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Ben Lipman Goo Roo SA Soarer TT manual, plus TT track car, plus a spare shell
Posts: 3991 Reg: 04-2006
Rating: N/A Votes: 0
Friday, December 18, 2015 - 09:30 pm, by: Ben Lipman(Ben12a)
I saw the first and third, but totally missed the one in the middle. Well spotted.
I want to go back next year with more power, more revs, and revised aero. I would love to see 250kph.
I am currently working on a new rear diffuser. I am building the mould out of MDF. The design exploits the rules as much as possible: beginning at the axle line and running just passed the factory bumper location. In order to run a 1200mm wide diffuser, I have had to neck it in at the front. I did this using a NACA duct design spreadsheet. I am also incorporating generous radii inside the diffuser walls, and have pre-planned fins or vanes in the design, so their mounting points will be recessed in the diffuser. This has the added benefit of increasing the cross section on the diffuser roof, increasing rigidity for no weight penalty.
Pics to follow when I recover the camera from the sawdust...
