Mast Head Wind Bird Question???

9 years ago
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cisco
cisco
QLD
12365 posts
QLD, 12365 posts
1 Jun 2017 2:15pm
I have my rig down for new rigging and will have hanked on sails instead of the head sail furler.

With this, and Second Wind being a fin keeler and having quite a slippery hull profile, I am expecting she will point quite high.

I am setting up the mast head with new LED tri-light/anchor light which I am hoping will throw light high enough to strike the reflective tabs of the wind bird. The wind bird is the same as this one:-
www.whitworths.com.au/

It is old and I had to effect some repairs to it but it is working quite well. Two questions.

1. What reflective tape or paint will be the best to put on the underside of the indicator tabs, ie, that won't fall off after a month??

2. More importantly, the angle between the indicator arms is currently 30 degrees which seems rather silly. The boat is never going to sail at 15 degrees off the wind. I am thinking the angle to set the arms at should be either 60 or 90 degrees.

If anybody can get a boat to sail 30 degrees off the wind, the boat and the sailor are pretty damned good.

For a performance sloop 45 degrees is regarded as being the best possible angle is it not??

What think Ye merry men??
MichaelR
MichaelR
NSW
862 posts
NSW, 862 posts
1 Jun 2017 2:32pm
Cisco, I have the same wind bird, it's pretty good and you're right about the angles. Mine has been on about 5 years and is still in good nick. The masthead white light reflects nicely off the tails.

www.gamart.com.au/3M-3200-Reflecitve

You can buy it by the metre, although I know you don't need that much, you could start a business refurbishing wind birds. It suggests, and we've used it in our business, that it will last up to 7 years outside. I "think" this is pretty much the same stuff as what the Whitworth wind birds have OEM.
Jethrow
Jethrow
NSW
1282 posts
NSW, 1282 posts
1 Jun 2017 3:10pm
Just remember that the 90 degrees you are talking about is from the true wind, there is an apparent wind component. If you're only sailing 45 degrees to the apparent wind then you're not making much ground to windward. I'd go for the 60 degree option, that will still be tacking through about 90 degrees. 45 would be for a true performance boat (we will do 19 - 25 AWA depending on wind in a Farr 40).
Bristolfashion
Bristolfashion
VIC
490 posts
VIC, 490 posts
1 Jun 2017 4:17pm
I always think of the arms as the "no go " area downwind unless deliberately running with a preventer.

Cheers

Bristle
Kankama
Kankama
NSW
826 posts
NSW, 826 posts
1 Jun 2017 7:13pm
My preference is to not have any wind indicators at all. I prefer to always ask the sails what they need rather than be directed by a part of the boat that doesn't know what the sails want.

Upwind, you winch the genoa in and sail to the luff, full and bye in light winds and higher as the wind comes in. Let the boat tell you what it wants through the luff quiver, telltales, helm and heel.

I wouldn't mind electronic wind instruments sailing upwind at night in the rain, but that is it.

cheers

Phil
Donk107
Donk107
TAS
2446 posts
TAS, 2446 posts
1 Jun 2017 7:41pm
Down here on the Huon it is not uncommon for the Windex to do circles at the top of the mast in light winds

I probably look at it more often when sailing downwind rather than upwind

I also have wool on the shrouds and backstay to give a idea of what is happening without looking up

Regards Don
southace
southace
SA
4803 posts
SA, 4803 posts
1 Jun 2017 8:28pm
Raymarine ! My adams 42 sailed at 0r just away from 30 degrees to windward and 35 degrees I achieve a extra knot or so. I really don't enjoy looking up to the top of the mast all the time gives me a stiff neck! 3m retrective tape is most properly the best.
cisco
cisco
QLD
12365 posts
QLD, 12365 posts
1 Jun 2017 9:16pm
Thanks for the responses all.

I will have tell tails on sails, wool on the shrouds and I know how to sail by the luff but the wind bird is an extra aid. I have one so I might as well get it right while the rig is down.

The wind bird is particularly useful in the dark with good reflective on it as an occasional reference. I certainly would not be looking up at it all the time.

I will go with Jethrow's advice for 60 degrees and use 3M tape.

Thanks all.
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