[PSUBS-MAILIST] Jodie B Mods

[James Frankland via Personal_Submersibles]

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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