Hi Simon,

Yes the prop is a 4mm thread.
I bought all the parts i have from Hobby City on Quey street Waterfront area. It is a really good model shop
but they don't specialize in boats so they have a reasonable boat selection but not huge. This means that some of their staff
don't really know how to help you. I was just wondering where you buy all your parts. I'm assuming you go to
High Performance Boats which i know is on the north shore but i have not been there yet as it is further to go than the waterfront.

So basically is a drive dog a connector that converts a 4mm shaft head into various sizes so that you can fit other props? anyway
your help. :-)

Cheers, Conor