Hey all. i thought of an idea for sealing a leaking through hull. What about machining a very fine taper onto the outside of the shaft. Then threading the inside of the shaft after it exits the through hull and fitting a wing nut and spacer? Then if the seals leak, you could screw down the wing nut which would pull the taper into the gap and jam it shut? What do you think? Would pressure push the taper in anyway under normal conditions? im thinking of doing this for the drop lead controlls, variable controll and rudder. Regards James ----- Original Message ----- From: Smyth, Alec [mailto:Alec.Smyth@compuware.com] To: personal_submersibles@psubs.org Sent: Mon, 25 May 2009 21:30:02 -0400 Subject: RE: [PSUBS-MAILIST] Precision prop shaft There shouldn't be friction, the shaft rotates freely. I do however plan to leave it out in the sun on the driveway when we get some good hot days, just in case hot temperatures are an issue. Though in the water that would be rather unlikely. ________________________________ From: owner-personal_submersibles@psubs.org on behalf of Jon Wallace Sent: Mon 5/25/2009 8:42 PM To: personal_submersibles@psubs.org Subject: Re: [PSUBS-MAILIST] Precision prop shaft Nice job Alec. One question I have given the close tolerances. I wonder if friction caused by rotation of the shaft will cause expansion of the shaft such that it binds or locks up. Any thoughts on this? Jon ************************************************************************ ************************************************************************ ************************************************************************ The personal submersibles mailing list complies with the US Federal CAN-SPAM Act of 2003. Your email address appears in our database because either you, or someone you know, requested you receive messages from our organization. If you want to be removed from this mailing list simply click on the link below or send a blank email message to: removeme-personal_submersibles@psubs.org Removal of your email address from this mailing list occurs by an automated process and should be complete within five minutes of our server receiving your request. PSUBS.ORG PO Box 53 Weare, NH 03281 603-529-1100 ************************************************************************ ************************************************************************ ************************************************************************