I second that,
I've read allot about using a jet ski type squirt drive in Pat Regan's now dead forum. But it's great to see one that is just about ready to fully test. As I recall Pat was using an older Kawasaki Jet Ski squirt drive powered by a Kawasaki two stroke motor, when on the surface for his mini Nautilus. The parts came out of a Kawasaki Jet Ski used in the movie Water World that was filmed mostly off the Big Island of Hawaii. Then for submerged running, a battery powered Minn Kota motor with it's own prop is used. I wouldn't want to be stuck in that small of a hull with a two stroke motor running for all the noise. The motor might be able to be walled off, and one of the good exhaust silencers that are now used on ATV's installed.
The articulating rear control surfaces on the R300 is also pretty rare to see on PSUBs from what I've seen. I last saw it being used on the Nessa Sub, but with the prop being attached to the end of the assembly, instead of the outlet of a squirt drive and control surfaces. I've been working on a couple of PSUB designs for a couple of years now that have some cross over with those two designs used on the R300. So I hope to learn from your trials and success if you don't mind Cliff.
http://www.frappr.com/?a=viewphoto&id=2628470&pid=6983195
Cliff do you have any more pics of the molds, and the lay-up of the molds you used to make the final fiberglass outer hull? What type of resin did you use for the molds and the final hull? I've been planning on using a low viscosity Vinyl Ester resin like, Hydrex 33253 and infusion molding the final parts. I want to use this type of Vinyl Ester resin so it will bond well will my Vinyl Ester based gel coat, to prevent blistering.
Do you think the epoxy resin you used to bind your micro and macrospheres together, bonded well with the the inside of the outer fiberglass hull? I didn't see any main seams on your outer hull. I would venture to guess that you made it in two halves, top and bottom respectively, and then bonded them together. How did you center and attach the outer hull to the inner hull in preparation for filling the annulus space with syntactic foam? I didn't see much in the way of connection flanges on the steel inner pressure hull, to attach the outer fiberglass hull too.
You made a pretty boat, but you already knew that, didn't you.
Best Regards,
Brent Hartwig
From: Brent Shaw <drydivenz@yahoo.com>
Reply-To: personal_submersibles@psubs.org
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Cliffs - R300
Date: Mon, 16 Jul 2007 15:44:45 -0700 (PDT)
>
>Cliff
>
>Excellent to see someone thinking outside the square
>and taking on the challange of designing and building
>something that isn't or hasn't been proven in the
>past.
>
>Brent - nz
>
>
>
>
> ____________________________________________________________________________________
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