[CR].......spoke lengths for Speed Six Moulton?

(Example: Framebuilding:Paint)

From: <GRIFFKS@aol.com>
Date: Thu, 8 Feb 2007 12:37:05 EST
To: classicrendezvous@bikelist.org
Subject: [CR].......spoke lengths for Speed Six Moulton?

.......can anyone help with advice on spoke length as I am building a 1960's Moulton Speed Six wheel for a friend and have only a 16" alloy rim and hub, the inner measurement of the rim is 355mm in diameter and the hub is a Campagnolo Record Track Large/Hi Flange with 70mm diameter on spoke drilling, (seems an unusual combination but that is his preferred choice), my guestimate is that they will be around a 148mm length with no dishing but is there a formula for measuring or does anyone know which length spokes I need for a double cross pattern regards Griff King-Spooner (London UK)