoy SS Gear Drive
14 steps

Flags

In Progress

This guide is a work in progress. Reload periodically to see the latest changes!

Member-Contributed Guide

An awesome member of our community made this guide. It is not managed by iFixit staff.

BackFatBoy SS Gear Drive
Full Screen
Options
History
Save to Favorites
Download PDF
Edit
Translate
Get Shareable Link
Embed This Guide
Notify Me of Changes
Stop Notifications

What you need

Step 1

              Prepare parts for assembly

It is best to prepare all the parts for assembly
Hex Keys, Wrenches for wheel nut and wheel hub nuts

It is best to prepare all the parts for assembly

Hex Keys, Wrenches for wheel nut and wheel hub nuts

1024

Step 2

              Attach wheel mounting plate to wheel hubs

Use Provided M3 Bolts to attach wheel mounting plate to the wheel hub.
Nuts should face outside

Use Provided M3 Bolts to attach wheel mounting plate to the wheel hub.

Nuts should face outside

Step 3

              Attach wheel mounting plate to wheel hubs

Make sure to tighten nuts in star pattern to make sure equal tension on all bolts

Make sure to tighten nuts in star pattern to make sure equal tension on all bolts

Step 4

              Preparation to install motors

If you using motors longer than 90mm (80100, 63100 and etc) mount motor directly to the baseplate and skip to Step 5
If using 63xx motors use a masking tape to prevent nuts from falling from motor mounting plate.
Attach the plate and use 4 x M3 bolts to attach motor plate to the motors

If you using motors longer than 90mm (80100, 63100 and etc) mount motor directly to the baseplate and skip to Step 5

If using 63xx motors use a masking tape to prevent nuts from falling from motor mounting plate.

Attach the plate and use 4 x M3 bolts to attach motor plate to the motors

Step 5

              Mount baseplate to the hanger

Use Loctite to secure grub screws on mounting hub
Tighten grub screws and make sure baseplate is flat and not angled

Use Loctite to secure grub screws on mounting hub

Tighten grub screws and make sure baseplate is flat and not angled

Step 6

              Attach motor gear to motor axle

If your motor has keyway use provided keyway.
Use Loctite 648 to secure grub screws inside the motor gear to prevent loosening from vibrations.
Measure position lengthwise to stick out of baseplate
If motor axle sticks out of motor gear it will need cutting of as it would prevent lid from closing down.

If your motor has keyway use provided keyway.

Use Loctite 648 to secure grub screws inside the motor gear to prevent loosening from vibrations.

Measure position lengthwise to stick out of baseplate

If motor axle sticks out of motor gear it will need cutting of as it would prevent lid from closing down.

Step 7

              Attach motor to the baseplate

Use provided 4 x M3 bolts to attach motor (with motor mount adapter if use)

Use provided 4 x M3 bolts to attach motor (with motor mount adapter if use)

Step 8

              Attach wheel gear to the wheel for gear meshing

Use 5 x M4 bolts to attach wheel gear to the wheel hub for gear meshing.

Use 5 x M4 bolts to attach wheel gear to the wheel hub for gear meshing.

Step 9

              Mesh gears

Baseplate should be parallel to the wheel otherwise wheels will mesh on angle and will cause negative effects.
Attach wheel 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.
If wheel gear one side is pulled in or further than other sides check wheel hub bolts probably one bolt is more tighten than others or otherwise
If wheel gear is more inside than motor gear use washers provided to pull wheel gear away from baseplate
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

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

Attach wheel 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.

If wheel gear one side is pulled in or further than other sides check wheel hub bolts probably one bolt is more tighten than others or otherwise

If wheel gear is more inside than motor gear use washers provided to pull wheel gear away from baseplate

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

Step 10

              Lock motor in position

Tighten motor bolts to secure motor in correct position
Remove wheel from wheel gear
Use grease to lubricate gears.

Tighten motor bolts to secure motor in correct position

Remove wheel from wheel gear

Use grease to lubricate gears.

Step 11

              Close the lid

Put the plastic lid with stainless steel plate on top of it and tighten all M2.5 bolts
Dont use too much force as plastic will compress
Lubricate V-Ring using grease on ID and on the flap. Mount the V-Ring on top of wheel gear

Put the plastic lid with stainless steel plate on top of it and tighten all M2.5 bolts

Dont use too much force as plastic will compress

Lubricate V-Ring using grease on ID and on the flap. Mount the V-Ring on top of wheel gear

Step 12

              Attach wheel to the wheel gear

Make sure 5 x M4 bolts are tighten securely.

Make sure 5 x M4 bolts are tighten securely.

Step 13

              Repeat same for other side

Use same instructions for assembling another side

Use same instructions for assembling another side

Step 14

              Test spin

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.

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.

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

Cancel: I did not complete this guide.

Author

                                      with 1 other contributor

                    Aurimas Niekis

Member since: 11/26/2018

695 Reputation

                                      3 Guides authored                  



                       Badges:
                       3

In Progress#

Member-Contributed Guide#

What you need#

In Progress

Member-Contributed Guide

What you need