fangman Posted May 26, 2007 Report Share Posted May 26, 2007 Having recently bouight a maricat 4.3 I am interested in modifying mast rake .I have read all the forum advise /suggestions,however but I would like more detail eg 1.How much can I grind from mast aluminium base before I compromise strenghth and integrity. 2."Lengthing mast pin by adding 5 cent piece" ,Is this just acase of taking pin base off mast and adding the 5 cent piece Link to comment Share on other sites More sharing options...
Pointed Reply Posted May 26, 2007 Report Share Posted May 26, 2007 In my opinion you do neither of these. Drill out the rivets that hold the mast base in place. Unbolt the pin. Put a stainless steel nut on the bolt between the base and the tip. Rerivet in place. This will lengthen the pin and allow more mast rack without butchering the mast step. Link to comment Share on other sites More sharing options...
humungus2 Posted May 26, 2007 Report Share Posted May 26, 2007 Thats a good way of doing it if you have a bolt in the base. I havn't seen a bolt in the base as standerd but I would sugest going to the trouble removing the pin and replacing it with a cup head bolt would be the ideal way. The 5c if you chose to go this way is fine but it will only last 2-3 outings before needing replacment. I used a punch to indent/concave the 5c first. Before you erect the mast, simly put the 5c in where the mast would sit first then put up your mast as normal. Grinding the base. At this stage I have not heard of a mast base colapsing after being ground. Link to comment Share on other sites More sharing options...
fangman Posted May 27, 2007 Author Report Share Posted May 27, 2007 Thank you for your prompt replies .More questions 1- How much should the pin/bolt be lenghthed to achieve clearance of mast base alloy block , 2- What width S/S bolt - Link to comment Share on other sites More sharing options...
Pointed Reply Posted May 27, 2007 Report Share Posted May 27, 2007 I have only taken the mast step off once, as the pin was loose. If I remember it is a threaded bolt with the ss pin welded on the end. The spacer nut on mine is 16mm diameter (same as the pin) and 8mm long. Mine was like that when I bought the boat and has probably been there for 20 yrs. My mast step (on the crossbeam) is intact but the section of the mast base (rear of the fitting) which allows the mast to rotate is skinny. This allows the mast to be racked but also allows a bit more mast rotation. Pointed Reply races with minimum weight crew so needs the mast rotation to depower the rig in strong wind. Link to comment Share on other sites More sharing options...
fangman Posted May 27, 2007 Author Report Share Posted May 27, 2007 Cheer's - Pointed Reply, Humungus 2,much appreciate information Link to comment Share on other sites More sharing options...
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