Plate positioning on back

[cool_hardware52]

I raided our equipment room and got my hands on a 10,4L Luxfer aluminium cylinder and a 10L Faber steel.

The Luxfer's Divetek valve is ~70mm (~2,8") from top to where it is threaded into the tank and ~170mm (~6,8") from top to the shoulder of the tank.

The Faber's valve is ~60mm (~2,4") from top to where it is threaded into the tank and ~140mm (~5,6") from top to the shoulder of the tank (although this was harder to measure because it too has an irritating net).

So I guess if I have no luck adjusting the harness (which I still intend to spend a lot of time doing) then I'll just switch to a 10L steel instead of a 12L. I can deal with the head issue _if_ I want to do some deep dives and need the extra air.

Good,

You have a couple of alternatives to try. Let me know how it works out.

Tobin

 

[4sak3n]

Well, I seem to have resolved my issue ... I think.

To cut a long story short, I decided to start from square one again and rig up my harness according to the recommended 'norm' (shoulders 3 finger widths loose, plate just below vertebrae etc) so that I have a baseline to work from.

I swapped out my tank for one with a slightly shorter valve as well.

And then on my dive I had no issues! I don't know whether it was the shorter valve, whether I had not gotten the 'recommended' fit right the first time or whether I just started feeling more comfortable with the idea of the first stage touching my head (because of all the reassurances that this was normal) but I didn't get creeped out by my tank anymore.

I suspect that it was a combination of all the factors. I could definitely feel the tank if I pushed my head back enough but it wasn't there all the time nor was it too much of an irritation.

Anyway, I'm now going to dive a number of times without changing ANYTHING and see if the situation stays 'fixed'. Knowing my luck it won't because I only got it right by fluke and won't be able to reproduce it. But hopefully I will get lucky and will have done things correctly so that the dives will go as smoothly as my last one.

Wish me luck.

 

[Colliam7]

Well, I seem to have resolved my issue ... I think. ... Anyway, I'm now going to dive a number of times without changing ANYTHING and see if the situation stays 'fixed'. ... Wish me luck.

Good news, thanks for the follow-up, post back to this thread after you dive the rig for a while, to let us know how it turns out. And, since you requested it, 'Good luck!'

 

[cool_hardware52]

Well, I seem to have resolved my issue ... I think.

Great!

I suspect that it was a combination of all the factors.

Probably each played a part.

Anyway, I'm now going to dive a number of times without changing ANYTHING and see if the situation stays 'fixed'.

Good Idea. Good luck. Time and familiarity with new gear will only help.

Tobin