I'm not 'acting' one way or another, simply sharing my experience. I consider the scenario where I had two rear diffs fail overly abusive. Just because you CAN do something with a given product, doesn't mean it SHOULD hold. There are no stated warnings not to jump 30ft high with a MT, even though it may be capable of doing so, just as there are no stated warnings not to do standing backflips with oversized tires. The specs simply state that the truck is capable of running 6s, not that you can abuse to a given point and not incur damage. Ideally, it should not fail, but at the price point of the truck itself, I'm one that can look past that detail. I no longer attempt standing backflips as often, but when I do I just make sure to tap the brakes mid air to transfer some weight from the rear to the front, inducing a flatter landing, and taking stress of the drivetrain, and the diffs have held up well.

Any idea as to where the best place to get an aluminum case would be?

As expected, fan boy post.... As I mentioned, you do not need to "abuse" truck to grenade the diff, simply pull the throttle using a 6s with some traction. Traxxsucks obviously knows about the problems and does nothing to fix it.. That's a great company!! You deserve them!

Wow! I'm excited!! I must have some super rare, magical ring and pinion gears! Just give throttle with 6s while keeping traction you say? That's crazy, I've done just that but these gears just keep going. I wonder what I'm doing wrong

Yeah, you must have bought yours from the same guy that sold Jack his bean stalk....

meno1103: DNFTT

eBay. STRC Diff Case here.

Or Stormer has the blue Integy cases still.

That's about all I can find. Seems like it's harder to find Revo parts then Maxx parts, despite the Revo being the flagship now. Weird.

All brushless high power car diffs need shimming no1 put quality bearings in new diff no2 replace plastic diff case with alloy no3 lube with100wt oil not grease no4 diff problems solved

Not to put too fine a point on it but ANYTHING running 6S will need near constant maintenance.

Think NHRA top fuel/funny car where the engines get opened up on an average of every 5~10 MINUTES of run time.

If you don't mind spending more time working than running then stick with 6S.

It's possible to build a stock traxxas diff that will hold up to as well as anything else to 6S but it's not something I can explain in a few paragraphs and requires a through working knowledge of how to properly remove any trace of backlash without binding anything up. If you really want to a badazz traxxas diff take a set of diff cups to your friendly neighborhood machine shop and get them to make you some press in inserts for the blind side of the cup. You will also need several different sizes of shims, some grease with a droop point of at least 500F, and the ability to feel the difference between no backlash and binding.

I have cars and trucks that I run 6s in (5 in particular are a Savage flux, GT2Pe, DM-1 conversion and 2 Mugen ECO) none of which needs any "more" maintenance (because of a 6s) then any other unit I've owned. Some have said that this traxxsucks is a 10th scale and it needs work to handle a 6s and that's fine but they should not advertise this truck being able to handle it was my point..

funny vorza can handle 6 s power and is just as heavy. they use spiral cut gears for strength, no issues.

Truck aside, spiral cut gears don't really add any strength versus bevel cut, and cause other issues when you run the spiral in reverse. Helicals also have issues with axial loading (the helixes will push apart), so shock loads will actually harm them more then your standard bevel gear.

http://en.wikipedia.org/wiki/Gear#Helical

They actually wear harder. The real benefit to Helical Gears is that they are quiet, and don't whine like standard bevel cut gears at high RPM. The power transmission is also a little smoother, since there is more gear material in contact with itself, and the resulting friction reduces drive lash.

Bigger fan of bevel gears myself. Louder? Sure. But more suited to bad situation driving. Though I can see why Helical Gears are popular in racing, where you just drive a track.

New and revised RCM hybrid diff cases should be coming out soon (within a month according to Mike). Finally ERBE owners can kiss all their diff problems goodbye.

The single biggest issue I see with people blowing out diffs is they always run their slipper clutch too tight !

I have had my EREVO since the very first day they were released (bought the brushed version as the brushless version wasn't available) and I have never had a diff go bad , but I make sure that slipper is set right so it does its job and absorbs the shock loads put on the driveline from landing on throttle . I dont know why people think standing backflips are so cool when it probably is the most harmful thing you could do to your RC .

First off where have you EVER seen Traxxas advertising their vehicles capable of handling 6S.

I talk to their techs all the time and in private they even hedge when asked about 4S.

The most Traxxas has ever officially said run in their brushless rigs was 3S.

Be that as it may, I build Traxxas cars for 3 different people who all run 6S and none of them have much problem beyond a shorter maintenance interval on the driveline than one might have running 3 or 4 cell.

Oh and they are all street/rally cars. Two are 4x4 LCG slash converted to street and one is a rally and all 3 are fast as hell.

+1 on the slipper. If you are racing electric, slipper adjustment is your single most important tuning tool after tire selection.

As for the standing backflip, they do it for the same reason they used to roll reverse than slam forward to get wheelies back in the brushed motor days. Also the most harmful thing one could do to both motor and ESC.