left post/right post selection/routing...

[rhwestfall]

Okay, I understand the reason for the long hose on the right post to allow for maximum effective use of the long hose, and the resulting need for the back-up on the left, but can someone please explain the logic of wing inflation on the right side, and dry suit on the left? Wouldn't a cleaner approach be utilizing the left post and a short hose to the wing LPI, and the right post going down the right side (under arm) to the DS inflator?

Just curious....

Fire away

 

[Diver0001]

Well....

Here's the thing. It all starts with where you decide to put the long-hose.

Since we've collectively decided to put the primary on the right in order to limit the risk of a roll-off in an overhead, then the secondary goes on the left.

Primary buoyancy is, therefore, on the right for the same reason that the primary reg goes on the right, to limit the risk of a roll-off. Ergo, secondary goes on the left.

Some people give other rationalization for why the primary stuff goes on the right. The simple fact is, it all has to go *somewhere* so avoiding a roll-off is as good a reason as any. In reality, I think the "right hand primary" basically comes down to a much more fundamental reason.... most people (about 88%) are right handed and therefore find this post easier to shut down in the case of a free flow.

R..

 

[rhwestfall]

decided to put the primary on the right in order to limit the risk of a roll-off in an overhead

I don't understand how post selection relates to roll-off....

 

[Doppler]

In the unlikely event of a freeflow into the wing, one can open the dump and close the post at the same time... that at least is the argument made to me by a guy called Jarrod Jablonski... but this was before the formation of GUE... perhaps things have changed.

For the record, I explained to him that my set up was different because diving in very cold water, I wanted to split the gas delivery workload at the beginning of EVERY dive between posts (breathing off the right wing off the left) to help minimize the risk of freeflow since the workload on first stages tends to be heaviest at the start of a dive. To "manage" a freeflow, I could disconnect the LP hose and manipulate the post.

He nodded his head, explained he was not much of a coldwater diver, and we then went diving.

 

[rhwestfall]

are you saying the valve rotation in conjunction with forward swimming motion?

---------- Post added April 4th, 2014 at 08:08 AM ----------

For the record, I explained to him that my set up was different because diving in very cold water, I wanted to split the gas delivery workload at the beginning of EVERY dive between posts (breathing off the right wing off the left) to help minimize the risk of freeflow since the workload on first stages tends to be heaviest at the start of a dive. To "manage" a freeflow, I could disconnect the LP hose and manipulate the post.

That and shorter/cleaner house routing were the basis of my thinking too....

 

[Diver0001]

In the unlikely event of a freeflow into the wing, one can open the dump and close the post at the same time... that at least is the argument made to me by a guy called Jarrod Jablonski... but this was before the formation of GUE... perhaps things have changed.

I still hear some people parroting this, but it makes no sense to me. In reality one would simply disconnect the inflator hose (normally using two hands to do so).

R..

---------- Post added April 4th, 2014 at 02:38 PM ----------

are you saying the valve rotation in conjunction with forward swimming motion?

That's the idea. But like I said, it's a rationalization. The far more likely underlying reason (the 1000lb gorilla that nobody mentions) is that the vast majority of people are right handed.

R..

 

[rhwestfall]

The far more likely underlying reason (the 1000lb gorilla that nobody mentions) is that the vast majority of people are right handed.

yet another thing I don't seem to "conform" to...

 

[pisoiu]

Primary buoyancy is, therefore, on the right for the same reason that the primary reg goes on the right, to limit the risk of a roll-off. Ergo, secondary goes on the left.

Ok, but I do not understand one thing. If a roll off occurs on left post and it gets shut, this usually happneds near the ceiling if I'm not mistaking. That means you already have a problem, too buoyant. So why one would need to pay so much attention of temporary loosing gas suppy in a BCD/wing when there is already too much gas in it?

 

[rhwestfall]

Ok, but I do not understand one thing. If a roll off occurs on left post and it gets shut, this usually happneds near the ceiling if I'm not mistaking. That means you already have a problem, too buoyant. So why one would need to pay so much attention of temporary loosing gas suppy in a BCD/wing when there is already too much gas in it?

not necessarily - trying to get through something narrow could have the same effect...

With an alternate buoyancy (DS), I'm trying to understand the need for the configuration. Sure, there can be a scenario for practically anything....

 

[Doppler]

Ok, but I do not understand one thing. If a roll off occurs on left post and it gets shut, this usually happneds near the ceiling if I'm not mistaking. That means you already have a problem, too buoyant. So why one would need to pay so much attention of temporary loosing gas suppy in a BCD/wing when there is already too much gas in it?

I gave up looking for logic from people who do not seem to understand the difference between mass and the effects of buoyant force on apparent weight, and because of that lack informed me the clips on my stage bottles were too big.