US Zspar masts (especially Hunter 376)

Jul 20, 2005
2,422
Whitby 55 Kemah, Tx
It is time to let others know of my frustrations with US Zspar company. Three years ago I replaced the main roller furling drum on the mast. The old part's plastic tracks were breaking due to sun exposure and tension in strong winds and reefed main. All was good after I got the new part.

Fast forward to end of April when my mast came down at sea due to a failed cotterpin and I found myself looking for a new drum. I tasked it out to my rigger who was getting me all the parts to replace my whole rigging. It cost me $1,000 is baggage fees and a lot of effort to carry 5 bags of parts through airports but I got to Providencia with all my parts. Well, the parts that Zspar supplied would not work. The spreader pins weren't even close to the right parts. I ended up using the old pins under the advice from my rigger that they never break.

The drum though is a different story. They told my rigger and are still telling me that they don't make the part that came with the mast anymore but the replacement part will work with just a little filing of the mast to make the hole bigger. I guess they think I have a really good file because the new part is 4 inches longer than the old one. That would mean I would have to move the boom up 4 inches and have my mainsail re-cut. Not something I want to do and I would have to return to the states to have this done properly (I wasn't planning on returning for years and it's kind of hard to do without a main sail).

I ended up taking the drums apart and mixing parts. I thought I had what would work but it seems I failed. Once you start taking the drum apart the bearings go everywhere as they are terribly designed (very cheaply). I guess I didn't get the bearings back right because she sticks when furling without pressure on the sail. Sticks to bad I know one of these times I'm going to break something and that worst possible moment at sea.

So, to summerize, US Zspar will not support masts on mid to late 1990s boats which is exactly the boats that need the new parts. I am not sure what they though we would do when that plastic breaks but it is obvious they don't care about us sailors, just the sailboat makers who buy their masts.

So, I highly advise anybody from buying a sailboat with a US Zspar mast. It just may come back to bite you later like it has me.
 
Sep 15, 2009
6,244
S2 9.2a Fairhope Al
sorry you are having so much trouble....you should be in my position i have a mast and boom that are made by metal mast company who is not even in business any more....and to top it off i had to hand make a mast tang for my lower shrouds...i will say that i bet if they were still in business they would not service my mast parts as it is 35 years old...the auto industry services there products for ten years and then after that it off to the after market stores for parts.....here is wishing you luck on your repair
 
Jul 20, 2005
2,422
Whitby 55 Kemah, Tx
But sailboats cost a lot more than cars and are expected to last a lot longer. A mast maker should support the parts of the mast for at least 25 years. If you had to dispose of your sailboat every 15 years you would be pretty upset about the price of them.

I would much rather have to make a tang than raise a boom and have the sail re-cut. Once I raise that boom my sails will have to be custom made from then on out.
 
Nov 8, 2010
11,386
Beneteau First 36.7 & 260 Minneapolis MN & Bayfield WI
I'm with Woody on this.

In the big picture, there are so few sailboat made that many parts (both OEM and suppliers) are almost one-offs. Keeping parts around for 20+ years would drive them out of business. This is doubly true for complex items like furling mains.

On a 20+ year old boat, I'd be prepared to replace any system completely. Choosing a boat with less complex systems helps keep this inevitable cost down.

That being said, US Spars is a shadow of the outfit it used to when it was a division of Z-Spars.
 

Phil Herring

Alien
Mar 25, 1997
4,924
- - Bainbridge Island
This condition is hardly unique to US Spars. No manufacturer is going to gear up to run a batch of cast metal parts when they sell 5 of them each year. Like Jackdaw says, they'd be out of business.

Boats 35+ feet size have a production run of _maybe_ 500 to 1000 units (and that's at the extreme high end). There might be 200 376's out there with your furling set up, probably less. It just doesn't support the kind of infrastructure we've learned to expect from the auto industry.

It's a bummer, but it's a reality of the world we live in.
 
Dec 2, 1999
15,184
Hunter Vision-36 Rio Vista, CA.
Franklin:

Is this something that could be fabricated at a machine shop? There are many talented machinists out there. It is probably not going to be cheap, but either is a new mast. If it is made out of aluminum it "should" outlast you and the boat. :confused:
 
Sep 15, 2009
6,244
S2 9.2a Fairhope Al
just wondering here if you lost your mast why not do an insurance clame and have it replaced