MX5 diff casing

[robo]

Originally Posted by Big Vern

Oh Boy here we go again
I thought we'd cleared this one up but it appears not!
The diff needs to be constrained properly to avoid failure. The ally casting is up to the job it was intended to do. It's when its not used as intended there are problems. So long as the diff nose is correctly constrained in the Z axis there shouldn't be any problems. I have first hand experience of this and many years of experience working with Mazda power plant frame cars.
The fabricated cover you have designed may make the diff more usable in varying installations so long as the diff nose is suitably constrained.
Does seem like a sledgehammer to crack a nut though.
£95 seems mighty cheap considering the work that will be required to produce it, but then I guess you know your business Phil

This is my take on the whole thing for what its worth. To try and restrain the diff from that close to the center of the diff is impossible. There is no room on the drivers side to run a torque control arm forward but there is on the nearside. So why not design a control arm that picks up the original holes on the diff and take an arm off of that up the gear tunnel as far as poss, maybe even up to the gearbox mount. I would consider that the problem solved with the minimum of fuss.

Old and stupid Bob