[PSUBS-MAILIST] K-250 side viewport and dome hatch.

[hank pronk via Personal_Submersibles]

 Hi Philipe,You have to machine the dome seat flat anyways, so adding an o-ring groove is a small extra step.Hank 
    On Sunday, September 27, 2020, 4:36:22 PM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Hi Philipe,I don't know of any submersibles that don't use o-rings as the hatch sealing method.I believe there is a danger of a flat rubber seal extruding inward under pressure.Alan 

On 28/09/2020, at 10:32 AM, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:


 Follow the plans.  The sections you reference are all related to the pressure hull and should not be modified.
Jon

    On Sunday, September 27, 2020, 04:47:54 PM EDT, Philippe Robert via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Hi all,
I currently make the conning tower. I see on the internet some k-250 with front and side viewport in addition of the acrylics dome. Some of the viewport is close to the gusset and I assume that is not possible to do a 100% weld. Is it acceptable ? Is it ok to drill hole in the viewport to put retaining bolts ?  Second question, on the blueprint, the sealing option for the hatch on the conning tower is o'ring groove. Is it possible to make better sealing like flat rubber strip or something like that ?
Best regards,
Philippe_______________________________________________
Personal_Submersibles mailing list
Personal_Submersibles at psubs.org
http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
  

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

_______________________________________________
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/20200928/d9b51aa7/attachment-0001.html>