I sent an email to
J/Boats to see if they have any information on this topic. Here is the reply I got from Alan J.
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Dear Jeff,
According to the original Kenyon Mast blueprint #AS573, spinnaker pole track length is 4' 0" and the location of the bottom of the track is 8'4" above 'O' Datum (bottom of spar). This is 6" below the top of the lower black band on the mast.
There is no indication on the print of any other installation location or track length however there are a number of revisions made that are not accounted for on the print for which there is no corresponding documentation. Kenyon (Rig-Rite?) may still have this in their files somewhere?? I also searched archived J/30 records and files without finding anything on the subject. I then looked at photos of J/30s in the archives and found a few variations of this detail.
Original J/30s appear to have had a single stainless ring welded to a plate held to the front of the mast with four bolts (J/24 style) for end-for-end jibes. This was replaced with a long spinnaker track that appears to extend to just above the deck (curved type??), this was evident in three very dated images that I could find. The later model J/30s were then equipped with a shorter 4' 0" "T" track shown on the Kenyon print. This is evident in later brochure photos.
I'd recommend a call to the Rig Rite folks to see what they may have on file... I found a link to their web page for J/30 replacement mast parts as follows.
http://www.rigrite.com/kenyon/Kenyon_One_Design/K_J30_spars.html Sincerely,
Alan Johnstone
J/Boats, Inc.
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I have another note to Hall Spars on the topic and have to order something from rig-rite so I'll call them tomorrow. Stay tuned.
-Jeff
