A while back the J/30 Class received an email to the webmaster address from a company that indicates they co-own the mast section die with Hall Spars. I am posting the information below, and ask the Chief Measurer to determine if this is a valid potential supplier for the J/30 mast. If so, the BOG will follow up for further action.

To: webmaster@j30.us
Subject: J 30 Masts
Date: Fri, 20 Nov 2009 13:26:56 -0400
From: djohnson@newjsi.com

I would like to speak with the appropriate individual regarding being listed as a supplier for replacement masts. I am the mast sales representative from JSI (http://newjsi.com). We co-own the 152 section die with Hall Spars and have supplied a couple of J30/J29 replacement spars within the last year. Regards-Dave Johnson

following is the current response

You contacted us back in February requesting some additional information regarding replacement J 30 spars. We had some large projects this winter and I realized that I had never gotten back with you-my apologies. I think I mentioned that we share ownership of a new 152 extrusion die along with Hall spars. The 152 was designed to replace the Kenyon 4060. At the time when we purchased the new die, Hall was only going to get the section run in short lengths for booms as most of their concentration was in carbon for masts. They may be running some longer sections of this now. The majority of our spar business is large cruising spars rather than smaller racing masts however we are the class spar builder for the S2 7.9.

We have built a couple of J29 and J30 replacement masts. One of the issues is the Kenyon cast aluminum jib box. We ended up using the customers' existing boxes and issued a credit. We will need to fabricate a duplication of the old Kenyon piece out of aluminum plate if that part is not available. We also did the same with spreaders since to my knowledge the Kenyon SP-3 airfoil spreader section is no longer available. We do not stock any spreader section that small. Our smallest is 3.25" x .88". Dwyer makes a 3" x 1" spreader section that could be considered but not sure how the spreader stock issue is being handled. We would need to fabricate S/S spreader brackets to fit the new section similar to what Kenyon did. We normally weld aluminum ears to the mast to fit the gooseneck toggle and to fit the vang but could fabricate a bolt on S/S fitting if necessary. Again we could re-use the customers existing gooseneck and issue a credit. Upper and lower tangs would be for standard Navtec/Gibb T-ball terminals. We would mill halyard exit slots for 2 spin, 2 jib, 1 main and spin pole top lift. I don't know if there were any J30's that utilized the internal sheave boxes that Kenyon manufactured. The mast would be tapered at top to class specifications. All masts are finished in a 2-part epoxy and finished coated in Imron "Cloud White" (custom colors available at up charge). The customer should be able to use the existing mast step although it may require minor re-shaping. They could remove the old one and send it to us and we could alter if necessary.

In summary the mainstay of our business for over 40 years is replacement spars. We can work with each customer individually and re-use his existing parts if he wants to save a few bucks or supply the mast complete.
I think we still need to nail down the spreader issue. In regards to actual dimensions as a reference we have the Class J/30 Mast specification sheet which spec's pertinent info but our standard process is to go over customers old mast dimensions before proceeding as there may be some variation in some of the deatails.

I have attached a brief quote sheet. Please call if you have any questions. Our normal lead time varies 3-6 weeks based on how busy we are as we are a small shop. Shipping will have to be quoted based on location but typically we can get to most areas east of the Mississippi for $1000 or less.

Issues that need to be discussed at the next BOG meeting are te sheave box and spreaders

following is the quote for a replacement mast

Boat Type: J-30

Spar Section: JSI 152 Dimensions: 6.00” x 4.00”

Standard Mast: $5750 .
152 Spar Section. (equivalent to Kenyon 4060)
Tapered Upper Section
Welded Mast Head w/Single Halyard Sheave
Fractional Rig Sheave Box/4 Sheaves
Single Spreader
Steaming Light
Navtec Tangs for Upper/Lower shrouds
S/S Backstay Toggle
Internal halyards for 4 \Forward Sheaves 1 Aft Sheave, and Spin Topping Lift.
Welded Gooseneck Fitting/or Re-Use Bolt on Original Gooseneck
Welded Vang Fitting/ or Re-Use Bolt on Original Gooseneck
PVC Conduit to Masthead

Options (Installed)
Windex Light 61
Windex 65
Anchor Light 92

Credits
Re-Use Fractional Sheave Box $250
Re-Use Gooseneck Fitting $75
Re-Use Spreaders/Spreader Brackets $150
Re-Use Vang Fitting $50

Shipping & Packaging Estimate to North East $1000

One thing that caught my eye is the "Welded Mast Head w/Single Halyard Sheave". Our configuration has a mast crane welded in with one sheave internal to the mast, and the second sheave with a radius extending external to the mast. This would need to be corrected in order to match the original mast configuration.

The class measurer recommends the following change be made adding JSI to the list of approved spar manufacturers. JSI is the joint owner of the extrusion (with Hall spars) used to make the J30 spar.

Add to interpretation under rule 5.7.1:
Approved mast builders include Hall Spars of Bristol, RI, JSI of St Petersburg, FL and Rig-Rite, Inc. of Warwick, RI, a supplier of Kenyon Spars.