NorCalAthlete
O_o
Someone remind me of that shortcut for mechanical advantage multipliers + pulleys - you count the number of lines and that's your multiplier? Or it doubles for each line?
Example: Winch > pulley on stuck vehicle > anchor back at winch vehicle is a 2x advantage (minus a few points for friction or whatever but 2x is close enough for estimating).
What's the MA for winch > pulley on stuck vehicle > pulley on winch vehicle > anchor on stuck vehicle?
Or subsequently, winch > pulley on stuck vehicle > pulley on winch vehicle > pulley on stuck vehicle > anchor back on winch vehicle? You'd have 4 line count (2 loops) on the stuck vehicle and 4 on the winch vehicle but only 1 loop around the pulley at that end....argh I haven't done the calculations in so long.
edit - here we go. It'd be 4x advantage :
[youtube]6GuldysCVjI[/youtube]
[youtube]M2w3NZzPwOM[/youtube]
[youtube]GXk4xCPkeco[/youtube]
Example: Winch > pulley on stuck vehicle > anchor back at winch vehicle is a 2x advantage (minus a few points for friction or whatever but 2x is close enough for estimating).
What's the MA for winch > pulley on stuck vehicle > pulley on winch vehicle > anchor on stuck vehicle?
Or subsequently, winch > pulley on stuck vehicle > pulley on winch vehicle > pulley on stuck vehicle > anchor back on winch vehicle? You'd have 4 line count (2 loops) on the stuck vehicle and 4 on the winch vehicle but only 1 loop around the pulley at that end....argh I haven't done the calculations in so long.
edit - here we go. It'd be 4x advantage :
[youtube]6GuldysCVjI[/youtube]
[youtube]M2w3NZzPwOM[/youtube]
[youtube]GXk4xCPkeco[/youtube]
Last edited:
