Stiggy Mills Your next design?

Stiggy Mills Your next design?

Author
Discussion

Stuart Mills

1,208 posts

207 months

Wednesday 2nd May 2012
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KDIcarmad said:
Stuart Mills said:
this would have been a better angle, the picture is Mazdas MX5 Superlight, that's what inspired me.
Like yours more than this. It looks like the top was just taken off! Your design looks more like it was intented not to have a roof.
Thank you, the Mazda was a concept I think and was a modified MX5 MK3. The down side being that it will be considerably heavier than the MEVX5 Superlight as we ditched the monocoque and designed a lightweight tubular spaceframe chassis for it. The MEV is over 300kgs lighter than an MX5.
Only time will tell if the kit car buyers will come flocking.
The feedback I am getting from various forums is in general that the retro wheels/ weird paint scheme are not pleasing to most, but that's why we love kit cars. Very rare to see a matching pair.

wemorgan

3,578 posts

179 months

Wednesday 2nd May 2012
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Stauart Mills - I take my hat off to you for developing so many products in such a short time and keeping your eye on the ball - cost and mass.

Many people and even OEMs talk the talk, but by the time the product goes to market so many compromises have been made.

My key reservation, which is understandable considering the size of your company and the price of your cars, is the amount of R&D you are able to invest in to your chassis design. For example the design of the front wishbone upper mounts on the Rocket. To me they look like they lack stiffness. I could be wrong, but just a visual observation. Good luck to you nonetheless.

Stuart Mills

1,208 posts

207 months

Wednesday 2nd May 2012
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Highly qualified structural engineers are paid to check MEV chassis'.
The Rocket upper bone mount has virtually no verticle load as it is a pivot, lateral forces are transfered to the main rails at the top shock mount point.

Noah Katz

20 posts

146 months

Wednesday 2nd May 2012
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Steffan said:
One of the primary advantages these kits offer, over those of your competitors, in the UK Kit Scene, is the inherent advantages gained from basing the kit on a donor vehicle, from a quality manufacture, that was initially designed itself to provide precisely the same use, numbers of passengers, weight and purpose of vehicle.
Weight?!

Steffan

10,362 posts

229 months

Wednesday 2nd May 2012
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Noah Katz said:
Steffan said:
One of the primary advantages these kits offer, over those of your competitors, in the UK Kit Scene, is the inherent advantages gained from basing the kit on a donor vehicle, from a quality manufacture, that was initially designed itself to provide precisely the same use, numbers of passengers, weight and purpose of vehicle.
Weight?!
What is your question, please?

Noah Katz

20 posts

146 months

Wednesday 2nd May 2012
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Sorry, I thought it was obvious - one of the primary attractions of a kit car to many is that it will weigh substantially less than the donor.

wemorgan

3,578 posts

179 months

Thursday 3rd May 2012
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Stuart Mills said:
The Rocket upper bone mount has virtually no verticle load as it is a pivot, lateral forces are transfered to the main rails at the top shock mount point.
Though less than the damper mounts, the y-axis (lateral) loads are significant on wishbones.
But don't take my word for this - have a chat to Lotus or another automotive consultant - I believe they'll say the same.

Stuart Mills

1,208 posts

207 months

Thursday 3rd May 2012
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Forgot to mention, the doors do open, I just felt it looked neat without a handle on the outside and as there is no window the interior handle is easy to access. The door openings are slightly obstructed by the chassis rails which give a "high sill" to allow loads to be fed directly to suspension tops.
We still have an "open box" chassis but triangulation is introduced at the front and rear bulkheads to aid torsional rigidity.

AdiT

1,025 posts

158 months

Thursday 3rd May 2012
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Stuart, will the coupe or convertible body fit on the lightweight chassis?

Stuart Mills

1,208 posts

207 months

Thursday 3rd May 2012
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Hi, it will fit but then it has no screen so an imaginative builder would need to graft the MX5 one on.
That maybe a fairly involved job of cutting and then making suitable mounting brackets to bolt it to the Superlight chassis but I have no doubt someone will do it.

Stuart Mills

1,208 posts

207 months

Thursday 3rd May 2012
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You can just see here how the screen could be bolted on as the clam is partly lifted

OlberJ

14,101 posts

234 months

Thursday 3rd May 2012
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Superlight chassis'd coupe was my original thoughts. A la Ginetta G40R

Would need to add the screen and the wiper mechanisms and mountings too. And rig up some sort of windscreen heater?

Would you be able to fit the Mx5 dash in the coupe? I'm thinking steering wheel to front of scuttle panel cut and re-fitted.

Stuart Mills

1,208 posts

207 months

Thursday 3rd May 2012
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It does have a very basic grp dash and instrument pod. There are small electric demisters available that pass IVA and there are also small heaters that are for under seats on mini buses.
This is a stripped out lightweight though, hence the total lack of, well everything, even door cards. The side impact bar in the back of the re skinned MX5 door is exposed but builders may well tidy that area up a little.