Tim and Andy thank you very much for the help.
I have looked at the article on Gary Hethcote’s web site and found it to be an interesting application of the Robart system. I wonder if Gary told Robart of the application of their retract system – it might make an interesting commercial for them.
Gary does refer to an article by “Clive Wadsworth published his excellent article, The Robbe U-47: A Beginners R/C Submarine? in the September 2001 issue of The Subcommittee Report” which apparently uses an Engel tank.
Again thank you and I guess now I will just have to become a member – I don’t see a way to do that electronically so I guess the pony express will be involved so “the check’s in the mail”
Keep the faith.....