cheapracer wrote:
Grintch wrote:
Around Talladega Grand Prix Raceway (SCCA TTs):
Locost 7 (turbo) 1:02.0 (2011)
Caterham R300 1:05.3 (2013)
Ar-i-el At-om 1:05.9 (2014)
Locost 7 1:06.4 (2007 - before new curbing, track is likely faster now, I am 1.5 sec faster now in my SRF vs 2009)
Lotus 7 series 4 1:07.9 (2014)
Westfield Megabusa 1:10.3 (2014, first time at this track)
For that to have any meaning we would need the specs on the Locost.
Might have been a $50K build (relative to cost of comparable new components being used and labour involved).
Define good time? Lap record in a Spec Racer Ford is 1:09.0, Formula Ford 1:03.5. The 1:06 I ran in the Locost in 2007 put me mid pack with the Formula Fords (and yes, I was in their run group).
Both Locosts were CMC chasis. The turbo Miata based (see revised post above), one Rx-7 based (with rather crappy standard CMC suspension geometry).
My power estimates:
Locost 7 turbo - 250? (1.8L Miata turbo - Heikkie Rinta-Koski if you remember him and his car)
At-om - 230 (K24? - he was running the At-om wing package but I didn't see a Supercharger)
Caterham 300R - 200 (Zetec or Duratec)
Westfield Megabusa - 190 (Hayabusa)
Locost 7 - 180 (13B rotary)
Lotus 7 series 4 - 150 (kent engine, muti carb)
The At-om was running a full size windscreen (none of the 7's were) and started out on "street" BFG Rivals. But he shaved a lot of time the second day, maybe because he switched to R coumpounds.