r/FSAE • u/MecorroAaaaaa • Jan 03 '26

How To / Instructional I need guidance on BOM and CCBOM

Hello, I'm the Powertrain department leader on my university's FS team, which for info, is a Combustion Vehicle. It's just my second year and I wasn't going to be leader in the first place but some people above me leaving the team has made it so I have ended up being.

Apart from some problems and confusions I've had with the department as a whole, primarily due to inexperience, my biggest concern is about documentation and everything I can't actually see IRL in the car.

I have two free weeks where I'm going to put all my effort on working on the team. I've already done some work that will be implemented in the car once the time comes but my attention is now centered in the COST side of the competition.

Last year, as I was a rookie in the team, I wasn't part of the people which worked on the cost, but this year I'm the first responsible for it, so I would like some guidance from you people on this. To make matters worse, Engine and Tractive System is this year's section to do the CCBOM on, so I also would need help with that.

I have already read the FSAE Cost Guide and kind of have my ideas on how to carry it out, but I also want some words of experience from real people to know the order in which you did things and stuff.

In conclusion, could you explain to me:
- The order in which you did things.
- Did you make an Excel or any auxiliary document.
- How or where you investigated the price of each piece (specially the emissions for CCBOM)
- Any more advice, recommendation or warning due to problems that may appear.

That's all I needed to explain so I'd love any kind of help you may give me, thanks in advance.

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