Arrma aluminum diff cup

[Mattyd926]

So I go to do my diffs meaning full service and was swapping everything into a Arrma aluminum diff case . Why are the insides not exactly the same .? A pic is worth a 1000 words.

Please indulge me . Thanks
And please no comments about that whatever it is lol inside the old one

 

[Mr.Duke]

The aluminum cup doesn't use the steel inserts that normally go behind the small satellite gears

 

[olds97_lss]

The aluminum cup doesn't use the steel inserts that normally go behind the small satellite gears
View attachment 56972

I wish it did though as the steel pins wear at the channels more than they would if they used the steel inserts.

I had issues with the arrma cups:
https://www.arrmaforum.com/threads/issue-with-the-arrma-alloy-diff-cup-seems-too-long.14517/

I had to not use one of the gaskets and sealed the cap end with RTV instead to make the diff narrower so I could have room for shims to set the ring/pinion gear lash right. Also, the super short screws your forced to use like to back out even with liberal use of blue locktite. I ended up using red locktite on mine and will heat it with a torch if I have to disassemble.