Hi everyone,
I just noticed this topic today, and noticed someone else has steered you to my posts and website, great news.
What I have not previously said about 'Durien' is that it 'glues' eceptionally well, and is very easy to cut and sands well. It has a particular smell when freshly cut that some find unlikable apparently, it was fine for me.
Use only the higher density 'Durien' ( grey / brown colour with pinkish / brown middle ) for your masts and booms etc. it should be similar to or greater in strength to WRC.
The lower densities ( mottled orange outside with white 'Balsa Wood' like interior ) are great for using in any places where glued directly to your plywood, and have strength comparable to pine. If you use too much of this in your PDRacer you might incur a weight penalty at competitions, for being too light.
This should put an end to all your doubts about 'Durian' at least, great to have someone else from Perth thinking about a PDRacer, I was wondering if, when I finish mine, I would have anyone to race.