• Welcome to RCTalk! 🚀

    Join the #1 RC community where hobbyists connect, share, and get expert advice on RC cars, trucks, boats, drones, and more!

    • Friendly & passionate RC enthusiasts
    • RC tips & troubleshooting
    • Buy, sell & trade RC gear
    • Share builds & upgrades
100_8961a.webp

Build Showcase Team Associated RC10T4.2FT ("We Are" ST)

A stadium truck that will be with me until...
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, and others.
Busy with Ball Diff

Dirt wise, the outside looks way worse than the inside (sorry, I didn't get that shot).
1768859627467.webp


Cleaning my balls...🧼;)😁
1768860798606.webp
1768860875541.webp


As long as I can get a ball diff to feel smooth and the rings are thick enough to put pressure on... I'll reuse diff rings over and over again.
1768860975894.webp


To reuse the diff rings, I'll first flip them over. After both sides of the rings developed grooves, things get more involved.
Let's get rid of those grooves, as best we can, that the tungsten carbide balls created on the diff rings.

I start doing figure 8s on 220 grit sandpaper... on a flat surface of course. The diff ring can be held down by diff outdrive....
1768861954733.webp
1768862483172.webp


Gooey black grease on thrust balls...
1768863181078.webp
1768863227383.webp


1768863482193.webp
1768863519367.webp
1768863634658.webp


1768865128873.webp
 
I bottom out the thrust bolt's spring, and then I back off a 1/16th of a turn.
1768908204416.webp


Slip the outdrives onto diff building tool (or use two drivers) to test the resistance. The diff gear should be VERY hard to turn using only thumb/index fingers.
1768910988404.webp
1768908251040.webp


New bearings? May as well since I put new bearings everywhere else.
I'll clean/regrease (yes, I do that 🤫 :p) old bearings at a later time when I have many sets to do.
1768908408727.webp


Just one dab of diff lube on the teeth...
1768911619858.webp
1768911661650.webp


I was not a fan of Loctite's first attempt at threadlocker in stick form 🤮🤮 it was terrible 🤮🤮. Vibra-TITE's gel to the rescue! It's been my go-to stuff for many years, but the gel is almost all gone and I see Loctite put out an improved stick formula. Let's give it a whirl...
1768950232255.webp
1768950320019.webp


Somewhere along the way I reduced the power to the tranny and never bothered to change the slipper setup. The VTS slipper (variable torque) with 3 pads is just overkill for a 17.5T motor. I have normal V2 slipper hubs that I was saving for a rainy day build, but I may go ahead and slap them on this T4.
1768908489571.webp
 
What's the diff rebuild tool you're using there?
It's the Racers Edge 7030 Differential Building Tool. 1/10 scale and 1/8 scale diff holders. Probably cost 50¢ to make back in the day. It came with a used SC10 I bought. Took me awhile to figure out what the cutout was for. 😁
Racers Edge 7030 Diff Jig.webp
 
Last edited:
Let's not forget the magical piece this time Rusty...
1769371379626.webp


17 grams of greatness...
1769371243904.webp


Shhh 🤫 Hot Pink gel fingernail polish as a plastic safe threadlocker on the rear screws that secure the bottoms of the shocks. Especially the right side screw. That one has more of a tendency to loosen as the suspension arm articulates.
1769376531914.webp

As clean as it's going to get for this year.
1769377193200.webp

IMG_20260125_182805050.webp
 
Last edited:
Back
Top