[PSUBS-MAILIST] Retractable Reel

[Alan James via Personal_Submersibles]

James,why do you want to drag your dog around behind your submarine?   I have thought of having a float that I can send up when ascending,to alert surface boats to my position. The idea is to send it up from about the 20 - 30ft mark, & have  a retracting mechanism to wind in the slack.There are plenty of divers reels to utilize as a starting point. Lasse's threadon using a pneumatic driver got me thinking that a simple pneumatic turbinewith a feed pressure of around 4psi would pull any slack line in & let a largeenough float pull it out. It may be a bit more complex in your scenario, as you will have the force fromdrag to consider.Other thoughts are to start with the divers reel & copy a retracting mechanismfrom somewhere, but using a 316 stainless clock spring of the right size & torsion.Let us know how you get on.Alan


      From: James Frankland via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
 Sent: Tuesday, September 13, 2016 11:35 PM
 Subject: [PSUBS-MAILIST] Retractable Reel
   
Anyone got any ideas for a retractable reel?  I need to have a SMB but I don't want rope trailing around all over the place. I was thinking of something like one of those automatic retracting dog leads.  So it will auto wind up and down.   Ive searched for something suitable off the shelf but cant find anything. I don't have a through hull available for a manual winding one. Im temped to use 2 of those dog leads.  One on the bobber, one on the boat with them joined in the middle.  That would give me about 20 meters.  Of course, they would disintegrate after the first use, but ive got several old ones at home that could be sacrificed. Or, some sort of retracting device that could be put inside the bobber? any thoughts?

regardsJames
_______________________________________________
Personal_Submersibles mailing list
Personal_Submersibles at psubs.org
http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles


   
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20160913/cb2c1a6d/attachment.html>