Exocet kit cars using mx5 as a donor

Discussion regarding putting a non MX-5 engine in your MX-5, Exocet, Locost, FM Westfield and other MX-5 based kit cars.

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Exocet Australia
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Re: anyone seen these Exocet kit cars using mx5 as a donor

Postby Exocet Australia » Sun Sep 15, 2013 10:33 pm

Exomotive have already done a 'mirror' design on most of the frame, they are just working out the firewall. Its multi piece CNC bent DOMEX 700 (really really hard plate) so they just have to make sure that the depth for steering column, mounting locations, master cylinder and pedals all line up correctly. If not, I'll be hacking at mine with an oxy to get it to fit, which I really dont want to do.

As for being lucky to build first 10 frames in a year....Challenge accepted :wink:

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Re: anyone seen these Exocet kit cars using mx5 as a donor

Postby project.r.racing » Mon Sep 16, 2013 12:20 pm

I dont understand the challenge either. The donor car has chassis that is mirrored already for LHD/RHD markets.

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Re: anyone seen these Exocet kit cars using mx5 as a donor

Postby deviant » Mon Sep 16, 2013 1:34 pm

The exomotive chassis is substantially different to the UK chassis. Maybe some of the re-design needs a bit more thought for a RHD steering rack and pedal box or something.

I spent a fair amount of time around the UK kit car scene, honestly they can get away with so much that the US and Aus cannot get away with, no bend & torsion tests for a start and people are so much more willing to do some of their own engineering and figure out their own intallations where the US and Aus markets seem to be more interested in receiving a box of bolt together parts.

The MX150R race chassis used in the UK has a bolt in cage with less triangulation than the welded exomotive one.

Interesting thread here: http://grassrootsmotorsports.com/forum/ ... 663/page1/

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Re: Exocet kit cars using mx5 as a donor

Postby Exocet Australia » Tue Sep 17, 2013 6:24 am

Production chassis' can have between 3-5mm difference in mounting holes between 2 cars that come off an assembly line one after the other. That doesn't seem like much, but when you are trying to line things up over multiple points at different locations its a real pain in the @ss.
Exomotive haven't got access to a RHD vehicle, so they're guesstimating location holes in the front firewall. I don't know about you guys, but when I buy something, it want it right, not wrong.

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Re: Exocet kit cars using mx5 as a donor

Postby project.r.racing » Tue Sep 17, 2013 9:23 am

Any reason the dimensions of a UK version cannot be used for the firewall. Or am I thinking way to simple?

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Re: Exocet kit cars using mx5 as a donor

Postby Exocet Australia » Tue Sep 17, 2013 9:32 am

From what Kevin has told me, they've changed most of the internal structure to get the torsional rigidity needed for US requirements. Regardless, I've emailed him and said just send the firewall with no holes cut, and I'll sort it out on the first few frames and give him the correct hole locations

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Re: Exocet kit cars using mx5 as a donor

Postby Exocet Australia » Wed Sep 18, 2013 10:09 am

Exocet Sport frame number 3 is sold. only 1 left in the first shipment so nows the time to jump on it. Deposit is 4k with balance payable when the frame is built. Dont wait!

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Re: Exocet kit cars using mx5 as a donor

Postby spikey » Tue Oct 22, 2013 10:11 am

Just got these through from Flyin Miata, judge for yourself
http://www.flyinmiata.com/exocet/

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Re: Exocet kit cars using mx5 as a donor

Postby Boyracer » Sat Nov 02, 2013 11:50 am

I have a NB8B donor if anyone is interested.
NC Roadie, NC Racey, ND Racey….and a 30AE

Plus several others in the bone yard...

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Re: Exocet kit cars using mx5 as a donor

Postby Exocet Australia » Sat Nov 02, 2013 3:40 pm

Was that from Pickles at Gateshead Lou?

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Re: Exocet kit cars using mx5 as a donor

Postby Boyracer » Mon Nov 04, 2013 8:35 am

Exocet Australia wrote:Was that from Pickles at Gateshead Lou?


Yeah but not the really bent one.
NC Roadie, NC Racey, ND Racey….and a 30AE

Plus several others in the bone yard...

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Re: Exocet kit cars using mx5 as a donor

Postby Exocet Australia » Wed Nov 13, 2013 6:27 pm

First trailer being built this weekend. Woohoo!!!

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Re: Exocet kit cars using mx5 as a donor

Postby mr2 spyder » Thu Nov 14, 2013 6:38 am

Just read this full thread after finding it. I had been aware of something happening with the container thread. Looks Very interesting. Wish I did not have my collection of cars here already as I would be onto one of these for track use. I take it there is someone lined up to do the FG body work? I like the sketched design for body more than the US version. will be interesting to see what sort of body it ends up with or variants. I would love to build one up. I might have to get back into the carbon manufacturing and make up some super light weight parts for these?

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Re: Exocet kit cars using mx5 as a donor

Postby Apu » Thu Nov 14, 2013 10:15 am

Exocet Australia wrote:First trailer being built this weekend. Woohoo!!!


Can you post pics of the trailer please? I'm looking for a lightweight one and would be interested to see what you have.

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Re: Exocet kit cars using mx5 as a donor

Postby Exocet Australia » Thu Nov 14, 2013 4:37 pm

mr2 spyder wrote:Just read this full thread after finding it. I had been aware of something happening with the container thread. Looks Very interesting. Wish I did not have my collection of cars here already as I would be onto one of these for track use. I take it there is someone lined up to do the FG body work? I like the sketched design for body more than the US version. will be interesting to see what sort of body it ends up with or variants. I would love to build one up. I might have to get back into the carbon manufacturing and make up some super light weight parts for these?


Exomotive have just released their aero bodywork, but it looks nothing like the picture I posted a few months back. Looks better than the current, but not as good as the concept.

I had someone lined up to do my glassing, but he's proving to be very unreliable. :evil:

Carbon manufacturing you say???? I could be interested..... :lol:


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