Sails ,as long as they are standard dimensions, and running rigging upgrades
should not impact the PHRF rating. A modified rudder may incur a penalty
of 3 or 6 sec/mi.
Water Ballast Analysis (From another thread)
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should not impact the PHRF rating. A modified rudder may incur a penalty
of 3 or 6 sec/mi.
Depends on foresail
If smaller sails only are used, you may get the PHRF adjusted higher, and if larger, typically nylon and/or coloured sails are used the PHRF will be lowered.
Most clubs maintain white sail/coloured sail PHRFs for all boats in the fleet. If you use a coloured sail anywhere on the course, you get PHRF'd based on that, for the whole course.
PHRF numbers are driven by winning boats, and since winning boats generally have pretty good sails, PHRFs are based on sails being in very good condition.
Generally, a PHRF is based on the largest non-light air "design" genoa for a given boat.
If smaller sails only are used, you may get the PHRF adjusted higher, and if larger, typically nylon and/or coloured sails are used the PHRF will be lowered.
Most clubs maintain white sail/coloured sail PHRFs for all boats in the fleet. If you use a coloured sail anywhere on the course, you get PHRF'd based on that, for the whole course.
PHRF numbers are driven by winning boats, and since winning boats generally have pretty good sails, PHRFs are based on sails being in very good condition.
guess Druid dumped ballast and took off....hope he was for real and sincere with his questions, or at least went back to sailing anarchy/etc. and will now help educate the many awesome sailors who ignorantly (have never sailed one) write of the inferior sailing charateristics of the 26s/26d (don't know about the x or m).
I ponder selling my boat for a more expensive one at times...then I realize that mine does most everything I need and want with ease and less expense.
I ponder selling my boat for a more expensive one at times...then I realize that mine does most everything I need and want with ease and less expense.
<sigh> Well, first, I haven't posted here for a while because I'd learned what I wanted to: I understand the analysis in the link, as well as the implied shortcomings and requirements. So I had no reason to continue the discussion.
Second, as to my troll nature: I tried VALIANTLY to avoid mentioning any specific brand of boat - I was discussing the physics behind water ballast. It was OTHERS who dragged boat brands into the discussion. I was not knocking or attacking any boat or brand-name; I was examining physics.
Third: OK, if you MUST get into a "my d*ck is bigger than your d*ck", I will explain why a Mac26 is normally not as fast as a Crown 28:
1. Mast height: mine is substantially taller. This means:
a) I carry more sail "standard"
b) I can pick up the wind higher, and normally the wind is stronger the higher you go, and
c) most drive upwind is from the luff of the sail. Mine is longer, giving me more drive.
2. You have less ballast. I carry 2800lb, 4ft down. No matter how much water you put in your hull, that gives me more righting moment so:
a) I can carry more sail, and/or
b) I sail flatter for a given sail area, which gives
i) more power from the sail when it's more perpendicular, and
ii) more upwind lift from the keel.
Now, you DO have one substantial advantage over me: you are FAR lighter, even with the water ballast. That, combined with the wide, flat bottom will give you more speed downwind (but remember, you're carrying less sail area...)
So - just as I have observed, I will be substantially faster and higher to windward, but you will probably be faster off the wind. Overall result? Donno - depends on the course... Wanna find out? I'm entering the Nanaimo Single-handed race this June - come on up!
druid - bottle of Mount Gay says I cross the finish line ahead of you
Second, as to my troll nature: I tried VALIANTLY to avoid mentioning any specific brand of boat - I was discussing the physics behind water ballast. It was OTHERS who dragged boat brands into the discussion. I was not knocking or attacking any boat or brand-name; I was examining physics.
Third: OK, if you MUST get into a "my d*ck is bigger than your d*ck", I will explain why a Mac26 is normally not as fast as a Crown 28:
1. Mast height: mine is substantially taller. This means:
a) I carry more sail "standard"
b) I can pick up the wind higher, and normally the wind is stronger the higher you go, and
c) most drive upwind is from the luff of the sail. Mine is longer, giving me more drive.
2. You have less ballast. I carry 2800lb, 4ft down. No matter how much water you put in your hull, that gives me more righting moment so:
a) I can carry more sail, and/or
b) I sail flatter for a given sail area, which gives
i) more power from the sail when it's more perpendicular, and
ii) more upwind lift from the keel.
Now, you DO have one substantial advantage over me: you are FAR lighter, even with the water ballast. That, combined with the wide, flat bottom will give you more speed downwind (but remember, you're carrying less sail area...)
So - just as I have observed, I will be substantially faster and higher to windward, but you will probably be faster off the wind. Overall result? Donno - depends on the course... Wanna find out? I'm entering the Nanaimo Single-handed race this June - come on up!
druid - bottle of Mount Gay says I cross the finish line ahead of you
Had nothing to to with our relative d--k size. You implied in your thread that the speed difference was due to water ballast... A possible aggrevating factor is all the negative b.s I hear about my boat from folks that have never sailed one.
Your last post makes much more sense than "water ballasted boats....I sail past them all the time" that was in the first one". Perhaps we jumped the "another ignorant/propagandal anti mac thread gun". Sorry about that.
I have found 8-14 mph winds is ideal for my boat going upwind with the sails I have. Any more and I have to reduce sail or have rail meat ready (not an option at Nanaimo, you have my curiosity peaked gonna google the race). I truly have found that my boat is fast for it's size.
I doubt that I will be over that way, I am east coast, but you never know....it does sound interesting; and with some rum as an incentive to boot
I am taking the summer off!!! But am pretty certain my (and my girlfriends) plans involve other things.
Your last post makes much more sense than "water ballasted boats....I sail past them all the time" that was in the first one". Perhaps we jumped the "another ignorant/propagandal anti mac thread gun". Sorry about that.
I have found 8-14 mph winds is ideal for my boat going upwind with the sails I have. Any more and I have to reduce sail or have rail meat ready (not an option at Nanaimo, you have my curiosity peaked gonna google the race). I truly have found that my boat is fast for it's size.
I doubt that I will be over that way, I am east coast, but you never know....it does sound interesting; and with some rum as an incentive to boot
I am taking the summer off!!! But am pretty certain my (and my girlfriends) plans involve other things.
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