The Strongest Savage Diff Compilation.

[simplechamp]

I think Jahay is in the UK so that would explain the expensive shipping. For him it might make more sense to use the IRC cups even if the alloy is softer. Have to look at the cost of shipping the Nova vs. the cost of replacing the IRC sooner. I think Nova does most (if not all) of their sales direct through Ebay and their website, so you might have a hard time finding a UK distributor.

I have both the IRC for F/R and Nova for a center diff. But haven't tested either of them yet so I can't comment on how big the difference is between the two alloys. I'm pretty sure I remember a post from RCM Mike, when people asked why he used 6061 to make his mounts and not 7075 he said 6061 (not 6082, but very similar) is generally more than sufficient for many RC applications. And as far as the hard-coating, I'm not convinced that it would make a big difference either way.

There is no doubt the Nova cup uses stronger alloy, but the question is how much of a difference will it make, and is it worth it (for Jahay at least) to pay the international shipping. $30 is just shy of the cost of another whole set of 3 of the IRC cups (and they include cross-shafts, gaskets, o-rings, etc.)

[JasonB]

Ah, that splains it. I am curious to hear how these Nova and IRC cups hold up. If they do, word will spread, just like it did when CEN diffs were the ticket, and those things will sell like crazy!

If my plastic cups don't cut the mustard, my next step will probably be the Savage ring gear match drilled to fit a CEN cup or the $15 Boca bearing on a stock cup.