Are My Arches Too Small?
 

last fabrication job i had to do on the car is making the front wingstays. did them and put an arch on top and the result is below.

personally i think they are too small to pass iva what do you guys think?

looks like you,ve got them in the correct for/aft position ok, so do you mean the width coverage?
what size tyres are you using? are they 195x15x6j ? if so then the front arch is designed to that spec of tyre .

also how close is the wing stay bar to the inside of the tyre? should be about 10mm from the tyre .

cheers
andy

got about 10-15mm between the arch and tyre they just seem a bit on the small side

tyres are 195/50/15 and the wheels are 6.5inch wide

they are wide enough i just dont think they cover enough of the wheel surface front to back

when i last spoke to Fabby he said the front cycle wings were made to within SVA & IVA spec so should pass as long as the for/aft angle is correct, i believe the IVA has a special measuring gizmo to ensure the correct portion of the tyre area is covered, i read it in "Complete Kit Car" when they did an article of a Cobra going thru the new IVA test & it showed a pic of the gizmo for the measurement,
If it helps, i know Spud,s car passed SVA with the same cyle wings as yours & mine for that matter :D :cool:

andy

ps, have a look on the Saturn web site at Spuds car

found this in the iva manual

1.
The vehicle must be fitted with wheel guards
2.
The wheel guard must extend at least 30 degrees from the centre of the wheel to the front (figure 1)
3.
The wheel guard must extend at least 50 degrees from the centre of the wheel to the rear (figure 1)
4.
The wheel guard must cover the full breadth of the tyre throughout the required dimensions (see note 2 & figure 1)
5.
The rear of the wheel guard must not terminate above a horizontal plane of 150mm above the wheel centre.

will have a measure up tomorrow

so looking at your photo it looks about spot on as per those directives.

andy

appears so. they just looked small compared to ones like you see on mnr's etc

I must be honest, when I first saw them I thought they looked a bit short.
It may pass IVA but you will be wearing anything thrown up by the tyre..:eek:

Mine are a lot longer, and I'm fitting bike mudflaps to stop things being thrown up.

David

Look about right to me but then the SVA/IVA is like the MOT where the tester on the day is the deciding factor.:confused: Some folk get thru some don't using same parts but at different test centres, happens with exhausts and all manor of weird stuff.

Hi Mark
Everyone got me really worried now why should they be too short, surely the standard ones are OK for IVA . What is the length of the stanadard ones?

Cheers