PHRF rating for 32

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bg5w
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PHRF rating for 32

Postby bg5w » Tue Jan 27, 2015 11:29 am

I need to get a PHRF rating for the 32 for west coast florida. I searched all of the old threads on this topic, and it appears they're all over the place. I plan to start from scratch. Does anyone know the I and J measurements for the fore triangle for the short mast 32?

thanks
Bob Gruber
island time 32

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thinwater
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Re: PHRF rating for 32

Postby thinwater » Tue Jan 27, 2015 12:35 pm

a. Just use the slowest of those you found :twisted: !

b. The trouble with racing a cruising cat is that you must wring every ounce of weight out of the boat to be competitive. It is very different from heavy monos. And good sails. And a clean bottom. And you have to pay attention.

c. Don't get a rating with a chute or genoa unless you are willing to do a lot of rigging changes. Although it can work very well, the boats are not set up for these from the factory.


Though I've played with speed polars (on my blog) and modified the boat to perform better, I've not been interested in racing in a long time. And yeah, the PHRF for the boat is not well defined. Good luck.

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Re: PHRF rating for 32

Postby bg5w » Tue Jan 27, 2015 3:27 pm

Thanks Drew
I think I just answered my own question - got these numbers from a sail makers website:

BOAT I J P E ISP JSP PY EY Disp LWL DRAFT
Pdq 32 40.33 12.75 35 13.75 7200 31 2.5

didn't line up right with cutting and pasting, but:
I - 40.33
J - 12.75
P - 35
E - 13.75

"P" is the luff length of the mainsail, measured along the aft face of the mast from the top of the boom to the highest point that the mainsail can be hoisted or black band.
"E" is the foot length of the mainsail, measured along the boom from the aft face of the mast to the outermost point on the boom to which the main can be pulled or to the black band.
"I" is measured along the front of mast from the genoa halyard to the main deck. The main deck is where the deck would be if there were no deckhouse.
"J" is the base of the foretriangle measured along the deck from the headstay pin to the front of the mast.
"JSP" is the length of the spinnaker pole or the distance from the forward end of the bowsprit (fully extended) to the front face of the mast.
"ISP" is measured from the highest spinnaker halyard to the deck.
"PY" and "EY" are, respectively the luff length and foot length of the mizzen of a yawl or ketch measured in the same way as for the mainsail.
"IY" is the measurement from the staysail halyard to the deck.
"JY" is the measurement from the staysail stay to the front face of the mast.
"LP" is the shortest distance between the clew and the luff of the genoa.

Bob Gruber

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Re: PHRF rating for 32

Postby thinwater » Tue Jan 27, 2015 4:10 pm

Great.

When you get a rating, post it so we can save it for other folks. Meanwhile, I added the measurements to one of m blog pages (with the speed polars).

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Re: PHRF rating for 32

Postby bg5w » Tue Feb 17, 2015 6:15 pm

Attached is the PHRF rating for the PDQ 32 with standard equipment. It appears to fall between 228 and 234, depending on the type of race. I think I attached it correctly. If not, let me know.

Bob Gruber
Island Time 32
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GRU-PDQ32.pdf
Bob Gruber
(48.78 KiB) Downloaded 784 times

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Re: PHRF rating for 32

Postby Phenix » Tue Mar 17, 2015 1:13 pm

Very helpful, thank you. Would you happen to have the mainsail and jib measurements (MGT,MGU,MGM of mainsail and midgirth of jib) that you submitted with your application, just so I can compare it to mine and know what I might expect?
--

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Re: PHRF rating for 32

Postby bg5w » Tue Mar 17, 2015 2:05 pm

All of the measurements submitted are in the attachment. In re-reading it, it appears the PHRF rating is 200, and not the previously stated numbers

bob gruber
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Re: PHRF rating for 32

Postby thinwater » Tue Mar 17, 2015 2:15 pm

Thanks for sharing!!

And hence the problem with non-onedesign racing; the rating varies from 147 to 234, depending on the trim and state of maintenance. And are the sails all stock, or are some of different construction? If you run newer sails, lift all the side curtains or forget them at home to reduce drag, forget the dingy, clean out all of the lockers bare, scrub the bottom, run low on water and fuel, pump out the holding tank, empty the galley and take lunch in a bag, leave at least one of the propane tanks at home, you may be 30 points below someone who comes as they are (the ratings assume even cruisers have a clean bottom, good sails, MT tanks, and strip down some). That's just the way it is. Multihulls are more sensitive this way than monos, so it matters less to them. Add the fact that monos and multis are different according to wind speed, course and chop, and mixed fleet racing is really just a group cruise... which is OK.

It seems to list you as 100% headsail. If it is the self-tacker it is much less than that, and if it is a genoa it is probably more and without inside tracks won't go to weather much. You might want to check that.

Yeah, I used to race Prindles. Long ago. Itty bitty rating numbers with the chute. Also Stilettos, which was kinna funny since they raced one-design even though ALL of them were modified.

My only racing now is hunting down big monohulls in a breeze.

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Re: PHRF rating for 32

Postby Rufduck » Thu Nov 19, 2015 7:21 pm

A couple of other things to add to the mix...
-PHRF is regional and your rating in one region will not necessarily be the same in another.
-PHRF for a multihull is not equivalent to the same number for a monohull. Your 200 isn't the same as a Wonderful 35 mono at 200. At least not necessarily the same.
-Don't know how your regional PHRF handles ratings but PHRF-NW has dedicated multihull handicappers who take your submitted measurements, compare them to published or accepted measurements and apply speed correction factors to an established (or calculated if one is not available) base rating. This allows for hot rodded or non-stock boats.
-In our region the multihull class spans from -200 to +200 and we try to rate in 3 second per mile brackets (which by the way simply means it's a fun number that allows all of us to play together).
-After 9 years as a handicapper and a Director, I've concluded that no rating is right or wrong and only a very few actually sail close to their rating consistently.
-by the way. All multihull ratings in the NW are T-ratings...temporary and subject to review and change based on observed performance by the handicapper. It allows us to correct an obviously errant rating.
Cheers
Martyn Adams
PHRF-NW Director multihull

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Re: PHRF rating for 32

Postby thinwater » Thu Nov 19, 2015 8:03 pm

My real introduction to sailing was the ~ 1985 Hobie 16 Nationals at Cape May, New Jersey. The factory donated ~ 50 new boats, and for each race a boat was assigned at random, the sailors having 20 minutes to tune it for the conditions before pushing off from the beach. I bought my first cat (Prindle) a few months later.

In truth, the only 2 kinds of racing I like are strict one-design and open class. No excuses, no corrections, just racing.

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Re: PHRF rating for 32

Postby Phenix » Wed Jul 12, 2017 10:33 am

bg5w wrote:All of the measurements submitted are in the attachment. In re-reading it, it appears the PHRF rating is 200, and not the previously stated numbers

bob gruber
island time 32


I know that this post was from a few years ago, but I'm wondering if any other PDQ32 are now rated with multihull PHRFs.
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Re: PHRF rating for 32

Postby thinwater » Thu Jul 13, 2017 12:25 am

There is this BAMA rating:

Harris, Dave
Concerto in Sea

PDQ-32 (No Spinnaker) 231

Non-spin, self-tacking jib.

----

Interesting to note that Grubber's rating (and probably this one) are based on formulas for which the PDQ falls completely outside of the stated applicable range--in other words, the calculation is probably flawed. I'm also positive I can sail nearly 80 below that (chute, genoa, 34-feet, modified keel), given the Geminis I've passed, even with white sails, cruising load, and a dinghy. But who would want to sail a stripped cruising boat?


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