Originally Posted by
nulrich
Let's assume the basic chassis and bodywork for FB and FC cars are the same including wings, diffuser, etc.
fair
Then the difference really comes down to the drivetrain from motor to the output of the gearbox/differential. Here's what I'm hearing from FB competitors for costs:
Motor/clutch/gearbox $2k Yes, I have $1800 in the engine in my car.
Differential, chain drive, etc $1k (?) Maybe even a bit low.
Geartronics shifter $7k I think that the real world cost is less, regardless of the internet "information"
Dry sump system $2k (?) Perhaps, but plenty of cars are showing good reliability and performance without a dry sump.
ECU (MoTeC M400) $4k Nope. Stock ECU class. I don't think that any of the front running cars were even using one of the "piggyback" map modifiers (power commander, etc).
That's $16k without any sort of dyno development or tuning. To be competitive I'm assuming you'd have to spend significant time/money to get the most out of your engine.
I think that 8-9K will do the job, even with the shifter.
The bike mfgs seem to be extracting the potential from their engines. We run them is stock, unmodified form and I'm yet to see anyone make more power than using a stock ecu. I'm not saying it's not possible, just I haven't seen it and I don't think that anything other than a stock ecu will be needed to be competitive with the current rules package
An FC Zetec drivetrain (motor w/ ECU, intake system, gearbox) is $18k new and you can't do any development on it, so you're done. (Technically, I guess you could do development, but the gains are marginal and the engines are sealed in the pro series.)
How many people at the pointy end of the F2000 series send that LD200 gearbox out to be "blueprinted" before it even turns a lap? How many gearsets do you need to purchase?
From what I've seen, you still need structure to support the motor and differential, and it performs the same basic function as the bell housing in a FC, so there should be no difference in price assuming both are well designed.
My opinion is that the FC bellhousing is a slightly more complicated piece. The clutch has to be in there, it locates the starter. You have to mount up to the LD200, have an input shaft running down the middle of the thing. I'll fundamentally agree though that the costs are somewhat similar.
For equal quality components I think that an FB Citation would cost $10K - $12K less than a FC Citation Zetec.
The aero rules are much more open in FB than FC, so at some point being competitive is going to cost a lot more in FB.
I see that there will be development costs along the way, but once the aero package is developed, the costs should be similar. Maybe FB will have more bodywork square inches and thus cost a bit more.
Where am I off? (Honest question.)
Honest answers.
Nathan