Engine Specifications
Here is some specifications from all of the engines that have powered Chalmers Vera Team throughout the years
| Gen I | Gen II | Gen III | Gen IV | Gen V | Gen VI | Gen VII | Gen VIIS | |
|---|---|---|---|---|---|---|---|---|
| Bore [mm] | 29 | 29 | 29 | 39 | 39 | 39 | 39 | 33 |
| Stroke [mm] | 70 | 70 | 70 | 70 | 40 | 39 | 39 | 39 |
| Displacement [cc] | 26,2 | 26,2 | 26,2 | 83,6 | 47,8 | 46,6 | 46,6 | 33,4 |
| Intake/Exhaust valve diameter [mm] | 13/12 | 13/12 | 13/12 | 13/12 | 13/13 | 13/13 | 12/12 | 13/12 |
| Compression ratio | 11:1 | 11:1 | 11:1 | 12,7:1 | 14:1 | 14:1 | 12:1 | 14:1 |
| Crank shaft | Double sided | Double sided | Double sided | Single sided | Single sided | Single sided, reworked | Single sided, reworked | Single sided, reworked |
| Injector [cc/min]@3 bar | Bosch Eco-marathon 13 cc | Honda Zoomer 46 cc | Honda Zoomer 46 cc | Honda Zoomer 46 cc | Honda Zoomer 46 cc | Honda Zoomer 46 cc/Currawong 16 cc | Honda Zoomer 46 cc | Honda Zoomer 46 cc |
| Spark plugs | Dual NGK CM-6 | Dual NGK CM-6 | Dual NGK CM-6 | Dual NGK CM-6 | Dual NGK C2H | Single NGK C2H | Single NGK C2H | Dual Denso IY24 |
| Valve train | Single, side mounted, camshaft/Dual lobes | Single, side mounted, camshaft/Dual lobes | Single, side mounted, camshaft/Dual lobes | Single, side mounted, camshaft/Dual lobes | Single, side mounted, camshaft/Dual lobes | Single, side mounted, camshaft/Dual lobes | Single, side mounted, camshaft/Dual lobes | Single, side mounted, camshaft/Dual lobes |
| Rocker arm design | Solid | Solid | Solid | Solid | Solid | Solid | Solid | Roller |
| Cam lobe specifications (Lift Intake/Exhaust [mm] – Duration Intake/Exhaust [°]) | N/A | N/A | N/A | N/A | N/A | N/A | 2,9/2,9 – 230/250 | 3,7/3,7 – 216/227 |
| Timing angle at max valve lift Intake/Exhaust [CAD] | N/A | N/A | N/A | N/A | N/A | N/A | 465/260 | 450/252 |
| ECU | Civinco SA500 | Civinco SA500 | Civinco SA500 | Civinco SA500 | Microsquirt | Katla | Katla/ Microsquirt | Microsquirt |