gunnerasch wrote:... Im at a bit of a quandry about the spreaders. I didnt have any 1/2" aluminum rod stock, so I made (2) of them out of 3/8 bar stock, 1 1/8 wide. According to the D&R webside..they are supposed to be 21 1/4" long...and here is my problem...are they fixed to the mast..or do they swing a bit in the spreader attachments?
Ive seen boats go both ways. I can pull them out away from the mast 1/2" and if I drill the holes..they will swing forwards. If I keep the (tapered) butts against the mast..and drill the holes..they are fixed in place. What are they supposed to do?
The spreaders are supposed to be hollow. This high up on the mast, you really don't want any unnecessary weight (think long lever). Any extra pound up there will need several pounds of crew weight on the rail to balance it.
The spreaders on the DS are supposed to point slightly back, when in the correct position. This is necessary, because the DS does not have a back stay (and you will find that the chainplates are mounted aft of the mast).
Now, my spreaders are mounted in the old-style mounts, where they can swivel fore and aft, but there are other types of mounts where that motion is restricted (I don't have one of those, so I'm not 100% positive, but from the pictures I had formed the impression that these prevent the spreaders from swinging forward past a given point).
My spreader mounts allow a bit of movement up and down, so I can set my spreader tips so that they bisect the shallow angle formed by the shroud going over them (that amounts to the spreaders pointing up a few degrees). In that position, the entire force on the spreaders is lined up with their length (that is, compression only). The "high-strength" mounting brackets seem to force the spreaders to be horizontal, but they are strong enough to withstand whatever bending forces get transmitted based on the small misalignment of the spreaders from their optimal elevation.
In principle, I can see no reason why you couldn't mount fixed spreaders - as long as they are angled back at the correct angle. Allowing the spreaders to swing (even a bit) could be advantageous to compensate for some movement in the mast, as a gust hits, for example, but I can't tell you how necessary that would be. (You might look at pictures of spreader mounts to give you some idea). I store my mast with the sail-channel up (so the ring and jib/spinnaker blocks don't stick up). With the spreaders swinging, the spreaders hang down in either position and aren't in the way of a tarp.