Eddie,
Thanks for the reply, mine is the later Brish Hub Co. type which will probably have a different length of spoke to the ones in your earlier hub. I'm changing the front wheel for two reasons, one it will make my Dragonfly more or less completely standard, and two, I want to use the more powerful/efficient 8" brake that is in it at present in another project I am currently working on.
Many thanks for the reply,
Les T.