[PSUBS-MAILIST] Jodie B Mods

[Alec Smyth via Personal_Submersibles]

Wow, that is all both innovative and well executed! BTW if you use torsion
axles, you can make that super-low trailer road legal.

Best,
Alec

On Wed, Jul 24, 2019 at 8:23 AM James Frankland via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

>
> Hi All,
> Some pics of the modifications I have made to Jodie B over the winter.
>
> Aft tank access panel so I can easily get to the motor compensation
> tubes.  I have put 2x long tubes on with a ball valve on the end of each
> one.  I can now easily fill the motor from above throught the access port
> and just close the valves.  The long tubes dangle down low and act as the
> bladders.  I was particularly pleased with the gelcoat work as i had never
> done this before, and I had to make a flat point out of glass fibre to
> mount the hatch to and then gelcoat it to blend it into the main tank.
>
> [image: 20190722_151833.jpg]
>
> Access panel for the O2 tank.  No more scrambling around trying to lift if
> onto the bracket.
>
> [image: 20190722_151844.jpg]
>
> Made a glass fibre tube to mount the O2 tank in.  I can now just slide it
> in and out of the side panel hatch into the tube.  Was getting carried away
> with GRP work.  My first proper moulded thing.
> [image: 20190722_151919.jpg]
>
> New compensation system.  i took the risk and welded the 90 degree pipe
> nipple to the top motor casing and welded the bottom one shut.  Ground the
> connection flush on the inside.  Now there is nowhere for air to trap.  I
> can fill the motor through the top tube and close the valve.  The valve
> just connects to a bracket underneath to keep it out the way.  No more air
> bubbles in the motors.
> [image: 20190722_152033.jpg]
>
> Re-mounted the dome on a 1mm cork\neoprene gasket instead of the EPDM one
> after Hank did some experiments and found the EPDM to extrude quite a lot.
> [image: 20190722_152045.jpg]
> I also made a new super low loading trailer for taking up less room in the
> workshop.  I was hoping to be able to launch off it, but its not really
> road legal so i have only used it in the shop so far.  Note there are no
> proper axles so the bed is lower than the centre wheel hight.
>
> [image: Untitled.jpg]
>
> Regards
> James
>
>
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>
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