Mast Height?

  • 31 Oct 2011 19:27
    Reply # 738528 on 738289
    Keith Bedwell wrote:

    I`ll keep looking and see what I can come up with for an option. I was favoring a one piece mast, but maybe a two piece would be more practical and easier to locate. I can live with the price tag, just wnated to make sure I wasn`t missing something. Of course seeing that I do not even hace a boat yet this is all an academic exercise for the moment.

    What about weight? I`m finding these mast are weighing appox 150-200 lbs is that too much?

    Gotta try to decide if I want to try and make my own sails. So many things to consider.

     

    The hybrid method that Annie used is a very pragmatic and practical way to get a mast, when a one piece alloy mast can't be found, or afforded; and a one piece wood mast is too big an undertaking. It's relatively easy to source a shorter length of 6in x 3/16in tube, and to make a wooden topmast to fit into it.

    That weight is entirely acceptable. A heavy mast slows the roll down, a light mast gives better boat stiffness for sail carrying. Comfort or speed, take your pick.

    So few sailmakers know anything about making junk sails, that it's generally less problematic to make your own than to try to instruct a "professional" (and less expensive). Don't shy away from sailmaking - it's not hard, it's just one more trade that you have to gain a few skills in, on top of all the others you need to put a boat together.  
  • 31 Oct 2011 14:24
    Reply # 738289 on 737662
    Deleted user

    I`ll keep looking and see what I can come up with for an option. I was favoring a one piece mast, but maybe a two piece would be more practical and easier to locate. I can live with the price tag, just wnated to make sure I wasn`t missing something. Of course seeing that I do not even hace a boat yet this is all an academic exercise for the moment.

    What about weight? I`m finding these mast are weighing appox 150-200 lbs is that too much?

    Gotta try to decide if I want to try and make my own sails. So many things to consider.

     

    Last modified: 31 Oct 2011 15:25 | Deleted user
  • 31 Oct 2011 07:52
    Reply # 738029 on 737662
    I recently made a hybrid mast for my Raven 26.  This consisted of a 6m (20ft) tube of 152.4mm diameter (6") with a 5mm (0.2") wall thickness, with a 4 m (13ft), hollow topmast of Oregon, which I made to fit.  The tube cost me $NZ617 - about US775.  I was given the Oregon, but had to pay for machining, glue, glass, paint etc.  The concept is explained in PJR.  The sail area is about 320 sq ft
  • 31 Oct 2011 00:32
    Reply # 737705 on 737662
    Deleted user

    Just trying to ballpark what I should be looking for as I try yo find a mast. I`m finding flagpoles but most are 5 in diameter tapering to 3 in. The search continues...

    What other features should I look for in a mast. The 30ft x 6in diameter mast are running about $1300 with delivery. Is this what I should expect to pay?

     Anyone made a mast purchase recently? 

    Last modified: 31 Oct 2011 01:23 | Deleted user
  • 30 Oct 2011 23:57
    Reply # 737692 on 737662
    To get an accurate mast length, it will be necessary to design the sail, deciding on its area and aspect ratio, but as a rough guide, its length will be less than that of a bermudan mast, above deck, and it will certainly be possible to design a rig that uses a 35 ft tube. The diameter should be 6" or 7".
  • 30 Oct 2011 21:46
    Message # 737662
    Deleted user
    How is the height of the mast detemined? For exmple Albin Vega 27 with its bermuda rig the mast is around 30ft. As I read thru PJR I understand that the bury should be at least 1/10 of mast height. So when doing a conversion would I want to use the same mast height mast or shorter/longer? I have found a source for flagpoles up to 35ft aluminum one piece tapered construction. Just trying to get a idea of what to expect for cost etc...
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