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I went down to a local insulation business and
polyurethane costs $40.54 for 75mm x 1200mm x 600mm.
Polystyrene costs $19.80 per 100mm x 1200mm x 600mm.
Polyurethane was recommended because although the upfront costs are higher and the material is not very nice to work with the polyurethane is not destroyed by poly resins. Exoxy resins being more expensive.
I also went down to the local fiberglass supplier and although I got some advice I did not get a unit price per square meter that I wanted. I have found an ebay store that offers products at reasonable prices.
Considering that 10,000km of petrol costs about $300 the budget will not be very high. With such a low budget it is going to be difficult to figure this out.
The biggest problems to solve will me.
1) Designing an optimal fairing.
2) Transferring that design to a fiberglass mold material.
3) Once surface area is calculated and supplies ordered making the fiberglass fairing should not be impossible.
4) Sanding and painting without it costing $1000.
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