All available race results J.G. Stack
| Date | Race | Rank |
| 03/10 | Waimate - Christchurch | 9 |
Rider information for 1931
| Rank | 1798 |
| Score | 0 |
| Name | J.G. STACK |
| Country | New Zealand |
| Team | Individual |
| Date | Race | Rank |
| 03/10 | Waimate - Christchurch | 9 |
| Rank | 1798 |
| Score | 0 |
| Name | J.G. STACK |
| Country | New Zealand |
| Team | Individual |