[MHml] Catamarans (seagull strikers)

[Chad Greene]

On my Sunburner 28 the seagull striker also angles parallel to the 
forestay, but it presents a problem on my boat. I have roller furling, 
and the drum has to be "above" the striker, placing it perhaps 18 to 22 
inches above the beam. This necessitates long "homemade" tangs between 
the furler drum and beam attachment point, and worse than that, the 
furler control line has to cross the tramp at knee height -- a nice 
tripping hazard just where you don't need it.

I have considered moving the striker to vertical, replacing it with an 
"A" (it's a straight tube now), but have wondered how much weaker it 
would make the beam. From the comments below, It may be best to leave it 
alone.
Chad

Roy Mills wrote:

>At 04:28 PM 9/7/06, you wrote:
>  
>
>>So, riddle me this, o learned one. Why is a seagul striker typically
>>aligned vertically, and not in line with the force it is resisting,
>>which is parallel with the forestay?
>>    
>>
>
>         I did not know that Dave, on my boat the seagull striker is 
>angled back essentially parallel to the forestay, and so it is on 
>Reidar's boat and on Guy's boat, so I thought it would be on all 
>cats. The only residual force for the crossbeam to fight is the 
>couple between the seagull striker and the forestay. Now you tell me 
>that this is not the case typically. I'm sure it will be so angled on 
>Malcolm Tennant's boats, his drawings of the seagull striker set up 
>on the T 10 is quite explicit in that regard.
>
>  
>
>> A simple answer might be that the
>>typical crossbeam is elliptical, with sufficient bending resistance in
>>a fore-aft direction, but really, wouldn't it make more sense to align
>>the striker with the force itself?
>>    
>>
>
>         That was certainly the way that Reidar, Guy and I felt about 
>it. Please note that I said upwards, but not vertically upwards.
>
>
>  
>
>>Just wondering...
>>
>>Dave
>>    
>>
>
>         Me too
>                 Roy
>
>
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