Jim drove down from Medford to take a Delta cruise on Ravenswing, to start getting used to the navigation and safety gear. Tuesday we had a great sail around Treasure Island. The wind went light by the Bay Bridge and we were hoping it would pick up to get us back to Richmond sans engine. Careful what you wish for in SF Bay. Ten minutes later I was regretting not taking a reef. It was a wet and nasty ride across The Slot, and what became more boat trials. Found three things that need big changes. 1) the mast rotation control arm bent its 3/8″ in-mast mounting bolts. It’s now in the Bay Marine metal shop getting upgraded. There will be five attachments to the mast, instead of the original two.
2) The rudder gudgeon tower was flexing side to side, and actually began cracking some of its fiberglass laminations.
I motored up to Napa Marina early Sunday morning, and today began the strip down for a reinforcement rebuild. This all happened because we didn’t build the kick up box in Farrier’s plans. He wrote that a permanent bond to the hull of the gudgeons base is fine, but the plans didn’t detail it. I didn’t consider the lateral forces the rudder would transmit to those gudgeons, thus the flexing (BAD) post. For any F39 builders, I’ll say that the lamination schedule in the plans is INSUFFICIENT for these side loads. Please feel free to write /discuss this, as sadly there’s no Ian Farrier to question to anymore. In the coming days we’ll see how this fix goes.
3) the emergency escape hatch was forced OPEN by the short chop waves some time during that blast reach Tuesday. As the wind subsided past Angel Island, the boat felt sluggish so I went below to look around. Holy Shit, the damn hatch was open and waves had been firehosing in. It screwed up the new fridge (yet to diagnose), soaked the aft cabin and generally brought somewhere in range of 50/100 gallons aboard. Thank goodness it was (like the 2017 mast), very close to our marina. Wednesday was written off for boat cleanup. Salt water got everywhere. Yuck.
The hatch was purchased by Howard the hull builder and I had checked it off the list as done seven years ago. But looking closely at it now, it’s dangerously misused as a hull-side hatch. Should only be a light duty cabin top install. The two plastic legs barely grab the frame. It’s gotta go. Skateaway Designs provided us the drawing for a proper ocean safety hatch, and I’ll be relieved to NOT see the water racing by anymore. That stuff is cute for watching fishies in a pretty anchorage, but No Thanks at 20kts and nasty weather. Over the weekend i started making carbon and foam parts.
The square piece will get bonded to the hull where the old glass hatch was. There will be an outer door that’s flush with the outside of the hull, and an inner door panel facing into the cabin. Kieth, that third photo down shows you the perfectly flat stopper ring that will take the neoprene for the outer door panel. Pretty happy how that’s looking.
PS – the stack of triangles is a teaser of some new shaping for the rudder gudgeons tower.
So this is Ravenswing’s third haulout since her marvelous launch day 3 years ago. Today we tried out the rail trolley at Napa.
The veteran manager Tom hadn’t done a Multihull backwards there. It was a little tricky but now the stern work area is easy to get to. Otherwise it would have been WAY up in the air hanging over the steep ramp.
I’m telling you guys – seriously – I spent a few hours looking at everything that makes her go, asking the gods, “what else”? needs attention before heading south. We’ve redone the daggerboard, rudder, Autopilot, mast, boom, tweaked sails and running rigging, continue to refine electrical and plumbing. I think these current three reach the end of my worry list. But go ahead, anyone who’s sailed with us, do you have any concerns for us? Let’s get all the bugs out now.
Good thing she is not an airplane
Aye. Identify the weakness before it becomes a fault, there’s the trick. One exercise that haunts me is that you have to leave the cockpit and crouch on the scoop to disengage the auto pilot. No problem when all is well. Just sayin…