Motor Bulkhead/Cylinder Union Leak
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shallow scratches the O-ring can handle. Are you confident they are not fractures the extend to the outside of the cylinder? Look at these 'scratches' from all angles with a bright, single light source -- refraction will tell you if its a crack or scratch.
DavidWho is John Galt?Comment
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Yes. From your video, It looks to me that your assessment that the air is getting past the o-ring is correct. If your o-ring does not have any nick or cuts in it and it did seal originally, it might be the resin shrank just a little and now the seal is not being made. Wrapping 4 - 5 times around the bulkhead o-ring channel with Teflon tape should tighten up that seal. Do not forget to re-grease your o-ring with silicon.
If you can cut, drill, saw, hit things and swear a lot, you're well on the way to building a working model sub.Comment
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There are no cracks, I wrapped teflon tape around the encap, inspected the new O Ring, silicone greased the O Ring, Installed the O Ring into the channel. Still getting a small leak thru the O Ring...... what are my options? Getting tired of this constant issue.Comment
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Hi all, after inability to negate the leak, Bob offered to take a look at it. I also had him ship back a new mini pump as the original rusted from the leak and was no longer functioning. Bob applied 2 Teflon wraps and a new O Ring, water testing was successful. I am now swapping the pumps. I did not realize the new pump did not include the outer board where power and servo is connected. Pain the butt, but it is working. My question is I assume I need to drill the two holes in the new pump which are present in the old pump? I assume thats how the pump gets air from within the cylinder to blow ballast?1 PhotoComment
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Hi all, after inability to negate the leak, Bob offered to take a look at it. I also had him ship back a new mini pump as the original rusted from the leak and was no longer functioning. Bob applied 2 Teflon wraps and a new O Ring, water testing was successful. I am now swapping the pumps. I did not realize the new pump did not include the outer board where power and servo is connected. Pain the butt, but it is working. My question is I assume I need to drill the two holes in the new pump which are present in the old pump? I assume thats how the pump gets air from within the cylinder to blow ballast?
DavidWho is John Galt?Comment
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2.) Unscrew the fasteners holding the bulkhead within the cylinder; remove attached devices from bulkhead; pull the bulkhead and swap the O-ring; coat the inside of the cylinder with spray silicon, slide in the bulkhead and make fast with machine screws.
3.) Sing my praises!Last edited by He Who Shall Not Be Named; 10-12-2020, 03:11 PM.Who is John Galt?Comment
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