winching and flat battery

Go to the this site. What it does'nt tell you about batteries is'nt worth knowing. http://www.uuhome.de/william.darden/carfaq.htm#4

2ndLow,
Steps to winching,
1. Increase rpm of motor to about 1200rpm, use hand throttle if fitted
2. Use a snatch block in all winiching operations
3. Only use the winch in short bursts, 10-15 seconds at a time and a equal amount of time for the battery to recharge
When a winch is rated, it is rated when the cable is wound off the drum except for 6 turns of cable left on the drum. The drum is at it's smallest diameter and therefore at it's maximum mechanical advantage. Running the cable through a snatch block will use more cable,which means the drum will be as small as possible and will also mean that half the effort will be required by the winch. Because the winch is not working as hard, the draw on the battery will also be half.
The battery should not go flat while winching if these rules are applied. If the battery should go flat, the winch would stop turning and get very hot.
PS A diesel motor does not require a battery to run, once the motor is running it requires no electric power unlike petrol motors that require power for a spark.

Wayne

Wayne, what about the solenoid on the injector pump of many motors???