Keelboat news and development: PY Handicap of Platu 25

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PY Handicap of Platu 25

Printed From: Yachts and Yachting Online
Category: Keelboat classes
Forum Name: Keelboat news and development
Forum Discription: All the latest developments for yachts
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=5390
Printed Date: 10 May 25 at 10:06pm
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Topic: PY Handicap of Platu 25

Posted By: Corms
Subject: PY Handicap of Platu 25
Date Posted: 02 Apr 09 at 7:17pm

Can anyone tell me what the handicap of a Platu 25 is please.

Cheers

Corms

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Neil

Replies:

Posted By: Oli
Date Posted: 02 Apr 09 at 11:26pm

at a rough guess 925

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Posted By: garth weaver
Date Posted: 03 Apr 09 at 7:25pm

seems a bit generous to me, I would suggest 900 as J80 is 880 with IRC of .970 and B25 has IRC of .960.

Posted By: Corms
Date Posted: 03 Apr 09 at 10:16pm

Last year sailed with a PY of 892 but thought it was slightly harsh.

Corms

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Neil

Posted By: garth weaver
Date Posted: 04 Apr 09 at 8:44am

I have a projection 762 with IRC of .964. We sail off 880 at our local club, which is a bit harsh and 905 at another club, which is a bit generous. B25 off 900 is about right.

Posted By: chic
Date Posted: 14 Apr 09 at 10:45pm

There was a Platu 25 racing on the Forth with a handicap of 892... It doesn't sound far wrong.

Posted By: Beeste
Date Posted: 18 Apr 09 at 11:03am

There are thee Ben 25's race on Windermere in a mixed fleet on PY 0.925. Full list of PY's can be seen in results on Windermere Association web site www.windermere-cruising.org/OPEN6.HTM

Posted By: Corms
Date Posted: 21 Apr 09 at 10:11pm

The Windermere PY for Ben 25's is 925, I would be happy with that,, if I can persuade the race committee.

Corms

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Neil

Posted By: chic
Date Posted: 21 Apr 09 at 10:50pm

Don't let them see the Byron Software handicaps list then, it places the Platu 25 at 862!

We raced against one from time to time - it was hugely quick in light winds.

Posted By: Corms
Date Posted: 23 Apr 09 at 10:58am

Hi Chic

I have never heard of that handicap sytem, probably just as well by the look of the handicap.

When or where do they use this system?

We actually used 892 because of the boat on the Forth called Warthog, I think.

It is hard to sail to in mixed fleets.

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Neil

Posted By: chic
Date Posted: 06 May 09 at 1:12pm

Hi Neil,

As far as I know Byron calculate an approximate PY figure from hull and
sail data, in much the same way as IRC works. If you google 'Byron
Cruiser Handicaps' you shuld find it.

I was indeed referring to Warthog which in light winds would achieve well
under 892. They don't seem to like breeze, though. They sail a good deal
slower in anything over about 16knots. It is hard to sail in mixed fleets,
but every boat has its day and from what I've seen Platu 25 works well in
light to average winds. We're still sailing off 880 in the Projection which
unfortunately won't be changed because we achieve pretty much the
same! The P762 is slightly heavier but sail areas aren't totally different.
The Platu 25 has a much rounder aft section which makes it relatively
unstable in a blow.

Posted By: damp_freddie
Date Posted: 02 Jun 09 at 2:37pm

The "schplatu" as it has earned itself a name is indeed developed for the light winds.

It was made for thailand, phuket and so on, where breezes are moderate as were budgets- hence a steel keel.

But given you are either from a dinghy or fast sports boat background and you can tune the rig on and off the water, it will be a blast in 18knts plus.

The small kite is pretty useful when it blows , but be careful with the main with a reef in it- the Norths stock OD mains are allegedly weak if over tensioned- reef it down, velcor strop it to the boom, and then put some depth back in it's foot using the reef line like an outhaul.

Posted By: Corms
Date Posted: 03 Jun 09 at 10:20pm

What size is the small spinnaker?

Where would could you buy a 2nd hand one?

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Neil

Posted By: damp_freddie
Date Posted: 09 Jun 09 at 2:41pm

Originally posted by Corms

What size is the small spinnaker?

Where would could you buy a 2nd hand one?

The one on Rebell was about 12 sqm smaller than the big one, and in 3/4 ounce - stock from Norths so there should be some knocking around. It was a lot flatter though, so suited to reaching as well.

Norths also have an assym' design for the platu for the standard pole.

If you measure the leeches and the midgirth of the large kite, subtract 50cm from both then you could go out and find another boats spinnaker which might fit- guess an Impala or a 762 or an FC8m heavy kite.