Half built cars

[thackery]

Hi all I wondered why is it so difficult to get a roadster through the IVA as there seems no shortage of half built cars going to waste

[David]

Re: Half built cars

I've often wondered if there's a list that someone (YKC) has created when getting the original Roadster IVA compliant.

[b_caswell]

Re: Half built cars

Hope fully this should be some reading matter


Sorry struggling to attach document.

[b_caswell]

Re: Half built cars

Try againNotesfor Vosa IVA with old Marlin roadster kits

The first thing to do is some serious homework on what isinvolved and how much time and money is available.

“Kit car” magazine did produce a useful condensed booklet coveringthe main points of IVA but not sure if this is still available, however theVOSA IVA manual is available online.

The link is to this is < https://www.gov.uk/vehicle-approval/individual-vehicle-approval-manuals>..... and kit cars come under the category M1.

Have a scroll through before trying to read it fully thenrefer to these notes from me that are more Marlin specific. Can’t guaranteethat I have covered every issue but I have done my best.

Section...06.....Door latches..... The design of theRoadster door is such that you will need to source special double latched locksbut they are available from kit accessory suppliers.

12....Interior fittings dashboard etc.... You will need to ensure cockpit edgesand dash have a radius edge to prevent injury.

14....Steering wheel and column.......You will need to have an approved type steeringwheel and study the design of the column assembly to comply.

16....Exterior projection....The leading edges of the front wings and suspension plusthe windscreen frame and other sharp edges will need to have a radius or beprotected.

19 and31.... Seat belt anchorages will need to have recognised threaded feruleswelded in to take correct grade of bolts and the shoulder height from the seatto the top mount will involve either a very thin seat squab or lowering the floor(quite a straight forward procedure) to get the measurement required. Plus thelater add on seat belt tower to mount the bracket (There is a drawing for this(in technical tips) that would involve some simple engineering).

45....... Windscreen ....... will need to have the required markings Itis possible to get specialist windscreen companies to cut a flat laminatescreen to pattern but I am not sure if they can save the marking or re-etch thenew screen to comply.( You would need to approach your local vehicle glasscompany)
There is an opinionthat you can present the car with the screen and wipers missing but as on theRoadster the frame is integral with the chassis I am not sure if they wouldaccept that. It would be a bit drastic but I suppose you could cut off thescreen frame carefully to weld back on later.



You would be advised to take plenty of pictures of eachspecific stage of the build feature and produce a portfolio of the build topresent along with the car. This also helps with assembly points that gethidden by later work as well as proving the home build status.


Not sure where you’re nearest IVA testingstation is but it may be worth going along to see if you can have a chat withone of the inspectors

[b_caswell]

Re: Half built cars

more Plus extra comments from Steve Green and pos others I canadd a bit to this...

IVA 2 extra

Section...06.....Doorlatches..... The design of theRoadster door is such that you will need tosource special double latched locks but they are available from kit accessorysuppliers. The things you need are called bear claw latches (available fromCBS) in two sizes. I have fitted these very successfully to the Romero(identical doors to the roadster). Dont forget to remove the grease nipplesfrom the hinges.

12....Interiorfittings dashboard etc.... You will need to ensure cockpit edges and dash havea radius edge to prevent injury. Make sure of a 19mm radius on the bottom edge- a piece of upvc sink waste covered in vinyl works well, check switches areradiused and bezels of instruments.

14....Steering wheeland column.......You will need to have an approved type steering wheel andstudy the design of the column assembly to comply. If it comes from aproduction vehicle (like the sierra column - inc steering wheel) this is noproblem, if not then the tester will have to be convinced that teh design issafe - appropriately angled joints etc

16....Exterior projection....Theleading edges of the front wings and suspension plus the windscreen frame andother sharp edges will need to have a radius or beprotected. You can fit edgetrim as long as its glued on firmly and isnt 'temporary' (cough). Check enoughof the wheels are covered.

19 and31.... Seatbelt anchorages will need to have recognised threaded feruleswelded in to takecorrect grade of bolts and the shoulder height from the seatto the top mountwill involve either a very thin seat squab or lowering the floor(quite astraight forward procedure) to get the measurement required. Plus thelater addon seat belt tower to mount the bracket (There is a drawing for this(intechnical tips) that would involve some simple engineering).

45....... Windscreen....... will need to have the required markings Itis possible to get specialistwindscreen companies to cut a flat laminatescreen to pattern but I am not sureif they can save the marking or re-etch thenew screen to comply.( You wouldneed to approach your local vehicle glasscompany)
There is an opinionthat you can present the car with thescreen and wipers missing but as on theRoadster the frame is integral with thechassis I am not sure if they wouldaccept that. It would be a bit drastic but Isuppose you could cut off thescreen frame carefully to weld back on laterPilkingtons quoted me £130 plus vat iirc for a roadster screen with correctmarkings

[stevejgreen]

Re: Half built cars

I shared a document that may help explain the complications here or there

[djj_engineer]

Re: Half built cars

I agree with all that has been said .

When I got FMB (a Cabrio) thro the SVA test it was easier (and safer) to put front shields on the front wings so that the front suspension did not need ‘rounding’ (with an angle grinder as was suggested by the tester)

The original windscreen failed as it did not have a kite mark. The fact that it was a thicker laminate than the one that was supplied and passed ( as it did have a kite mark) did nothing to enhance my sense of humour.

They failed the outer rim of ½ of the bezel around the oil pressure gauge as this was outside the arc protected by the steering wheel. I’m afraid I attacked this bezel with a hammer!

The exterior mirrors were failed as they had nut covers that were too pointed. I had bought them as being SVA approved, they were replaced with a pair of streamlined ones.

I believe that the old SVA test was easier to get through than the IVA one but all of our cars before the Cabrio were not built to the standard demanded by the tests.
As with everything mechanical it would be possible to modify them to pass a test but the cost of doings so and the time taken to produce a compliant car would make it not worthwhile.
Derek