Electrical Refit!

A lot of research has gone into the new set up on the Artemis Mini 438. I’ve spoken to as many skippers and electric gurus as possible. Originally the boat was kitted out with wireless tactic instruments with a Raymarine on deck pilot. The instruments and pilot are a key factor on long offshore solo racing to stay competitive. It is vital to “trim” the pilot as if it’s a sail. For this reason it has now been decided to upgrade to a full NKE system.

As well as deciding what sensors, anemometers, screens, even wiring we wanted there was a big decision to be made on the pros and cons between various ram options.

The main decision was between NKE hydraulic ram and Raymarine mechanical. The mechanical drive draws a lot less power and also has a built in clutch. This clutch means that the load is taken off the helm when the pilot isn’t on. For these reason’s it was my favourite by far. The problem is that traditionally the Raymarine mechanical drive doesn’t fit in a Pogo 2 in the conventional way.

The installation instructions are very precise; the ram must be mounted 700mm from the tiller arm while remaining perpendicular from the arm itself. Mini’s are not known for the amount of space they have down below and so this proves difficult for installation.

The Mini has twin rudders, which on a Pogo 2 are joined on deck using a double-ended tiller extension. The pilot attaches to the Starboard rudder on 438 (typical for all Pogo 2’s).

To account for the required mounting instructions I had a composite piece made up. This piece is designed to be mounted to the transom, which the ram them attaches too. This is to allow the ram arm to sit perpendicular to the tiller arm.

Measuring the required 700mm from the arm confirmed that there isn’t enough space to mount the support and ram in the traditional way.

One of the solutions for the problem is to create a metal u shape piece that connects the arm of the ram to the tiller arm. The piece would support the arm at the 700mm position then curve back and connect to the tiller arm. It is very important that this piece is very rigid as any loose part results in a loss of accuracy and performance.

Looking into further options and speaking to fellow Mini sailor Ian Lipinski we looked into the idea of mounting the ram in the middle of the boat. We had initially ruled this option out, as this is where the liferaft ramp and escape hatch are located. With a bit of testing and configuration we have now found the ideal positioning underneath the ramp.

Fellow Mini sailor Diane Reed helped me with the installation of this composite support piece, spending a day laminating it to the hull and transom in the required position.

With everything in place TEEM have now completed all of the installation and the boat is ready to get out on the water for testing.