Quote:
Originally Posted by freebeard
Acceptable 'eyebrow heights' -- That sounds bizarre, an administrative rule that requires a lookup table.  Are pre-70 vehicles exempt? Any rule about covering the tread width? Are fender skirts (front and/or back) disallowed? Re-arching the fender?
suspension travel -- dropped spindles OK?
Cutting/heating/lowering blocks -- This sounds commononsensical. What does you tire sidewall measure [at]? |
Yeah, welcome to Australia, the Land Of Needlessly Complex And Obtuse Regulation Of Every **** Thing... I bet some bureaucrat just went through manufacturer "eyebrow height" specs, subtracted 20mm to allow for a bit of normal wear-n-tear spring sag, and went home that night chortling into his neckbeard
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Pre-1970s vehicles only have to comply with the 100mm minimum & suspension travel reduced by no more than 1/3. Dropped spindles are fine as long as the other requirements are met. Tread width must be fully covered between specified angles etc. As for re-arching the fender to allow for more drop with the same 'eyebrow height', goodness only knows. I don't see anything preventing fender skirts though - minor bodywork modifications aren't really restricted as long as there are no sharp projections (with allowance for OE mascots and pre-1965 car designs) - the above rules are to do with lowering.
I'm currently running 195/50 R15 (radius 288mm, sidewall 97.5mm) but next set of tires will be 195/55 R15 (radius 297.75mm, sidewall 107.25mm), which is still within the allowable deviation from placard (+/- 15mm diameter), but will give me *slightly* taller gears and bring my speedo closer to true
(it reads a bit under right now - within legal limits, but legal limits is 10%, so that's not saying much).
Quote:
Originally Posted by freebeard
While I like the shiny metal grille block/airdam on Bombshell Betty, there is a thread on an Aerodynamic Bumper that has currently dropped to the bottom of page 2 in this forum. He takes cooling air from in front of the wheelwells and it seems to be a good strategy. |
Yeah, I took a look at that - long nose leaves plenty of room for an effective diffuser to slow down the intake air for the radiator, too. Having extra fender in front of the wheels makes sense too, though I'm not sure it necessarily follows that that's where cooling intakes should go.