S4.13 Make Versus Buy

Every part on an individual car can be classified as “made” or “bought”. This designation does not

necessarily refer to whether a team actually purchased or fabricated a part but is a reflection of how the part must be cost from the Cost Tables.

a. Made (or manufactured) parts must be cost as if the company manufacturing the vehicle was

going to make the part internally. That is by purchasing raw materials and processing them into a finished product.

b. Bought parts must be cost as if the company manufacturing the vehicle was going to outsource

the fabrication of that part. These parts would be received by the vehicle manufacturer in a relatively finished state (see the particular table entry comments field for specific information).

S4.13.1 The Cost Tables have been constructed as a tradeoff between complexity for the organizers and fairness for the teams. The make versus buy designation enables certain parts to be simplified to a relatively few number of entries. For example some teams may purchase axles but the majority of teams manufacture them. Axles are designated “make” parts so teams that purchase axles must cost them as if they had made them starting with the raw materials, in this case probably steel tubing. Made parts can be distinguished because they do not appear explicitly in the Cost Tables or appear with a “cost as made” option.

S4.13.2 If a team genuinely makes a part listed on the table as a bought part they may alternatively cost it as a made part if and only if a place holder entry is listed in the tables enabling them to do so. For example, in the category of dampers a “student built” entry is included. This line item must be included in the BOM (it has zero cost). Then they must proceed to cost the damper they actually designed and built.

S4.13.3 A table summary of options is given below:

How Team Actually Acquired the Part

How Table Lists Part Team Made Team Bought

Table Lists Part as "Made", or Part is not Listed in the Tables

Cost as "Made" Cost as "Made"

Table Lists Part as

"Bought"

Team made option NOT in table cost as "Bought". If team made option in table team can choose either "Bought" or "Made"

Cost as "Bought"

S4.13.4 For example a snap ring does not have a “team made” entry in the Cost Tables. A team who made their own would still have to use the table cost based on diameter, even if they could cost it less expensively by buying steel and processing it.

S4.13.5 Any part which is normally purchased that is optionally shown as a made part must have supporting documentation submitted to prove team manufacture. This might include engineering drawings, pictures of machining, etc. Teams found costing bought parts as made parts will be penalized appropriately.

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