I am adding 2 winches on my 1999 340 for asymmetrical sail. Also would like to add wider spinlock clutches replacing my old one. Add possibly with deck organizers under turtle shell. Will I need to reinforce with g10. Thanks steve
Reinforcement areas
- Thread starter HD74
- Start date
Good structural fiberglass sheet will work just as well for this for half the price. You really only need G10 if you are threading it. I've used both, and structural fiberglass is generally overkill already. Just sayin'.
G10
structural fiberglass
G10
structural fiberglass
Hunter imbedded aluminum plates in the fiberglass deck layup for drilling and tapping in all the "normal" places, including the coaming pads for the spinnaker winches and cabin top rope clutches and winch mounting areas.
Again, the factory installed these aluminum plates so through bolting and backing plates are not needed. But it's your boat.
CORRECTION, SEE MY POST BELOW ABOUT DISCOVERING HUNTER DID INDEED PUT WASHERS AND NUTS ON THE ENDS OF THE WINCH MOUTING SCREWS
On my 99 H340, and all those I've read about here and on our private Facebook group for H336/340 owners,all winches and rope clutches are screwed into those plates.
CORRECTION, SEE MY POST BELOW ABOUT DISCOVERING HUNTER DID INDEED PUT WASHERS AND NUTS ON THE ENDS OF THE WINCH MOUTING SCREWS
On my 99 H340, and all those I've read about here and on our private Facebook group for H336/340 owners,
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When you drill your first pilot hole for the new winches, you'll be able to confirm the presence of the aluminum plate by the chips coming out. The spin sheets should be routed to a block on the stern pulpit and then forward to the winch. The pull of the spin sheet should be nearly horizontal going onto the winch drum so the screws should be loaded in shear and the loads transmitted into the coaming by the wide base of the winch mount. In picture you can see the block and port spin winch (covered).
@HD74
Mea culpa. Laying in the aft berth this morning looking up at the access panels, I decided to unscrew and take a look. As you can see in the picture there is an aluminum plate visible through the layers of fiberglass but as you can also see the round pattern of screws with nuts under fender washers indicate that the base of the Spinnaker winches are indeed through bolted. Clearly no backing plate beyond what is inside the fiberglass layup. What I cannot say is whether any of these winch mount screws are mounted with ONLY washers and nuts or whether the screws go into threaded holes first, then screwed on down to the underside of the deck, where the washers and nuts are installed, as I have not removed my winch bases. That extra security is good, and effectively uses the embedded aluminum backing plate
Port side ST30 spinnaker winch base mounting screws, aluminum plate visible through layup
Access to spinnaker winch base on port side at rear of aft berth
Access to the starboard side spinnaker winch will be through the large mid cockpit locker on the starboard side.
Then in the head I pulled off the access panels to the ST40 halyard winch and the turning block just outboard of it. Winch again had screws going through an aluminum plate and secured with Fender washers and nuts but the Turning block had three screws that are only secured by the threads in the aluminum plate. Also the Spinlock rope clutches are secured only by screws into the threaded aluminum plate, as I found out when I rebuilt that clutch and chased the threads with a tap before reinstalling.
Access panel in head
Starboard cabin top winch screws from below.
Access panel directly above head for attachment of the jib sheet turning block on the starboard side.
Screws for the jib sheet turning block don't have nuts and washers, so I am assuming these are threaded into the aluminum plate.
Sorry for any confusion.
Mea culpa. Laying in the aft berth this morning looking up at the access panels, I decided to unscrew and take a look. As you can see in the picture there is an aluminum plate visible through the layers of fiberglass but as you can also see the round pattern of screws with nuts under fender washers indicate that the base of the Spinnaker winches are indeed through bolted. Clearly no backing plate beyond what is inside the fiberglass layup. What I cannot say is whether any of these winch mount screws are mounted with ONLY washers and nuts or whether the screws go into threaded holes first, then screwed on down to the underside of the deck, where the washers and nuts are installed, as I have not removed my winch bases. That extra security is good, and effectively uses the embedded aluminum backing plate
Port side ST30 spinnaker winch base mounting screws, aluminum plate visible through layup
Access to spinnaker winch base on port side at rear of aft berth
Access to the starboard side spinnaker winch will be through the large mid cockpit locker on the starboard side.
Then in the head I pulled off the access panels to the ST40 halyard winch and the turning block just outboard of it. Winch again had screws going through an aluminum plate and secured with Fender washers and nuts but the Turning block had three screws that are only secured by the threads in the aluminum plate. Also the Spinlock rope clutches are secured only by screws into the threaded aluminum plate, as I found out when I rebuilt that clutch and chased the threads with a tap before reinstalling.
Access panel in head
Starboard cabin top winch screws from below.
Access panel directly above head for attachment of the jib sheet turning block on the starboard side.
Screws for the jib sheet turning block don't have nuts and washers, so I am assuming these are threaded into the aluminum plate.
Sorry for any confusion.