Foiling moth setup guides and resources


If you have found this page, chances are you are looking for information on how to sail a foiler moth. Heck you might even want to know what setup you should be using for your moth. Well I don’t claim to have all the answers, but hopefully at least I can provide you with some helpful links to information written by others who do.

The evolution of moth main hydrofoils

This is an article I wrote in August 2009. It documents the history of hydrofoil development by the commercial builders in Australia. The evolution of moth main hydrofoils

Bladerider support guides

Rohan Veal, ex moth world champion and Bladerider’s International Sales and Marketing Manager has written a series of excellent support guides. Whilst they are written for the Bladerider, but most of the information applies to any moth.

  • Sailing the Bladerider is a guide for first time moth sailors and covers launching, capsize recovery and the foiling basics like takeoff, landing and height control.
  • The Racing the Bladerider is a guide that covers the racing basics. All the information on how to make a Bladerider go fast is in the Bladerider X8 — high Perfomance Racing guide.
  • The Bladerider X8 — high Perfomance Racing guide was originally for customers eyes only, but is now publicly available. This guide covers: rake and rig tension, wand and push rod settings (such as how to add lift to your front hydrofoil), sail settings (such as correct amounts of vang and downhaul) and a frame-by-frame walkthrough of how to perform a foiling tack.
  • The Bladerider X8 — Troubleshooting Guide covers topics that include: if your moth foils to high and crashes down, if your moth rides to low and is hard to get foiling, rides high then low downwind, rear foil cavitation, the wand tapping on the hull, the front foil stalling at low speed and the boat flying bow up. If you are having any of these problems it is worth a look.

The Foiling Guide

Adam May, who now “works” for Velociraptor, has written The foiling guide. This guide was meant to be part one of a series, however the rest have never been published. Chapter 1 covers: the basics of how it all works, wand system and cable linkage basics, 2005 foil dimensions and sections, setting up centerboard and rudder hydrofoil angles to get the correct angle of attack. The guide was written back in 2005, so it is starting to show it’s age, however it still is worth a read, and covers different ground that the Bladerider support guides don’t.

7 thoughts on “Foiling moth setup guides and resources”

  1. Hello Bruce,

    Thanks for sharing your knowledge about moth construction and sailing. I have learned a lot by reading your material.

    Here in La Jolla, California, Dwight Filley, Steve Ball, and I have all built hydrofoils using the Fastacraft sections as well as ones we have fabricated out of RFP as well as aluminum.

    You can see our work, as well as some others by viewing the 13 videos I have posted on the web by going to or by pasting into your URL:

    I am writing to request a copy of whatever you have that will go into part 2 of Home building a Carbon/ Foam Moth. I would like to know more about how you construct your foil sections.

    Thanks for your help.

    Ray Vellinga

  2. your site has great info. thanks.
    I am wondering if you have a copy or a link to the “foiling guide.” It appears the web site linked on your page no longer hosting that file.

  3. Hi Pete, as none of the documents are available online anymore, I am now hosting copies of all of them from this page myself.

  4. Unfortunately it seems like all the
    links on the foiling resource page goes to a page 404 on your new software testing page. I understand you have cooies of the original documents. Could you please make these available by fixing the missing links?

    Brgds, Johannes

  5. Same here. Can’t get hold of the documents. If you’re hosting them, then the links doesn’t seem to work. Is ther ea possibility to fix that? Eager to get hold of them to better understand the workings of a foiling moth.

    Thanks in advance!

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