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Author: Subject: Challenging Project
Prof_Cook

posted on 5/1/22 at 07:43 PM Reply With Quote
Challenging Project

This project is now reaching the stage of "the end of the beginning", so time to start posting...

Progress to date:
Garage cleared of all non "Car" stuff.
Bought relevant books including (of course) Ron Champions Book, suspension design (etc, etc).
Downloaded IVA handbook and have spent many hours going over the demands of the regulations.
Downloaded publicly available photos of target car and similar cars that project car will be based on.
Donor vehicle (Mazda MX-5 Mk1 MOT failure due to rotten sills and associated structures) SORN'd
Donor vehicle dismantled using: Goggles, Strong Gloves, Old clothes, Steel capped boots, Metric Socket Set, 12 hacksaw blades, Cold Chisel and general toolbox (screwdrivers, pliers etc). Many photos taken during dismantling, VIN plates and chassis stamping have been retained.
Wiring looms labelled and boxed with ECU.
Fuel tank and Donor bodywork cut into chunks and disposed of at local recycling centre (VIN plates kept).
Engine/Gearbox assembly placed on home made trolley for movement around garage.
Anything needed for new car has been labelled and stored in boxes, everything else has gone for recycling or in the bin.
Obtained build table wood and ply.
Rear sub-frame dismantled, lower rear wishbone to hub bolts were "frozen" solid so had to be cut/drilled out and hub mounting holes cleaned.
Bought 24 metres of 25mm square/round 2mm wall mild steel tubes for basic chassis/frame.
Bought welder, welding helmet, welding gloves, angle grinder, files.

Planned stages over next 3 months:

1. Depower steering rack.
2. Dismantle front sub-frame, using engine mounting holes to construct jig for engine mounts onto frame.
3. Complete balsa wood (1/8 scale) model of new car space frame setting out major components and checking form, fit and clearances.
4. Bodywork to be modelled in card glued to balsa wood frame.
5. Optimise balsa wood model for maximum torsional stiffness at lowest number of elements.
6. Start construction by laying out and welding up initial frame components.

Known Challenges:
Remoting the gear lever change mechanism - various solutions exist but resources are limited.
Mounting radiator 90 degrees rotated, leaning back to clear nose height.
Retractable light units so can have "clean" lines when not on public road.
Constructing small fuel tank and associated fuel pipework.

Updates - will be provided as work proceeds.....

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Prof_Cook

posted on 5/1/22 at 07:47 PM Reply With Quote
Desired End Car

LinkedPicture
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Prof_Cook

posted on 5/1/22 at 07:55 PM Reply With Quote
Donor car components set out in garage

Donor components laid out prior to final dismantling for check measurements..

RemainsofMX-5donor
RemainsofMX-5donor

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Sanzomat

posted on 5/1/22 at 08:54 PM Reply With Quote
Sound like a great project. I note from your listing you are Bristol based - I'm Yate. Would love to take a look from time to time as you make progress...
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snapper

posted on 6/1/22 at 08:31 AM Reply With Quote
Nice project, I love the proposed car style.
On your list you failed to add treatment for project OCD…





I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)

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russbost

posted on 6/1/22 at 09:10 AM Reply With Quote
Lovely looking car. not dissimilar to the Mazda based Alfa lookalike kit that's available. Are you intending to keep as close as poss to the original, ie single seat or "inflate" it a bit so you can get 2 side by side?





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roadrunner

posted on 6/1/22 at 09:48 AM Reply With Quote
Looking like a great project. Love the look of the car.

Forum rules :- lots of updates and photos please

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nick205

posted on 6/1/22 at 10:26 AM Reply With Quote
Nice looking car!

I'm sure you're aware of the rules on open wheel cars, but if not then read up on them as there's limited places you can use such cars.

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russbost

posted on 6/1/22 at 10:55 AM Reply With Quote
quote:
Originally posted by nick205
Nice looking car!

I'm sure you're aware of the rules on open wheel cars, but if not then read up on them as there's limited places you can use such cars.


If it has mudguards on then it is no more "open wheel" than a 7 is





Furore Formula Car - the only two seater modern Formula Car lookalike. I no longer run Furore Products or Furore Cars Ltd, but would still highly recommend them for Acewell dashes, projector headlights, dominator headlights, indicators, mirrors etc, best prices in the UK! Take a look at http://www.furoreproducts.co.uk/ or find more parts on Ebay, user names furoreltd & furoreproducts, discounts available for LCB users.
Don't forget Stainless Steel Braided brake hoses, made to your exact requirements in any of around 16 colours. http://shop.ebay.co.uk/furoreproducts/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1

NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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Prof_Cook

posted on 6/1/22 at 08:10 PM Reply With Quote
Update from "builder"

Putting "builder" but only thing being built at the moment is the balsa wood model!

Sanzomat : Cheers, good to hear from you, yes will let you know as project proceeds.

Snapper : Thanks for the feedback and good to hear from you.

Russbost : Many thanks for your interest. Aim is Single seater to maintain close to the proportions of the "original" but am filleting the design in length and height around the engine bay to permit easier access to engine, aim is to finish balsa model this month. Problem with the "alfa" based kit is that it is a kit and costs money and I am aiming to see what can be built at minimum cost. Donor car was "free" as cost me £1,500 and then ran for 3 years before failing MOD. My ethos across the project is minimum cost, For example the build table cost £10 for the screws and other fitments to be able to put together soon the seasoned 4in by 2in timbers that a builder kindly provided for free from his skip. Another builders skip provided 4 sheets of 8ft by 4ft structural timber sheets for the table surface. The only resource I am not limited in is time.

Nick205 : Many thanks for your warning. Aim is to build road legal as will not be driven on circuits. Looking to have "conformal" black mudguard on black tyres so hopefully from a distance mudguards will not be overtly visible.

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nick205

posted on 7/1/22 at 11:41 AM Reply With Quote
Noted - if mudguards are planned then that covers the issue.
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Mr Whippy

posted on 7/1/22 at 12:40 PM Reply With Quote
I hope your going to fit a substantial roll bar as crashes in these vintage style machines are scary. They were mad in those days,
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Prof_Cook

posted on 10/1/22 at 07:44 PM Reply With Quote
Roll Bar

Hi Mr Whippy. Yes you are correct will need substantial roll over protection, more than just a 25mm 1.6mm thick tube roughly bent to shape round a tree trunk. Problem I have is no tube bending equipment. Elsewhere on the "Net" some enterprising individual constructed a stainless steel roll over from this type of tube and then bolted it to their car chassis: Bike Stand

[Edited on 10/1/22 by Prof_Cook]

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Sanzomat

posted on 11/1/22 at 09:45 AM Reply With Quote
quote:
Originally posted by Prof_Cook
Elsewhere on the "Net" some enterprising individual constructed a stainless steel roll over from this type of tube and then bolted it to their car chassis: Bike Stand

[Edited on 10/1/22 by Prof_Cook]

Unlikely to give you motorsport approval but with 48mm dia and 2.5mm wall thickness I suspect it would be strong enough for most road use as long as it is well mounted and braced.

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