Thanks for the responses guys, also no probs on the first response I got, I know the Emaxx is an odd choice but I love the stance of it and the way it drives, it's actually my preferred vehicle for bashing about the park etc as the other vehicles I don't drive much unless I'm at a race track, with exception to the SCX10 of course.

That and I am loving building it, it's just this one last piece that is causing so many problems. Once this is sorted out that should be my drivetrain finally sorted for 6S.

I will have a look through the available options posted in this thread on the weekend, tend to work long days through the week so I don't have a lot of time to get into to much right now but some of the options I have already checked.

Windrake: it's not the crown / pinion blowing, it's the spider gears.

The gears turn fine when the diff is assembled, no free play and no binding. Even after install they are fine. Yet when I start driving, within minutes they are toast. That's not jumping and shock loading them by holding down the throttle, no standing wheelies or anything like that, I'm quite mechanically sympathetic.

http://www.amainhobbies.com/product_...r-Differential

Is this diff considered a straight drop in?

Another option I considered is this one;

http://www.amainhobbies.com/product_...htning-Stadium

But I read somewhere you needed the straight cut gears as the crown gear in spiral cut will not fit for whatever reason, they don't however seem to make them anymore.

Help is hugely appreciated.