gennaker, asymmetrical spinnaker

[popeye]

Hi,
I saw on some pictures of Mike Brooks CC87 that he is using an asymmetrical spinnaker.
Does anybody knows the dimensions of such a sail and whether this is more efficent then the genoa.

[David Hudson]

Hi Frank

Hyde have just built me a modified gennaker.

Mike's gennaker is built for use with a furler. I'm using a halyard
and a form of guy on the tack. Hyde have also modified the shape
slightly to increase the scope of use. I do not have a drawing on my
current netbook. I'll send a copy later.

As to usefulness. I wouldn't be putting out the cash just for a pretty
sail. It will definitely give you more grunt when reaching

Paul Austin, the sales manager at Hyde, is most helpful. I met him
at the Boat Show earlier this month.

Why not give Paul a buzz on: office +44(0)845 543 8949 or
mobile: +44(0)7801 907458 email: paulaustin@hydesails.co.uk

Regards
David Hudson

[Simon Head]

Hi Everyone

You should be aware that if you do the mathematics on Mikes spinnaker the point loadings on the mast fittings when the spinnaker collapses and fills can severely load both the top mast fittings and the shrouds. This may cause wear with the through bolt fitting at the top of the mast, possibly causing the bolt to elongate the hole and at a worse causing total rig failure.

The CC19 was never designed to run with a spinnaker- this is one of the reasons that HM are not offering this as a standard sail. Be aware!!!!

See this thread:

http://www.boatdesign.net/forums/boat-design/mast-design-heel-loads-30119-2.html

I would stick with the genoa!

Regards

Simon Head
CC40 "Halcyon"

[David Hudson]

Mike

Please see me private message.

David

[David Hudson]

Thank you for your comments Simon.I will certainly keep them in mind.

There are certain conditions when a gennaker will be appropriate.
Wind conditions and sea state dictate each choice of headsail choice
or mainsail reef.

Got all the fittings. Just need some decent weather to fit them.

David

[David Hudson]

See Rig Development.

[Phil]

Some 12 years after this thread was started, I’m trying to work out how to rig the gennaker that came with Sea Badger II. As far as I can see, the only part of Mike’s original system still in place are two fairlead sheeting blocks attached to the aft mooring cleats.
I’m planning on a halyard at the top of the mast and the tack line to the end of the bowsprit for deployment and retrieval rather than a furling system.
Does anyone already use a conventional haul out and back type system who wouldn’t mind sharing?
Can any one suggest suitable mast head and bowsprit end fittings and fixing methods, please?