[C38] J measurement

[dmills3 at comcast.net]

Do you have roller furling and  are measuring to the tack fitting on the drum? That seems to be the only possibility. 

Dan 



----- Original Message -----


From: "Steven Ribble" <steve.ribble at gmail.com> 
To: "Catalina 38 Listserve" <listserve at catalina38.org> 
Sent: Tuesday, January 31, 2012 12:21:00 PM 
Subject: Re: [C38] J measurement 

Measurement is from the front of the mast to the forestay tack...I could see an inch or so, but 6 seems like a lot of error. 

On Tuesday, January 31, 2012,  < dmills3 at comcast.net > wrote: 
> Where are you taking your measurement? PHRF says, "Distance perpendicular from foreside of mast line to the point of intersection of the forestay with deck". If you set a spinnaker pole as low as possible and drop a plumbob down to the the forestay attachment and take a measurement from the mast to where the plumbob is attached to the spinnaker pole it should be 15.5 feet. The measurement is not from the track on the front of the mast. You have to add the thickness of the track to get the real measurement. Also make sure the boat is level ( not bowdown or sterndown ) When building a spinnaker pole you have to take into consideration the thickness of the track the spinnaker car and the diameter of the ring. The spinnaker pole will be several inches shorter than 15.5 feet.  
> 
> Dan #108 
> 
> ________________________________ 
> 
> From: "Steven Ribble" < steve.ribble at gmail.com > 
> To: "Catalina 38 Listserve" < listserve at catalina38.org > 
> Sent: Tuesday, January 31, 2012 10:08:17 AM 
> Subject: [C38] J measurement 
> 
> Hi Folks, I'm getting a new headsail and need a little help verifying the J dimension.  Published data indicates we have a J of 15.5 feet but mine measures 15' (1980, #64)...has anyone else had this situation?  If mine is different from the rest/majority should this impact my rating? 
> 
> -- 
> Steve Ribble 
> 207/852-0971 
> 
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-- 
Steve Ribble 
207/852-0971 

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