Trim issues - Rolling over bp/w + heavy tank

[Wibble]

Scuba keel. As seen in TV.

The proverbial "long wait" dangling below you

 

[lowwall]

Wait a minute. We are approaching this all wrong.

Just do the first 30 minutes of the dive on your back. It's very relaxing.

A suitable periscope may be helpful.

 

[AfterDark]

I am confused, I never heard of a 15 liter Aluminum tank. 15 l tanks are usually steel. Does it have a rounded bottom inside the boot or flat? If it is rounded, then it is steel. Flat would be Aluminum.

Or a magnet just sayin'

OP
Is it possible the STA isn't tight against the BP? The wingnuts are too loose, not tighten enough?

I had that happen too me one time it does flop around like that.

 

[andrethediver]

Great single tank wing though. I don't suppose the wing's getting caught up and gas is blocked from migrating from one side to the other?

I don't think so, nor have I seen this wing with cambands slots although backplate does have them: Halcyon Dive Systems

 

[andrethediver]

Of a magnet just sayin'

Is it possible the STA isn't tight against the BP? The wingnuts are too loose, not tighten enough?

I had that happen too me one time it does flop around like that.

The wingnuts do come loose on me, I have to re-tighten them every few dives. I know about the lock washers but still need to get a couple marine grade.

 

[AfterDark]

The wingnuts do come loose on me, I have to re-tighten them every few dives. I know about the lock washers but still need to get a couple marine grade.

Well that could be your problem. Confirm pre-dive they are tight until you get the SS lockwashers.

I push down hard on the BP to take up the "slack" as I tighten the wing nuts. Using a lever on the wing nut for the final tightening helps to get it tight.

 

[Eric Sedletzky]

Well that could be your problem. Confirm pre-dive they are tight until you get the SS lockwashers.

I push down hard on the BP to take up the "slack" as I tighten the wing nuts. Using a lever on the wing nut for the final tightening helps to get it tight.

Replace the wing nuts with hex nuts and use a socket or end wrench to tighten. You’ll never have a problem again.

 

[AfterDark]

Replace the wing nuts with hex nuts and use a socket or end wrench to tighten. You’ll never have a problem again.

Add little red loctite too! Or 2 nuts the second a nylock nut. How high is up anyway?

I'm constantly mounting, removing and remounting STAs DTAs, wing nuts for me are the way to go.
Once I discovered it was a problem I just made sure they are tight pre-dive, part of my routine check.

 

[Doc Harry]

More practice is all you need