ccscott49
Active member
Hokey dokey peeps! What's the length of a spinny pole? "J" measurement, beam+, or what? I assume there is a given length?
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Spinny poles.
- Thread starter ccscott49
- Start date
bedouin
Well-known member
Usually spinnaker pole length = J
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ccscott49
Active member
Good, I did make em right!
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Twister_Ken
Well-known member
SPL=J only matters if you want to be rated for racing and don't want to incur a penalty. But if you want an efficient pole length that suits boat, rig and sail, just go for what seems best (as long as you can still stow it!)
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D
Deleted member 478
Guest
But Ken, if we try your approach, surely we start with a pole that is too long and then trim it down until we realise that the ideal length was the length we had just prior to the last trimming.
... no wonder boating is a little short of being a perfect sport.
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... no wonder boating is a little short of being a perfect sport.
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ccscott49
Active member
Dont want rating, but when I designed my new rig, I did it on esthetic grounds, basically what looks right often is, in engineering anyway, so I made the poles that length, just seemed right. The rig is a little short, still but she's a motor sailer and she'll do nicely. All thios, is because I'm planning some downwind sails and will iuse my twin poles, with two yankees on my twin groove furler, (a la "Blaster") probably as a twissle type rig up, or on the front of the mast. Just trying to get all my ducksin a row.
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Bejasus
New member
Eh????
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Twister_Ken
Well-known member
On increasing the length of your pole.
A good reason for having a longer pole is that when shy reaching it puts the spi luff well beyond the forestay, giving the option in lighter airs to sail with both the kite and the genoa. Rating length poles mean that the genoa interferes with the spi if it left up/unfurled.
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A good reason for having a longer pole is that when shy reaching it puts the spi luff well beyond the forestay, giving the option in lighter airs to sail with both the kite and the genoa. Rating length poles mean that the genoa interferes with the spi if it left up/unfurled.
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MADFISH
New member
Re: On increasing the length of your pole.
You have to be careful if you carry a long pole on a reach as the compression loads caused by the foreguy (downhaul) get scary.
Spinnakers are designed and cut around the J measurement of the boat so best stick with it.
(In case of confusion to anyone reading, J = stemhead to base of mast measurement).
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You have to be careful if you carry a long pole on a reach as the compression loads caused by the foreguy (downhaul) get scary.
Spinnakers are designed and cut around the J measurement of the boat so best stick with it.
(In case of confusion to anyone reading, J = stemhead to base of mast measurement).
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Cutter
Active member
Re: On increasing the length of your pole.
I inherited a pole with a bend in it and now have gone on to terminally bend and snap it so I now need to replace it. Its an 8mm od 3m pole with step down snaps for use as a cruising chute. Suggestions as to where to go for replacements welcomed. ?better to buy a length of aluminium tube and drill or buy a new pole complete.
Importing a replacement pole from Germany (its for the Dehler) seems an expensive way of doing this.
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I inherited a pole with a bend in it and now have gone on to terminally bend and snap it so I now need to replace it. Its an 8mm od 3m pole with step down snaps for use as a cruising chute. Suggestions as to where to go for replacements welcomed. ?better to buy a length of aluminium tube and drill or buy a new pole complete.
Importing a replacement pole from Germany (its for the Dehler) seems an expensive way of doing this.
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MADFISH
New member
Re: On increasing the length of your pole.
Are you on the south coast??
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Are you on the south coast??
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MADFISH
New member
Re: On increasing the length of your pole.
You can buy a new section from a rigging company or someone like Seldons. You can then cut it to length and swap the end fittings over. This is the cheapest way of sorting and the one I would choose.
For the pole to bend in this way it is likely that the topping lift and downhaul are being connected to the middle of the spar which is a bit of a disaster. Try connecting them to the outboard end or have strops made up top and bottom. If this is confusing, PM me.
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You can buy a new section from a rigging company or someone like Seldons. You can then cut it to length and swap the end fittings over. This is the cheapest way of sorting and the one I would choose.
For the pole to bend in this way it is likely that the topping lift and downhaul are being connected to the middle of the spar which is a bit of a disaster. Try connecting them to the outboard end or have strops made up top and bottom. If this is confusing, PM me.
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Twister_Ken
Well-known member
If you are making your own
Fill the interior with foam or polystyrene. A spinnaker pole doesn't normally float for long otherwise.
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Fill the interior with foam or polystyrene. A spinnaker pole doesn't normally float for long otherwise.
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MADFISH
New member
Re: If you are making your own
Top tip Ken. Never thought of that. Doubt you have a need to worry anyway, your twister one I'll bet started life as a bit of tree!
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Top tip Ken. Never thought of that. Doubt you have a need to worry anyway, your twister one I'll bet started life as a bit of tree!
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Twister_Ken
Well-known member
Re: If you are making your own
I made my second Fireball one that way. I didn't make the first one like that. That's why I needed to make a second one.
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I made my second Fireball one that way. I didn't make the first one like that. That's why I needed to make a second one.
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MADFISH
New member
Re: If you are making your own
Having PM'ed cutter, looks like he may go with carbon (Cool stuff!!). I have no doubt he would take up your advice. You don't really want to buy/make yet another!
My downhaul stays clipped on to mine so hopfully I should never be kicking myself. (Famous last words)!
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Having PM'ed cutter, looks like he may go with carbon (Cool stuff!!). I have no doubt he would take up your advice. You don't really want to buy/make yet another!
My downhaul stays clipped on to mine so hopfully I should never be kicking myself. (Famous last words)!
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ccscott49
Active member
Thanks everbody, mine are tree, so float anyway. I dont want to fly a spinny, just the poled out yankees and possible a big ghoster.
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Twister_Ken
Well-known member
Whiskery poles.
Different animals then, what you need are called whisker poles.
On cruisy yachts these are sometimes telescopic, and sometimes permanently stowed up the mast on a sliding heel fitting (saves jousting on a swoopy foredeck with 15 feet of lance).
<A target="_blank" HREF=http://www.forespar.com/catalog/whiskerpoles/about.htm>More here</A>
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Different animals then, what you need are called whisker poles.
On cruisy yachts these are sometimes telescopic, and sometimes permanently stowed up the mast on a sliding heel fitting (saves jousting on a swoopy foredeck with 15 feet of lance).
<A target="_blank" HREF=http://www.forespar.com/catalog/whiskerpoles/about.htm>More here</A>
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ccscott49
Active member
Re: Whiskery poles.
I wouldn't put these poles up the mast, they are fairly heavy, 3 inch diameter 16 feet long douglas fir, with stainless ends, not hollow. i do have topping lifts for them, which makes it all a little easier. I know what you mean, but these poles are already made.I just wanted to know if thewy are about right length, it takes two of us to manhandle these babies! no end to end spinny gybing with these buggers, you'd need arnold schwarzeneger!
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I wouldn't put these poles up the mast, they are fairly heavy, 3 inch diameter 16 feet long douglas fir, with stainless ends, not hollow. i do have topping lifts for them, which makes it all a little easier. I know what you mean, but these poles are already made.I just wanted to know if thewy are about right length, it takes two of us to manhandle these babies! no end to end spinny gybing with these buggers, you'd need arnold schwarzeneger!
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PaulR
Active member
managed to bounce pole on last boat off the foredeck into the solent where it promptly sank-replacement bought as kit from z spars- their advice stuff bubble wrap in the tube before fitting ends-didn't need to try it for unsinkability but seemed like sound idea-light and readily available and should work provided you can prevent people popping it first!
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