Quote:
Originally Posted by Deezler
Cd of 0.45? That seems a bit on the high side; I used 0.35 in my calculations but suspected it was a little optimistic. Do you have a source? I couldn't find any data on this.
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Mayfield has a similar year Quantum (wagon) at .4, and those are longer/more streamlined than the short/fat box that is a bunny, so .45 seems reasonable.
Owners report .4-.48, with .42 and .48 supposedly being from published books.
Quote:
Originally Posted by Deezler
As for weight, this site lists 1775 lbs dry. Perhaps not the best source.
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That sounds like the dry weight for a early bunny.
Car and Driver has an 83 GTI at 2100lbs wet. Toss in a 150lb driver and we're at ~2250lbs, and the extra 50-100lbs from the TDI and associated will probably put it over 2300lbs, depending on where they start of course. Add ~25-50lbs for a four door, maybe drop some w/o AC, etc... It really depends, but IME they'll probably end up around ~2300lbs w/ driver unless they do some weight reduction.
Quote:
Originally Posted by Deezler
Should be considerably less than 2300 lbs even with a driver and fuel. I would expect these guys to rip out most of the interior anyway.
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They could, but I don't think there would be room in their budget. They could tear everything out, but in that case it wouldn't be very bearable. Trust me on that one.
Quote:
Originally Posted by Deezler
Anyway, I listed all my #'s used, you can see from my plot that this site is calculating just 13.7 HP to maintain 60 mph, with all losses factored in.
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I've done the same, with sources. Since I've owned a couple I've been up and down the interwebs, and a TDI in a stock VW with a ~150lb driver should come in at ~2300lbs, plus the horrible drag coefficient, will need ~18-20hp at the flywheel, depending on how efficient the driveline is, something I actually haven't seen any figures on.
