Crimson Racing Wiki

Oil Cooler Sandwich Plate

Subteam: PowertrainSubsystem: LubricationAssembly: Lubrication AssemblyCars: CR25, CR26I

Purpose

Alternate BOM naming for the Setrab sandwich plate adapter.

Function

See the Oil Cooler Adapter entry.

Design Process

No part-specific design process is documented. The Lubrication subsystem design process applies: 1. Set capacity and pan geometry from the packaging envelope and the CG target. CR26I: 1.95 qt pan, 3 qt system, low-profile design lowering engine CG by 1.6 cm on the earlier revision. 2. Design the baffle and trap door layout, keeping baffle clearances tight and stiffening the mounting flange to improve gasket reliability. 3. Size the oil cooler from measured heat rejection. 4. Select the oil to meet Yamaha's specification (API SP, JASO MA2) with wet-clutch-safe additives. 5. Validate on the sloshing test tracks, logging oil pressure against lateral and longitudinal acceleration. Test 1 minimum oil pressure 30.7 psi at 7,200 rpm with 1.41 g sustained for 1 s and a 2.21 g peak; test 2 minimum 31.3 psi at 6,000 rpm with a 2.02 g peak. 6. Send an oil sample for analysis after 500+ miles of track and dyno running.

Manufacturing Process

Waterjet from sheet, or laid up on a milled or 3D printed mold.

Full Material List

Setrab sandwich plate.

Reoccuring issues

None recorded. This part has no entry in Knowledge_Transfer/Issue Logging/Fault Vault.xlsx, in either Issue Log.xlsx, in CR22/Issue Tracking/Shakedown 7-15-23.xlsx, or in any design review issue list found in CrimsonStorage or Box.

Properties

Dimensions called out on the cost report drawings. These are the figures printed on the drawing, not a labelled specification; open the drawing itself for what each one refers to. Oil Cooler Sandwich Plate, Susa.stp (as drawn): 32.00, 3.20, 76.00, 7.60, 21.382.1421.382.14, 27.00, 2.70 38.00, R3.80 Oil Cooler Sandwich Plate, Susa.stp (as drawn): 30.00, 3.00, 76.00, 7.60, 21.382.1421.382.14, 27.00, 2.70 38.00, R3.80 Source: Cost report drawings: CR25/Powertrain/Design/Lubrication/3 ~ Documentation/Cost Report Drawings/Oil Cooler Sandwich Plate, Susa.stp.pdf; CR25/Powertrain/Design/Y - Cost Report Drawings/Lubrication/Oil Cooler Sandwich Plate, Susa.stp.pdf; CR26i/Powertrain - IC/Design/Lubrication/3 ~ Documentation/Cost Report Drawings/Oil Cooler Sandwich Plate, Susa.stp.pdf; CR26i/Powertrain - IC/Design/Y - Cost Report Drawings/Lubrication/Oil Cooler Sandwich Plate, Susa.stp.pdf and 2 more Quantity per car, as costed: 1

Still to document

Nothing in CrimsonStorage covers these yet.