Ring gears

[ROCKST*R]

Picture speaks for itself, I have now had a total of three ring gears crack in my creeper 2 of them cracked across the screw hole they were screwed on with , I believe this was because of the alloy diff cases I am running because they only have 4 holes in them instead of the 8 in the standard cases. The gear on the right came straight from venom like that but because they have great customer service they rteplaced it completely free of charge"thumbsup"The gear on the left just simply cracked from usage on a bone stock rig with a stick pack and 55t motor and the middle one cracked after zero usage i just put the diff in came back a week later to lock the diff properly and all 4 threadlocked screws were loose and the gear had a crack in it

Just wondering if any of you had this same problem?

Is there any way to make an axial ring and pinion set fit?

and all the cracks are at 12o'clock in the pic

 

[Docwolf]

bad housing......something has to be warped , run a file across it.

 

[ROCKST*R]

bad housing......something has to be warped , run a file across it.

sounds likely but one was from the front one was from the rear and the one from the rear hadn't even been run so unless I have 2 warped housings or have done the same thing wrong twice with both diffs?

I have no clue, am open to more opinions because they may give me ideas and may help pinpoint the problem

 

[Docwolf]

the only reason it would break is from strain, the only way you could put that kind of stain on it is if it was not flush when tightened. either the housings are bad, of the ring gears are bad... OR something was under them....OR they where not fully seated..

 

[meatmonkey]

Any chance your overtightening the ring gear bolts?

I'm surprised the aluminum cases take fewer bolts. Seems to defeat the purpose of "upgrading" it.

 

[ROCKST*R]

Any chance your overtightening the ring gear bolts?

I'm surprised the aluminum cases take fewer bolts. Seems to defeat the purpose of "upgrading" it.

That's what I was surprised about, I thought 8 bolts is better than 4. I'm not the sort of person to over tighten things, just enough then thread lock to hold it there.

There is a small chance that a bit of dirt could have got on the case or gear and caused this but I think that the problem is 4 bolts and the rounded countersink that tries to spread the gear when it is tightened stressing the gear too much. I'll get another gear and try putting thread lock on the surfaces before I tighten it all down.

Thanks guys"thumbsup"