More from my IOW Visit — The Engines Are In
To keep these posts manageable, I decided to break the content into smaller pieces. Here are a few more highlights from my visit to the Archipelago boat shed last week.
The first item is the big one: the engines are in. This is no small thing — it's a major milestone. They're big and beautiful. As you can see from this picture, the Yanmar 440hp hybrid engines are considerably bigger
than the 125hp units that are going in the A40 and could have gone in Nomadicat. When I talked to the eMotion engineer, he suggested three reasons: 1) it's a heavy boat and you may need to get somewhere quickly even in the Med, 2) your battery charging time will be minimal, and 3) (and the clincher) since this is an expedition yacht, the resale value of the 440s will be significant if future buyers are expedition-minded. There are still issues with the hybrid side of things. The electric engines are attached to this whole engine block. However, the eMotion folks have still not delivered on some of the electric components needed to wire them and use them. Hopefully we'll receive them prior to sea trials slated for August, but no guarantees.
It was no small feat getting them into the engine rooms,
but fortunately there is still plenty of room
around the engines after installation — not so much with the A40.
You can see from this diagram
how the gearbox is actually oriented toward the bow, with a rigid drive shaft running back to the propeller. I thought this was odd at first, but then realized that any other angle to the propellers would be too severe.
An interesting highlight was watching all of the external welds be tested. This is a laborious process: the weld is painted with a red dye, then sprayed with a fine, chalk-like powder.
If there is even a pinhole, the red dye is drawn out and the weld repaired.
Another highlight of the IOW trip was having our Brompton 12-speed electric bikes delivered. These are intended to be our primary means of getting around once we're ashore — other than walking, of course. I was really impressed with them.
Each weighs about 35 pounds with the battery pack, and they fold up incredibly small — we even brought them on the local bus.
They are impressively energy efficient: Thomas and I climbed a significant hill up from the Shanklin beachfront along the English Channel and had gearing to spare. They're a great addition to Nomadicat.