Costing question

[markocosic]

2005 Rules, 4.3.8

"The engine is considered
to be purchased with all of the required components and systems necessary to
run. The engine costs listed below include the transmission/CVT device
regardless of whether it is integral to the engine or not. Engines that come
equipped with an integral transmission, differential, and U-jointed axles must
estimate the cost of the differential and U-joints separately. Items driven by
or beyond the general function of the engine and/or transmission must be
cost. All other items: the carburetor (or fuel injection system), the ignition
and/or electrical system (including spark plug(s), coils and wires), turbo or
supercharger if used, the intake manifold, the exhaust manifold, cooling
system (water & oil), and mufflers must be cost."

(Ignoring the first sentence going completely against the latter one for the minute!)

Am I correct in thinking if you were to manufacture a crankcase/transmission and throw a 600cc cylinder/head assy on top, you'd only be stung for the cost of the diff/chain/final sprocket and the intake/exhaust/fuelling system/ignition systems on it?

What if an electronic clutch were an integral part of the transmission - would the actuator inside the transmission get costed (its a vital/fulyl integrated part), or would it be classed as 'beyond the general function of...' and therefore costed?

Mahle/CVT people: was your engine/transmission combo costed at $750? Were the actuators neccessary to work the transmission costed separately or included?

[Andycostin]

I would consider that any part that was made, eg trans or block, would have to be costed as a manufacturing cost. Any integral part would be borderline, and i think it would be worth asking someone who judges it, but as i recall, all our gear shifting system for the car was cost completely.

Hope this helps

[Dominic Venieri]

Anyone from WWU care to comment? If I recall, when you guys ran the V8 a few years back, it costed out the same as any other high performance 600cc motor - that was one of the loopholes - what would otherwise be (or what is) a very expensive undertaking to build your own engine, didn't hurt the cost score because cost is based on size/output.

[Greg H]

It seems to me that they are encouraging us to get more creative with our engine selection and modifications keeping that cost "loophole" in mind. I don't think it's a loophole at all but rather it was intended, although I know they don't want us to get out of hand with it.

[markocosic]

That's how I read it Greg - thou shalt use an alloy bodied steel spaceframe for cost reasons, though shalt experiment with X, Y, Z using these purposefulyl designed 'loopholes'.

[Travis Garrison]

http://fsae.com/groupee_common/emoticons/icon_smile.gif

I'm pretty sure some of the older WWU guys read the forums now so please correct me if I screw up...but Dominic has the right idea...the WWU V8 actually cost less than an F4I becuase it was a 554 cc engine...so 554 * $/cc ....

markocosic, the alloy bodied steel spaceframe does not neccisarily come out to be cheaper...there's ALOT of labor in a spaceframe...and the designs most teams tend to come up don't exactly help the labor issue...

You want cheap, think CNC waterjet cut patterns for an aluminum monocoque http://fsae.com/groupee_common/emoticons/icon_wink.gif

-Travis Garrison
UW FSAE
WWU Alum

[markocosic]

If its cheap enough for Robin Hood it /must/ be cheap... http://fsae.com/groupee_common/emoticons/icon_wink.gif

http://www.robinhoodengineering.co.uk/images/2B_Chassis.jpg

http://www.robinhoodengineering.co.uk/images/LW6B.jpg

(UK people will get the joke, but for our international readers RH engineering are known for being the cheapest, nastiest and least SVA complaint kit cars known to man)

[theloyal]

Hi, we are first year team and have a plan to participate in FSAE Australia this year.
i want to ask that cost table for materials, tollings and fasteners that are posted in the website were originally posted at 28 November 2010 and now prices of some parts have increased. like we want to purchase Damper that are given in table have 125$ unit price whereas we found that damper of 175$. Then we are surely going to loose marks in cost, so what should i do now in this scenario..??
Regards

[Bemo]

I just answered that question in another thread http://fsae.com/groupee_common/emoticons/icon_biggrin.gif

Please don't post the same thing at multiple places here. If you are not sure, if your question fits a topic, just create a new one.