NTS MX5 Build

[Johno]

Hi guys,
I know this is getting a bit of a concern but this is what I have came up with.
I decided to make a brace between the top of the diif mountings to tie the two together as if it were a chassis. I've fitted two rubber mounts off the back seat rail one in compression and one in tension at all times (tight bugger to fit)....LOL but seems rigid enough.





Sorry no triangulation just old plain engineering....LOL



Also fitted lower diff washers as per photo...




Well if that's not good enough I'm going to get a sore backside as well, because that's what I'm fitting to my car...

Have a good weekend Johno..

[Johno]

Ok then whats the verdict,
What do we have to do to make this safe?
I don't think it's possible to make a frame to go along the transmission tunnel as per the MX5 unless you widen the tunnel. My son is going to be the first passenger so i need to get it right.

Johno

[mark]

Originally Posted by Johno

Ok then whats the verdict,
What do we have to do to make this safe?
I don't think it's possible to make a frame to go along the transmission tunnel as per the MX5 unless you widen the tunnel. My son is going to be the first passenger so i need to get it right.

Johno

Simple, 6 bolts 2 brackets and a ford diff

[robo]

I spent some time looking at this and noticed that all the broken beams I have looked at on the net <dozens of them>are broken on our nearside . That I reckon it is due to the diff being mounted on the offside and when the diff is loaded its putting the beam on the nearside under a lot more pressure. A bit like a tripod with unevenly spaced legs. That brace gadget thing I saw spreads the diff loadings at the nose of the diff evenly. Just a theory I will keep eating the toblerone

Bob

[CTWV50]

I don't think you have anything to worry about Johno, if you are worried still use steel for the tub back and make sure you have and inch of play at the gearbox end of the propshaft. That's what I'm doing anyway! And test first without child.

[CTWV50]

Robo they are design to fail on that side.

[robo]

Well all I can say is something needs doing, the yanks have dealt with the problems with the braces. In normal hairdressers mode the car probably has no issues but these things are going to get a spanking and as the mx5 fails so will the roadster version. Needs looking at.

bob

[costlow7]

I have just noticed something, I dont know if it is that important but if you look at the saturns/nts mx5 build guide revision 3 page 30 you will see the diff in the car. If you look closely you will see two very small cut outs notches top and bottom on the right hand side of the ally casting, if you look at nathans post you will see that the diff broke at this point. I know it broke because of other reasons and this has probably nothing to do with it, apart from this being a bit weaker. I have not checked my diff yet for these marks, just thought I would mention it.