Is this a G10 rig?

Sailing-61-North
Posts: 315
Joined: Thu Jun 04, 2020 8:17 pm
Location: Valdez - AK
Contact:

Re: Is this a G10 rig?

Post by Sailing-61-North »

Attached is an updated design with the reef points basically parallel to the wishbone set at 71-degrees. I was thinking the clew ones could be a little bit higher?

The other question they have is the height of the clew end of the wishbone. I used the sail plan drawing which has it at 2-ft. I also added more roach.
Attachments
71.5 Degree Reef.DS1`.jpg
71.5 Degree Reef.DS1`.jpg (43.33 KiB) Viewed 2952 times
S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

User avatar
seadago
Posts: 154
Joined: Sun Jun 03, 2012 8:42 am
Location: Lowestoft, England

Re: Is this a G10 rig?

Post by seadago »

Hi
I think the luff reefing points on your diagram are set a bit too high. If you tighten the outhaul with the reefing points as you have them, your sail will show wrinkles along the reefing tention line, i.e. too much vertical tension component, too little horizontal tension component. On the pic of Nausikaa on a previous post in this thread, you can see some of these "wrinkles" on the mizzen. Not too bad, but not quite good either.
You have room to adjust. Bring the luff reefing points down a bit. They can go a little below the boom choke (as shown in my diagram on previous post), and still be above the horizontal of the leech reefing point. The lashing line around the mast will loop over the boom choke for the flaked (bottom) part of the sail. No problem with this. Something like the pic below.
sail reefing points.jpg
sail reefing points.jpg (40.71 KiB) Viewed 2888 times
This pic is a representation of my sails. When I reef, the leech reefing points are level with the boom aft and the luff reefing points fall a little below the boom choke forward. In summary the foot of the reefed sail forms at an angle slightly less than the boom itself. This gives me a good balance between vertical tension and horizontal tension when I set the reef and tension the outhaul.

Good job so far though, and the sails look great!
Rafael
s/v Nausikaa
SSR 30570, sail GBR 4619L
F30 CK (Hoyt), wishbones, centreboard, G10 rig. Built by Fairways Marine, Humble, UK, '82
Beta 16 hp with two-blade prop

Sailing-61-North
Posts: 315
Joined: Thu Jun 04, 2020 8:17 pm
Location: Valdez - AK
Contact:

Re: Is this a G10 rig?

Post by Sailing-61-North »

Thanks again. As the old saying goes a picture is worth a thousand words. And yes I agree the "angle of the reef" was unique. We will keep tweaking this and at some point run with it. Heck I have already paid them in full so now it's just getting it the way I like it and functional.
S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

Sailing-61-North
Posts: 315
Joined: Thu Jun 04, 2020 8:17 pm
Location: Valdez - AK
Contact:

Re: Is this a G10 rig?

Post by Sailing-61-North »

Yellow - 2nd reef
Green - 1st reef
Red - location of reef point when reefed.

Just checking to see if that was what the picture was depicted.
S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

Sailing-61-North
Posts: 315
Joined: Thu Jun 04, 2020 8:17 pm
Location: Valdez - AK
Contact:

Re: Is this a G10 rig?

Post by Sailing-61-North »

Updated reefing angles. Will confirm tonight after work and go forth.
Attachments
Main and Mizzen Design Shot.jpg
Main and Mizzen Design Shot.jpg (73.5 KiB) Viewed 2745 times
S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

Sailing-61-North
Posts: 315
Joined: Thu Jun 04, 2020 8:17 pm
Location: Valdez - AK
Contact:

Re: Is this a G10 rig?

Post by Sailing-61-North »

Well it looks like the sail will fit. Had to double check the measurements.

What is the recommendations for lacing? Specifically material: Dynmeea vs webbing vs standard 10-mm yacht braid. My next challenge.
Attachments
41599.MZ.rev3-Panel-View.pdf
Mizzen Panel View Page 1
(112.58 KiB) Downloaded 126 times
41599.M.rev3-Panel-View.pdf
Main Panel View Page 2
(119.6 KiB) Downloaded 135 times
S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

User avatar
seadago
Posts: 154
Joined: Sun Jun 03, 2012 8:42 am
Location: Lowestoft, England

Re: Is this a G10 rig?

Post by seadago »

Sailing-61-North wrote:
Thu Nov 18, 2021 9:32 pm
Well it looks like the sail will fit. Had to double check the measurements.

What is the recommendations for lacing? Specifically material: Dynmeea vs webbing vs standard 10-mm yacht braid. My next challenge.
I think they look great, and you´ve got the angle of the reef points right.
What I would suggest now is:
a) define a reefing schedule for yourself. There are two or three in the forum. Do a search
b) once you have your reefing schedule, do a quick back-of-the-fag-pack calculation of % of sail aloft in sq feet for the main and mizzen, to make sure that the proportion of both sails with respet to each other does not change too much as you progress through the schedule. This will ensure that the sails remain balanced as you reef, and will tell you if the reefing points overall are in the correct position/height.

Cheers
Rafa
Rafael
s/v Nausikaa
SSR 30570, sail GBR 4619L
F30 CK (Hoyt), wishbones, centreboard, G10 rig. Built by Fairways Marine, Humble, UK, '82
Beta 16 hp with two-blade prop

User avatar
seadago
Posts: 154
Joined: Sun Jun 03, 2012 8:42 am
Location: Lowestoft, England

Re: Is this a G10 rig?

Post by seadago »

Re lacing line, would suggest choose something that will minimise friction. I use 8 mm braided polyester, but its entirely a matter of personal choice
Rafael
s/v Nausikaa
SSR 30570, sail GBR 4619L
F30 CK (Hoyt), wishbones, centreboard, G10 rig. Built by Fairways Marine, Humble, UK, '82
Beta 16 hp with two-blade prop

Sailing-61-North
Posts: 315
Joined: Thu Jun 04, 2020 8:17 pm
Location: Valdez - AK
Contact:

Re: Is this a G10 rig?

Post by Sailing-61-North »

Main sail 243 sqft. Mizzen 147 sqft.
Reef #1 for both are 73% aloft
Reef "2 for both are 53% aloft
Reef "3 for the main is 33% aloft.

I did see that reefing guide. I shall take a look and utilize it this summer.

As for lacing. The only reason I was looking at dyneema is due to it's slippery characteristics.
S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

User avatar
seadago
Posts: 154
Joined: Sun Jun 03, 2012 8:42 am
Location: Lowestoft, England

Re: Is this a G10 rig?

Post by seadago »

all ready to roll my friend! :mrgreen: :mrgreen: :mrgreen:
Rafael
s/v Nausikaa
SSR 30570, sail GBR 4619L
F30 CK (Hoyt), wishbones, centreboard, G10 rig. Built by Fairways Marine, Humble, UK, '82
Beta 16 hp with two-blade prop

Post Reply