[gumleguf]

A bit more info on the RC-Monster center diff mounting plate. It's made from 5754 aluminum and is 5mm thick. 6061 and 7075 aluminum is rare and VERY expensive here but for this application/design 5754 is plenty strong (quote from http://en.wikipedia.org/wiki/Aluminium_alloy):

Aluminium alloys 5052, 5251, 5754 are very similar grades, only differing in the amount of magnesium. 5052 has 2.5% magnesium and is commonly used in the U.S.; 5251 has 2% magnesium and is commonly used in the UK; and 5754 has 3% magnesium and is commonly used in Europe. Due to their formability, corrosion resistance and weldability these grades are commonly used in pressure vessels, tanks, fitting, boat hulls, and van bodies. Their salt water corrosion resistance is better than the 1200 grade and their strength is better than the 3003 grade.

Here are some of the basic measurements of the plate: https://docs.google.com/open?id=0B5q...3B0dzlobDFYYWs

A few more pictures: