Thanks, Graeme. I'd have to disagree with Bolger's implication that multihulls, or at least cats, are more difficult to design than monohulls. I think cats ...
43560
rhaldridge
Jun 1, 2008 6:36 pm
Ah, plans.... I confess I've gotten a few nibbles at that particular hook, some even before the boat was launched. In general, my response has been that it...
43561
doug6949
Jun 5, 2008 1:57 pm
Looks simple enough. Unfortunately, pure ethanol is difficult to buy in the US. Denatured alcohol is supposed to be ethanol with poison added to prevent...
43562
Douglas Pollard
dougpol1
Jun 9, 2008 11:54 pm
Kate II went sailing Saturday. It was some hot 100deg.close anyway, that it took a long time to rig and get her in the water. We were out in the sun and...
43563
rhaldridge
Jun 10, 2008 12:58 am
Congratulations, Doug! I'll look forward to seeing pictures and video. Ray...
43564
graeme19121984
Jun 10, 2008 2:36 pm
As usual Doug, an engaging piece to read that had me sharing your many feelings and concerns, I'm sure, at this wonderful time for you. Congratulations, I look...
43565
Douglas Pollard
dougpol1
Jun 10, 2008 3:44 pm
Thought everone might get a kick out of this. Doug My Dad wrote about the maiden voyage of the Kate II and I just wanted to add in my POV. I've never seen my...
43566
rhaldridge
Jun 10, 2008 6:27 pm
I took Slider out of the water for a few days, because I had some stuff I wanted to do and I thought it would be more convenient in the driveway than the slip,...
43567
Douglas Pollard
dougpol1
Jun 10, 2008 7:20 pm
I've never had a boat that would close reach on jib only. I think it's pretty amazing that the balance isn't all screwy and that it will pull any against a...
43568
Lew Clayman
lew_clayman
Jun 10, 2008 7:56 pm
It may be that the keel with the board up, balances forwards of where it balances with the board down. That is to say, it may be that the board pulls CLR back...
43569
Gavin Atkin
gavinatkin
Jun 10, 2008 8:11 pm
My observation is that the effective centre of effort of a sparless sail with lots of curve is well aft of where the usual arithmetic would place it - hence...
43570
rhaldridge
Jun 10, 2008 8:30 pm
... It's usually difficult to sail closer than a reach with ... That's been my experience. I think Lew might be onto something, when he noted that the board...
43571
Lew Clayman
lew_clayman
Jun 10, 2008 9:30 pm
... Even if I'm way off in this case, it would be a neat trick to design this relationship into a boat. To balance well under main alone is no trick; to...
43572
Bob
revbob87
Jun 11, 2008 3:36 am
Don't chime in often as most of you have much more experience than I do, but Gavin's observation on the center of effort being further aft on a 'big curved...
43573
John Gilbert
gilberj55
Jun 11, 2008 4:11 am
Boats with little lateral plane in the hull (ie: shallow bodied boats) seem to often do reasonably well with shifts of the Cof E. Traditional boats with long...
43574
rhaldridge
Jun 11, 2008 5:36 am
John, your post makes a lot of sense. I don't know if you can consider Slider a boat with little lateral plane, however. She goes fairly well to windward...
43575
John Gilbert
gilberj55
Jun 11, 2008 12:08 pm
The Tartan is a one design, using a 100% jib for class. We seldom sail with a genoa, as our rating changes, and there is little benefit in our normally windy...
43576
Douglas Pollard
dougpol1
Jun 11, 2008 12:17 pm
Here is what I think and it's only based on observation. I have mentioned this before and no one has disagreed so they are either being polite or they agree....
43577
Larry Goodson AMS
offshoresurv...
Jun 11, 2008 12:24 pm
I find that this ability varies considerably with sea state. More chop, more main needed. Larry Goodson ... From: rhaldridge...
43578
boatdesign@yahoogroup...
Jun 11, 2008 6:17 pm
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the boatdesign group. File :...
43579
nutty_boats
Jun 11, 2008 6:24 pm
As promised a while back, I prepared and uploaded a file describing the tests I made for seaworthiness, and the conclusions from it. Note the final conclusion:...
43580
rhaldridge
Jun 11, 2008 6:24 pm
... More chop, more main needed. ... That's an excellent point. In fact, when I was experimenting with Slider, we were only a couple hundred yards to leeward...
43581
nutty_boats
Jun 11, 2008 6:45 pm
John: I agree with you that it is in the power of the rudder. I think a lot of it has to do with lever action: on your typical “long keeled” boat, the...
43582
Jon & Wanda(Tink)
tinkerbell98683
Jun 12, 2008 5:31 am
Problem is in the real world in 2 min it can get rough on rivers and lakes and in 3 chopy water. It is like going for a hike with no water then getting lost....
43583
graeme19121984
Jun 12, 2008 10:10 am
I believe there might be something to what Doug said, but I wonder about the different degree of camber in the usual jib between the foot and higher up. The...
43584
Don Nicholson
maintann
Jun 12, 2008 11:46 am
to the best of my knowledge ethanol is a lot cheaper to manuf than methanol & they put a bit of methanol in the ethanol to make " Metholated Spirits" which...
43585
Don Nicholson
maintann
Jun 12, 2008 12:21 pm
We're often lazy & sail Catnap ( Jarcat J6) with only the genoa up. Almost as close winded as with both sails. (The Jarcats have the mast stepped well back &...
43586
Douglas Pollard
dougpol1
Jun 12, 2008 2:17 pm
Along these same lines in 1979 when I was building Wolftrap a good friend of mine bought a used Coronado 23. It had a fin keel and spade rudder and the hull...
43587
Douglas Pollard
dougpol1
Jun 12, 2008 2:31 pm
I meant to add that sheeting to the middle of the boom does somewhat the same thing as a sprite does because it pulls straight down on the sail. But here again...
43588
rhaldridge
Jun 12, 2008 3:55 pm
... There was noticeably more, especially in the light wind we had once we got inside the bayou where high banks and large houses steal most of the air. It...
