Peter Volken Smidt – episode 6 – Electrifying a Contest 30
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3. A boat on dry land and removing remaining parts
Making a foundation
The old engine was built on a solid foundation for a reason. Solid polyester was connected to the rest of the hull where the propeller shaft protruded. Although the new skin appears sturdy, I think it would be a good idea to distribute the forces exerted on the hull by the new engine over a larger surface area. I considered various options, such as creating a set of hardwood frames to distribute the forces, but ultimately opted for a larger surface area using casting resin (polyurethane).
The big advantage of polyurethane is that it is self-leveling, does not shrink and does not become extremely hot during curing.
I draw and calculate the extent to which I think I'll need reinforcement and discover that with 12 liters of polyurethane, I can create a sufficiently strong foundation to transfer the engine's torsional forces to the rest of the hull. I make a template out of cardboard so I can glue a wooden bulkhead to the hull with epoxy paste as a barrier.
Time to pour the polyurethane. I quickly reread the product specifications and, to my dismay, discover that the product can only be used above 15 degrees Celsius… It's about 10 degrees Celsius outside, and it doesn't look like it's going to warm up anytime soon, even as winter approaches. Luckily, there's still an electric heater sitting idle, so armed with it, I mix the polyurethane with the hardener and pour the foundation. I heat the heater to a safe 16 degrees Celsius, and lo and behold, a few hours later, everything has hardened exactly as I'd hoped.
On to the next step, refreshing the old engine compartment and then installing the peripheral equipment.













