All available race results Sydney Arnst
| Date | Race | Rank |
| 05/10 | Timaru - Christchurch | 6 |
Rider information for 1929
| Rank | 1777 |
| Score | 0 |
| Name | Sydney ARNST |
| Country | New Zealand |
| Team | Individual |
No results available in season 1931.
Rider information for 1931
| Rank | 1789 |
| Score | 0 |
| Name | Sydney ARNST |
| Country | New Zealand |
| Team | Individual |