axle strengt chart
If you want to work out the relative stregth (for twisting strain) you can take the diameter to the power of 4...
These specs are ok for rear axels, but the fronts have to take into account the uni joints, hubs, etc.
Also, there is a difference in strength from the low pinion to high pinion (reverse cut)... same axel diameters, but the high pinions are weaker (ring gear mostly).
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