Hi John,
the original kit is all card and costs about £300 from Marcle Models. it is built in the same way as the original full size ship except instead of steel one uses card and instead of welding one uses glue.
to convert her to radio control, we replaced the card sheets for the hull plating with the same thickness ply (0.7mm) and the same with the decks. these were then sealed and covered with very fine glass cloth and resin. the entire srtucture is still the original card. she is powered by a 7 pole motor (called a jubilee i think from model motors direct).
if you can send me an email off list i will send you some pictures of the construction earlier in the build ([email protected]).
best regards
carl tunnicliffe