cd25 mast rake

[Greg Phillips]

Does anyone know what the designed or optimun mast rake is for a '77 cd25? I have split my backstay with an adjustable bridle and have more tensioning control now. Weather helm seems excessive at times and I would like to hear from anyone with advice on the matter. Thanks s/v Linda Lou #469



2mileyc@digital.com

[Bruce Bett]

My experience suggests that the CD25 does best with little or no rake to mast. I'm still experimenting.

Bruce Bett
Sostenuto
CD25 #496

Does anyone know what the designed or optimun mast rake is for a '77 cd25? I have split my backstay with an adjustable bridle and have more tensioning control now. Weather helm seems excessive at times and I would like to hear from anyone with advice on the matter. Thanks s/v Linda Lou #469

Bett@macomb.cc.mi.us

[Anthony P. Jeske]

Section 3.28 of the Owner's Manual says: "the mast is stayed plumb..."
Section 3.29 states::The fore and aft alignment of your mast can be checked by comparing it to a vertical structure such as a radio tower, chimney, etc...."
These statments would lead me to believe that the boat is designed to have no rake in the mast.
There has been a lot of discussion on this site about weather helm. You may want to check the archives for some excellent advice on how to deal with weather helm.
Regards,
Tony Jeske



ajeske@ixpres.com

[mibrinn]

Section 3.28 of the Owner's Manual says: "the mast is stayed plumb..."
Section 3.29 states::The fore and aft alignment of your mast can be checked by comparing it to a vertical structure such as a radio tower, chimney, etc...."
These statments would lead me to believe that the boat is designed to have no rake in the mast.
There has been a lot of discussion on this site about weather helm. You may want to check the archives for some excellent advice on how to deal with weather helm.
Regards,
Tony Jeske

Look at the way the mast is stepped on the deck . uyou will see that there really isnt any room to rake her back or foward this is supported by the set up data on the boat as well as correspondance by the owners.

If you look at the mast section youll see that it is basically a stiff section with no real ability to bend aft..IN j and other boats the xsections are flexible and the part of the mast can bend off in puffs.
SO... you need to address helm by changing other things than the mast rake...traveller vang,mainsheet outhaul, cunningham are what needs to be adjusted..and of course reefing ..hope this helps



Mibrinn@aol.com

[Ed Campbell]

Does anyone know what the designed or optimun mast rake is for a '77 cd25? I have split my backstay with an adjustable bridle and have more tensioning control now. Weather helm seems excessive at times and I would like to hear from anyone with advice on the matter. Thanks s/v Linda Lou #469

Greg:
Cassiopeia, hull #13, predates owner's manuals. However, the mast should start the day plumb. Have someone else go aboard and sit in the cockpit while you watch the result. You'll quickly see that the secret is to get the weight out of the stern of the boat. That includes moving the engine to a seat locker, if you really want a sailing boat.
Regards,
Ed




campbell@waltereden.com

[Ed Haley]

Another option which has been tried by myself and others has been to ADD weight to the space beneath the bow berth. I have added three bags of sand totalling about 180 pounds. This effectively puts the bow down and raises the stern enough to make a nice difference in the sailing speed. Larry DeMers is another advocate of this method of "leveling" the Cape Dory especially if you have a heavy Volvo engine. I can vouch the method made my CD28 Jasmine faster, especially if there is a crew member taking a nap in the bow berth while sailing along with the hidden sand. Sounds goofy but it works. Add some water to your water tanks to get some additional help. Try it and adjust as needed to your CD25



eghaley@twcny.rr.com