Author Topic: Custom Phrf Sails  (Read 106 times)

Gray Shannahan

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Custom Phrf Sails
« on: July 31, 2022, 03:04:48 PM »


Just got these made by Jenkins and they are awesome! I'm the smallest boat in the fleet but no problem crossing tacks and beating up on J29's. Has anyone else on here gone with custom sails? What kind of impact did it have on your rating? Our local PHRF on the Chesapeake won't budge on the 3 point rating on my carbon mast, Mast + Sails took a 10 point rating. Does that sound fair?

I would love to get into one design at some point. Not able to travel much with young kids right now. Would love to get a fleet going on the Chesapeake!

Travis Gregory

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Re: Custom Phrf Sails
« Reply #1 on: August 02, 2022, 01:35:42 AM »
Very nice!  8)

What is the break down for the 10 second hit (how much per sail)? 

Guessing 3 seconds or more for the square top. Did you change the jib size as well as the spinnaker?

TimPorter

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Re: Custom Phrf Sails
« Reply #2 on: August 02, 2022, 05:50:47 PM »
On Lake Norman a boat went with the oversized spin and slightly larger and laminated jib and got hit 12 seconds per mile.  Often times the one design boats in the fleet would win boat for boat.  The boat eventually switched back to one design. 

Not sure which carbon rig you have but the three rigs should all be considered one design.  Not sure you should get a rating knock if you have the approved rigs.  From my experience I don't think the carbon rig is any better.  If I had a choice of the three rigs, in most conditions, I would pick the aluminum rig. 

If you pick an event on the bay I will do my best to recruit the Lake Norman crowd to come up.  I would also encourage you to come down to Lake Norman for some of our events.  We have over 20 boats on the lake now.  CKOD in November and Mid-winters in March are the two best events. 

Gray Shannahan

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Re: Custom Phrf Sails
« Reply #3 on: August 03, 2022, 03:11:10 PM »
I went with the standard jib size as I was concerned about messing with how the boat points, etc. We had a webinar last year that Jim Antrim joined and I asked him what he thought about using modified sails. He told me that it's a no brainer to go with the square top main with a carbon mast. He's the one that convinced me to do it.

I have the C-Tech mast. Which if anyone has any tuning advice for, i'd love to know. I've been following the tuning guidelines that I found on the forum for the Forte mast however I've read on here that the C-Tech mast does have more bend.

Thanks for the offer to come up to the Bay, I'll keep my eyes out for a good regatta. Midwinters at Lake Norman might actually be doable, it's now on my radar. I have a one design main and jib but not a spinnaker maybe I could bum one off someone if I came down :)

Here's my PHRF certificate.



Also if anyone is curious, here's the mainsail design:


Steve Shaw

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Re: Custom Phrf Sails
« Reply #4 on: August 03, 2022, 03:32:31 PM »
Looks cool.  The CTech rig is certainly more bendy than the Forte.  In fact all our testing showed the CTech to be almost identical bend characteristics to the Aluminum.  The one difference being that the Carbon rig doesnít pump fore and aft like the aluminum in waves and puffs.
Personally I am not a fan of the square top main as I believe it doesnít transfer the sheet loads to the masthead as much since the square top would most likely not be sheeted as hard in breeze.  That I turn leads to headstay sag.  I also think it induces more load and twisting torque downwind at the unsupported masthead.  The Carbon rigs are much better at controlling all these variables, however I donít believe the class would want 3/4 of the boats with aluminum rigs to be in harms way. 
Safety Third!

Steve Shaw

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Re: Custom Phrf Sails
« Reply #5 on: August 03, 2022, 03:38:22 PM »
Here is what we saw.