Saturday , 30 May 2020
Home » RC Build Blog - Axial Yeti XL Build » Axial Yeti XL Build – Part 1 – Front Differential

Axial Yeti XL Build – Part 1 – Front Differential

Axial Yeti XL Build – Part 1 – Front Differentials

The Build – Part 1
The first thing Axial has you doing is building the front differential. It’s like any standard fluid-filled diff, however it’s massively over-built to withstand the monster power you can run through this truck.

Build Notes:
This part of the build requires us to use diff fluid. It’s a good idea to have a clean working surface that is covered with a towel (or something similar) and some clean-up rags.
Step 1:
Axial Yeti XL Build – Step 1
Since both the front and rear diffs are essentially the same (other than the drive cups), I started this part of the build by separating all of the parts to make it easier to recognize what I needed. Sorry for the blurry picture; not sure what happened there.
Step 2:
Axial Yeti XL Build – Step 2
Speaking of the drive cups, I’ve shown both here for reference. The top one is for the front (this build step), the lower one is for the rear.
Step 3:
Axial Yeti XL Build – Step 3
Slip one of the 8×16 bearings over the diff gear and slide the front drive cup through.
Step 4:
Axial Yeti XL Build – Step 4
Flip the assembly over and slide a red o-ring over the drive cup shaft followed by a 6×19 shim. Press the shim down firmly to seat the o-ring.
Step 5:
Axial Yeti XL Build – Step 5
There are two lengths of drive pins as well. The short ones will be used during the diff build; the longer ones for the CVD build.
Step 6:
Axial Yeti XL Build – Step 6
Slide one of the shorter pins through the drive cup shaft as shown. Take one of the metal sun gears, slide it onto the shaft and key it to the pin. Set this assembly aside.
Step 7:
Axial Yeti XL Build – Step 7
Carefully set the diff gasket into place, lining the holes up with the holes in the gear.
Step 8:
Axial Yeti XL Build – Step 8
Slide one of the 8×16 bearings onto the diff housing as shown. Take the other front drive cup and slide it into place.
Step 9:
Axial Yeti XL Build – Step 9
Flip the assembly over and slide a red o-ring over the drive cup shaft followed by a 6×19 shim. Press the shim down firmly to seat the o-ring.
Step 10:
Axial Yeti XL Build – Step 10
Line up the hole in the outer housing with the hole in the drive cup shaft. Slide one of the shorter pins through the housing and into the drive cup shaft.
Step 11:
Axial Yeti XL Build – Step 11
Once the pin is installed, screw a M4 setscrew into the hole and make it flush with the outside of the diff housing. This will seal the diff and keep any fluid from leaking out.
Step 12:
Axial Yeti XL Build – Step 12
Flip the diff housing over and slide the sun gear over the drive cup shaft, keying it to the pin.
Step 13:
Axial Yeti XL Build – Step 13
Build two sun gear assemblies.
Step 14:
Axial Yeti XL Build – Step 14
Lining the sun gear assembly shaft up with the notches in the housing, place one assembly into the diff, making sure the flat spot on the shaft is facing up. Place the second sun gear assembly into the diff, making sure the flat spot on the shaft is facing down. They two flat spots should key together. While holding the assemblies in place, slowly turn the drive cup to make sure both sun gear assemblies are completely seated.
Step 15:
Axial Yeti XL Build – Step 15
Fill the diff housing up with the included 20000CST fluid. Put just enough that it covers the top of the gears.
Step 16:
Axial Yeti XL Build – Step 16
Take your gear-side assembly and flip it over onto the housing side, making sure you line up the holes in the gear to the holes in the housing. Screw together slowly, rotating the drive cups once or twice to make sure they are meshing correctly.
Step 17:
Axial Yeti XL Build – Step 17
I like to write on the diff what fluid is in it as well as which end of the car it goes. Of course this is completely optional, but it is a good idea to help you keep track.

Front differential done!

Axial Yeti XL Build – Part 1 – Front Differential
Axial Yeti XL Build – Part 2 – Front Gearbox
Axial Yeti XL Build – Part 3 – Rear Differential
Axial Yeti XL Build – Part 4 – Rear Axle
Axial Yeti XL Build – Part 5 – Front Suspension
Axial Yeti XL Build – Part 6 – Steering
Axial Yeti XL Build – Part 7 – Chassis
Axial Yeti XL Build – Part 8 – Electronics
Axial Yeti XL Build – Part 9 – Transmission
Axial Yeti XL Build – Part 10 – Rear Suspension
Axial Yeti XL Build – Part 11 – Shocks
Axial Yeti XL Build – Part 12 – Body, Wheels, Tires

Back to the Axial Yeti XL Build List

About Tony Phalen

Tony Phalen - As an avid RC enthusiast, Tony has been building, bashing and racing RC Cars for over 25 years. He has raced everything from 1:18th scale trucks to 1:5 scale motorcycles and everything in-between. He's also worked on both sides of the industry fence; working at and with many major manufacturers (as well as being a sponsored driver) to working for a high-profile industry magazine. During this time he has learned many tricks, tips and techniques and has transferred that knowledge to CompetitionX - the most informative RC website on the internet! More articles by Tony Phalen

Check Also

Yokomo YZ-4 SF 2 4WD Offroad Buggy | CompetitionX

Yokomo YZ-4SF2 4WD Offroad Buggy | CompetitionX

Yokomo has announced a new wheeler to their lineup – the YZ4 SF2! This new …

Leave a Reply

Your email address will not be published. Required fields are marked *