Re: [Cal_Boats] Used J105 sail -- was this but has been others.

Although my L-36 and a J105 have the same I and J the J105 has a flat deck and my L-36 deck raises up as it goes to the bow. Thus, my forestay is shorter than the forestay for a J105. Must be a lot shorter because I have no roller furling and at least the way I read it they have a roller and their jib has to fit above the roller. The long and short of it is that a J105 sail is too long for my short forestay. I am basing this on the class rules for the J105 which specifies a luff of 41.6, foot of 14.5 and a leach of 37 feet. My distance from the tack to the shackle on the jib halyard is 40' 10". The forestay must be a bit longer than that. What I want is more like 40' luff assuming I back off about a foot from blocking the halyard (is this about right?) foot of about 13-14' and leach of about 36' or a little longer. Allen On Fri, Dec 11, 2009 at 11:10 AM, Allen Edwards <al… [at] gmail.com> wrote: > Oh, I have hanked on sails and I am guessing any J105 sail is going to have > a luff tape. How hard is it to convert? I have lots of hanks on older > sails that I could probably use but am unsure about the rest. > Allen > > On Fri, Dec 11, 2009 at 10:56 AM, Allen Edwards <al… [at] gmail.com> > wrote: >> >> Wow, I had not considered a J105 but it has identical J and I to my boat >> (13.5, 40.5). I see class dimensions of 41.5, 14.5 and 37 feet for the jib. >> That would make it a 95% sail on my boat and more or less a perfect fit. I >> must have something wrong if it fit on your boat with a 40.3 ft forestay. >> Perhaps you can explain that. >> Where would I find one and do you have an idea how much I should expect to >> pay? Might be just what I need. I see a couple of fancy ones in San Diego >> on the class web site for $400 and $550 respectively but nothing up here in >> SF. I don't think I want a sail built for SD. >> This is a great tip, thanks! >> Allen >> (with trust in science) >> >> On Fri, Dec 11, 2009 at 9:51 AM, Michael Robinson >> <mi… [at] hotmail.com> wrote: >>> >>> >>> >>> Allen, >>> I recently picked up a class jib from J 105 (Mylar/dacron). It works out >>> to about 90-95% for my Cal 36 (I=42-J=14.5). My forestay with roller furling >>> is 40' 4". The sail is heavy enough for SF Bay and has a great shape. The >>> J-105 fleet recently allowed new sail cloth (carbon fiber?) so there should >>> be more of these around. The boat handles great with the smaller jib. I >>> purchased her with a 130%...too much in 20+ knts. I agree new mail is great. >>> Our boats have large mains by today's standards... lots-o-power from main. >>> >>> >>> Mike Robinson >>> Holiday >>> Cal 36 # 4 >>> global warming skeptic >>> > >

I think I made a math error.12150mm is 39.8 feet so it may fit afterall. Need to look at this some more. Sorry for hitting the list before I did my homework. Allen On Mon, Dec 14, 2009 at 5:16 PM, Allen Edwards <al… [at] gmail.com> wrote: > Although my L-36 and a J105 have the same I and J the J105 has a flat > deck and my L-36 deck raises up as it goes to the bow. Thus, my > forestay is shorter than the forestay for a J105. Must be a lot > shorter because I have no roller furling and at least the way I read > it they have a roller and their jib has to fit above the roller. The > long and short of it is that a J105 sail is too long for my short > forestay. > > I am basing this on the class rules for the J105 which specifies a > luff of 41.6, foot of 14.5 and a leach of 37 feet. My distance from > the tack to the shackle on the jib halyard is 40' 10". The forestay > must be a bit longer than that. What I want is more like 40' luff > assuming I back off about a foot from blocking the halyard (is this > about right?) foot of about 13-14' and leach of about 36' or a little > longer. > > Allen > > > On Fri, Dec 11, 2009 at 11:10 AM, Allen Edwards > <al… [at] gmail.com> wrote: >> Oh, I have hanked on sails and I am guessing any J105 sail is going to have >> a luff tape. How hard is it to convert? I have lots of hanks on older >> sails that I could probably use but am unsure about the rest. >> Allen >> >> On Fri, Dec 11, 2009 at 10:56 AM, Allen Edwards <al… [at] gmail.com> >> wrote: >>> >>> Wow, I had not considered a J105 but it has identical J and I to my boat >>> (13.5, 40.5). I see class dimensions of 41.5, 14.5 and 37 feet for the jib. >>> That would make it a 95% sail on my boat and more or less a perfect fit. I >>> must have something wrong if it fit on your boat with a 40.3 ft forestay. >>> Perhaps you can explain that. >>> Where would I find one and do you have an idea how much I should expect to >>> pay? Might be just what I need. I see a couple of fancy ones in San Diego >>> on the class web site for $400 and $550 respectively but nothing up here in >>> SF. I don't think I want a sail built for SD. >>> This is a great tip, thanks! >>> Allen >>> (with trust in science) >>> >>> On Fri, Dec 11, 2009 at 9:51 AM, Michael Robinson >>> <mi… [at] hotmail.com> wrote: >>>> >>>> >>>> >>>> Allen, >>>> I recently picked up a class jib from J 105 (Mylar/dacron). It works out >>>> to about 90-95% for my Cal 36 (I=42-J=14.5). My forestay with roller furling >>>> is 40' 4". The sail is heavy enough for SF Bay and has a great shape. The >>>> J-105 fleet recently allowed new sail cloth (carbon fiber?) so there should >>>> be more of these around. The boat handles great with the smaller jib. I >>>> purchased her with a 130%...too much in 20+ knts. I agree new mail is great. >>>> Our boats have large mains by today's standards... lots-o-power from main. >>>> >>>> >>>> Mike Robinson >>>> Holiday >>>> Cal 36 # 4 >>>> global warming skeptic >>>> >> >> >