This is a truly elegant and beautiful looking jib rig. Congratulations on the design and execution.
1) It isn't clear to me from the pictures where you've attached the 2 mast stays to on the AI. They run from the top of the jib mast (there are two mast stays yes?), but to where?
2) is there a purpose related to the jib mast setup for the pad eye that shows on the picture of your modified hatch cover?
3 it seems like the mast base piece isn't pictured. Its inside the pvc pipe yes? Did it comes with the sail kit, or do you have to have another boat to take it from?
4) if convenient it would be great to see a picture of the furler sometime. Its mechanism is not clear to me from the description.
5) in what conditions of wind, water, and speed have you tested this rig? How stable is it? How much extra power/speed does it provide? I think the other jib rigs described in this forum have been recommended for use in light winds only, I assume because they use the main mast which is not supported. Are there any performance drawbacks with your rig? If you have sailed with it in chop, does it affect the tendency fo the AI bow to submarine when running downwind?
First of thank you Timo for the compliment
Yes there are two mast stays and i took two of the photos and traced the stays in red in paint so you can see where they are.
my paint hand in not so steady so please excuse the jagged line
and the stays attach to the chrome pad eyes here
that chrome pad eye on the modified hatch was originally for the jib sheet when i was trying to make the jib self tacking. that didn't work out so well and now i use that pad eye to tie my bow lights too.
yea the regular mast base is epoxied inside of that section of pvc. and i got the kayak sail base from an old adventure. the mast base does not come with the small sail kit, i comes attached/molded in with the boats or you can order it from hobie as a replacement piece (part # 84550001 MAST RECEIVER)
here is a picture of the furler base/drum
my main purpose for this piece was to tie the black and red line to the wider pvc end in order to give me a little bit of leverage in order to furl the jib
and finally question #5
I have tested my rig in light calm conditions all the way up to 20mph winds and 3 foot swells.
At slower wind speeds and calmer water conditions, the rig is very stable, but once the winds pick up over that 10 to 15 mph mark, the small sail kit mast starts to bend and shed most of the wind. at that point the AI follows and tends to bury the down wind Ama between 3 and 10 inches deep. needless to say this is the time when i furl the jib
In winds up to about 15 mph, the jib adds a significant amount of "get up and go" meaning the AI accelerates noticeably quicker. i have not tested this rig with my gps yet but my older, non-furling design allowed me to reach 16 mph in about 22 mph, verses not using the jib in the same conditions i only could reach about 11 or 12 mph.
Im not going to say this rig is bomb proof, but it has held up to 20mph winds before. I have damaged (minor) the modified hatch's v-bracing once before, but other than that i have not damaged any other aspects or components of this rig. the biggest draw back to my rig would be if i choose to use the rig in high winds, (<20mph) the down wind Ama will
go under water and it will slow down the AI. At that point it is best to furl the jib and just sail on the main.
I have sailed this rig in chop up to 3 ft and the jib actually pulls the bow up above the water and helps to prevent the bow from submarining. it also helps keep the bow out of the water on every point of sail i have used the jib on.
Also when sailing straight down wind i have figured out that if the jib and the main are on opposite sides (i.e. sailing leaf on leaf) the AI is pretty quick down wind.
Thank you for all the great questions!
2008 Papaya Adventure Island with Roller Furler Jib
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