A Summary Report for the Log Transport Safety Council
Extract
Geelong Tilt Tests
Tilt tests were conducted using a specially constructed tilt test bed. The test bed was lifted from one end with a crane and a front end loader was used as a protection device just in case the rig overbalanced and tipped over, see figure 9.
The first series of tests were conducted on split hard wood (HW) logs. The test load weight was 12.7 tonne. In all of the tests where webbing was used to secure the load on the tilt bed, Transking Tightwinder geared hand winches with a 2 to 1 gearing ratio (16 teeth) were used to tension the lashing. The input effort with these winches was estimated to be 30 kgf when tensioning 50 mm webbing. The results are summarised in the tables below.
| Restraint Type | Pretension | Tilt Angle (degrees) |
| 5x chains | 7.6 tonne (60% of load) | 54°- No load movement |
| 4x chains | 5.6 tonne (44% of load) | 51°- No load movement |
| 3x chains | 4.3 tonne (33% of load) | 50°- No load movement |
| 2x chains | 2.9 tonne (23% of load) | 50°- No load movement |
| 2x 50 mm webbing | 1.8 tonne (14% of load) | 45°- No load movement |
| 2x 50 mm webbing | 1.2 tonne (9% of load) | 46°- No load movement |
