RC Beginner Series – Bearings and Checking Driveline

Team Associated
One of the most overlooked items on your RC are the bearings and keeping your driveline running free.  A simple $1 bearing failure can cause premature electronics failure and quickly demise the speed and performance of your RC.  A simple check every few battery packs can help prolong the life of your RC, keep it running well and you having fun!

How to check driveline:

  1. Remove the wheels and body from your RC
  2. Remove the pinion gear from the motor – typically a simple set screw is all that’s holding that pinion on
  3. Hold both rear wheel hexes and give them a spin in the same direction (forward like the video)

Your driveline should spin fairly free for about a second or two – this is a sign that your driveline bearings are well maintained and free from damage.

RC Beginner Series - Bearings and Checking Driveline-car
RC Beginner Series - Bearings and Checking Driveline-tires

 What if your driveline is binding?

Start with the outermost bearings, typically on the wheel hubs or carriers.  Spin these items and see if there’s any binding.  Repeat for all sides of the carriers and hubs, as they have typically 2 bearings per point.  Next move to the center driveline including the slipper clutch/center differential and the front and rear differentials.

As you go through he bearings, give them a good wipe down with a clean towel and test that they’re spinning freely.

All bearings are not created equal.

I prefer single sided rubber sealed bearings.  They have one side with a rubber seal and the other is somewhat open.  When replacing, use rubber side toward where dirt can enter.  Example, if replacing the outer most rear hub carrier, you should see the rubber seal on the outside of the car.  These types of bearing are also fairly inexpensive at about $1 a bearing.  It’s almost more cost effective to just replace the bearing vs opening, cleaning and re-oiling them.

RC Beginner Series - Bearings and Checking Driveline-bearings

Well, there you have it, a quick and easy way to check your driveline and make sure your RC is in tip top condition.  Now, get out there and check your driveline!

RC Beginner Series Topics

Jan. –  Tools needed for your new RTR/Using your Owners Manual
Feb. –  Battery Safety/Lipo rules/Battery Choices
Mar. – Ride Height Adjustment/Shock Collars
Apr. – Trims and Dual Rate on your Radio
MayClean Your RC – Compressed Air
Jun. – Changing your Pinion/Gear Mesh
JulyAdjusting Body Height
Aug. – Adjusting Turnbuckles – Camber/Toe
Sept. – Inspecting Bearings/Free Driveline
Oct. –  Adjusting Slipper Clutch
Nov. – Inspecting Suspension/Free Suspension
Dec. – Shock positions


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