A Racing Bow Sprint

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Capt'n Bob

For this racing year the GYA,(Gulf Yachitinga Association) for the north central Gulf OF Mexico has allowed the non-sprint boats to install a bow sprint for racing - provided they (the GYA) is provided a copy of the construction drawings for review and thus allow them to adjust the GYA PHRF for that boat. My question is - for the HL 35 how long should the sprint be out from the bow tip ??? I amn sure it has to do with the length of the luff of the A-Sym intended for use. But there must be some flexabllity built in to allow for the use of a new A-Sym with a different luff length. It was said in this list a few weeks ago that the A-sym intended should be as big a kite as possible. Thus the Question is - what is possible ??? A friend suggested that a visit to a J109 and measure that sprint. Any suggestions and/or guidance would be appreciated RD
 
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Bill O'Donovan

Try this

I've designed an eight-foot bowsprit that sits four feet from the prow backward. Anything longer than that puts too much length beyond the bow. I've sent this all over the country for years and have it on my second Hunter, a 320. Here’s an easy-to-make bowsprit, seats in the anchor locker. This will throw the spin ahead of the main, less blanketing. Tack line and 2 sheets permanently deployed for quick setup. (Note that the link here has 2 pages of pix and directions.) Typo correction: Eyelet should be 3/8 inch.
 
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Capt'n Bob

More Sprint Questions

It appears from the replys that the HL35 sprint length of choice is 48 inches. Alan, do you have a photo of the collar attachment that keeps your sprint in line in the area of the bow seat ?? It also appears that your sprint is angled up somewhat. Did you ever consider using the anchor schackle as a point of support for the sprint ?? On my HL 35 this is a pretty strong assembly. RD
 

Alan

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Jun 2, 2004
4,174
Hunter 35.5 LI, NY
More sprit.....

I put a good deal of time into the design and construction of my sprit. It was built with an eye toward racing and therefore maximum extension. I used the numbers from a J105(34') as a guide. Anything smaller would be acceptable but less efficient. The support collar was the most difficult part. I wanted the sprit to both retract and articulate to the toe rail in the stored position. This necessitated a support that would rotate through approx 30 degrees. I also needed to allow the use of the anchor roller. Therefore the support had to carry the sprit above the highest point of the roller. The sprit is a 4" pole with a tip load rating of 2500# unsupported. I added an additional safety factor of putting a turning block for the tack line rated at 1500# so this would be the fail safe point. The sprit does have a slight rise from the horizontal toward the tip. This has no effect on the flying of the sail. I do not have any close-ups of the support but I will take some next trip to the boat. I'll post them here if you would like.
 

Alan

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Jun 2, 2004
4,174
Hunter 35.5 LI, NY
Re: sprit pole

I just remembered that Selden is now selling a sprit pole kit that you can buy and add to almost any boat. http://seldenmast.com/frameset.cfm?id=5581
 
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Capt'n Bob

Seleden Info

Alan, Many thanks for the info. Have sent them an email requesting a price quote. Their pole collars are interesting. RD
 
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