claymore wrote:Absolutely Donald - couldn't agree more, although we did upgrade our Wee Bruce to Big Bruce
So why / how does a Bruce work ? Genuine question - not a - I use a Bruce myself.
As I understand it - a Spade 'grabs' a big dollop of muck - the muck resists the pressure to be displaced by dissapating the forces outwards in a triangle. What happens as the load is increased? does it suddenly jump out with just the lump of muck in front of it adding slightly to it's weight or does it dig down deeper?
If you look at the profile which is resisting drag on a Bruce, then it couldn't be slimmer. Does it move forward and down during the initial set until the pressure of the muck around it creates enough friction to resist further movement. What happens as the load is increased? does it move through the muck - providing a constant resistance due to friction? When weighing anchor, I'm always happy to see the last few metres of chain covered in mud - is the mud because it's been lying on the surface because I've let out suffficient scope or does the Bruce drag the chain down below the surface - increasing the friction?
The water in LL isn't clear enough to see what's happening and although the Dufour in Greece had a Bruce - I didn't have a mask so couldn't see it there either.