Big Rock Cnc diff went boom

[Caleb90]

So less than a year ago i put a cnc rear diff in my big rock. Because i got sick of replacing plastic diffs. Shimmed it before it went in. Has less than 15 packs on it, as i have been running it less and less because it has been a pita since day one. Today i decided to give it a go, and on the second pack i started getting a grinding noise. This is what i found. better off just buying plastic ones from jennys and calling it good.

 

[Hector_Fisher]

Makes me think even more that aluminum diff yokes are a must.

What kind of power/setup were you running?

 

[RCbuzz]

Whoa! Look at the ring gear though, it looks fine. You think the hardening process didn't take for the input gear or the flex of the yoke?

 

[Caleb90]

Makes me think even more that aluminum diff yokes are a must.

What kind of power/setup were you running?

All stock, 2s and 3s

 

[Johnny b]

My bets on the stock yoke flexing. Happened to me.

 

[RCbuzz]

Might need a bulk deal on metal yokes.

 

[morrjr71]

That gear mesh looks bad: the pinion gear is touching the diff case. If there is a shim on the input gear shaft, take it out.

 

[Caleb90]

That gear mesh looks bad: the pinion gear is touching the diff case. If there is a shim on the input gear shaft, take it out.

Its not touching. Mesh was set proper

 

[King blitz]

Out of curiosity did you off road with this? Is your rig a off roader? I just find that those who have these issues are always the ones off roading.which applys a lot of abuse to these rigs .I'm a on road user and I never have these problems.many a times people think these parts will accept the abuse people give them and expect them to last.. everything breaks ..it's no mystery.good luck with your rig and I hope the next diff lasts a little longer .

 

[Johnny b]

Out of curiosity did you off road with this? Is your rig a off roader? I just find that those who have these issues are always the ones off roading.which applys a lot of abuse to these rigs .I'm a on road user and I never have these problems.many a times people think these parts will accept the abuse people give them and expect them to last.. everything breaks ..it's no mystery.good luck with your rig and I hope the next diff lasts a little longer .

But Aarma instructs you to both bash and blast and most on here are in compliance so they don't void there warranty. Aarma insists that you abuse your rig.

 

[King blitz]

But Aarma instructs you to both bash and blast and most on here are in compliance so they don't void there warranty. Aarma insists that you abuse your rig.

Lol I suppose your right..bash em blast em ..have fun ..that's the game

 

[Caleb90]

Uhhh yeah, they litterly come with knobby tires, and suspension for off road. Thats the whole point.

Out of curiosity did you off road with this? Is your rig a off roader? I just find that those who have these issues are always the ones off roading.which applys a lot of abuse to these rigs .I'm a on road user and I never have these problems.many a times people think these parts will accept the abuse people give them and expect them to last.. everything breaks ..it's no mystery.good luck with your rig and I hope the next diff lasts a little longer .

 

[King blitz]

Uhhh yeah, they litterly come with knobby tires, and suspension for off road. Thats the whole point.

I know plenty that use knobby tires on road lol.how am I supposed to know what you used them for.? It was just a question bud .

 

[Caleb90]

I know plenty that use knobby tires on road lol.how am I supposed to know what you used them for.? It was just a question bud .

I would have bought a pavement car if i was going to run on the street

 

[King blitz]

I would have bought a pavement car if i was going to run on the street

Switch the wheels and you got a on road car lol