Re: [PSUBS-MAILIST] K350 Parts

["Joseph Perkel" <joeperkel@hotmail.com>]

Dean,

Many times I have thought of this as well...(Why not use small shots of air fore and aft for trim?)...seems simple enough...... But, the MBT's are ambient......

The problem is the dynamic nature of the bubbles with depth changes. Here you have the vents closed to keep the the bubbles where you want them and that's where the trouble starts. Start to change depth significantly, and so change the size of these bubbles...larger (ascending) smaller (descending)....there so there goes your fine trim and control.

It's best for these types of trim systems to be hardened.

Joe

---

From: Recon1st@aol.com
Reply-To: personal_submersibles@psubs.org
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] K350 Parts
Date: Sat, 30 Dec 2006 12:03:57 EST

I have read many posts discussing secondary bt

for fine neutral control.

 

My question is can't the mbts be used for this?

It seems to me it could be done by using a simple

method.

 

my thoughts are to put 2 inline control valves on the

hp air line. the valve closest to the mbts would be left

open and the 2nd one would operate normally. Then

when fine control is needed, you would close the front

valve, open the back valve then close it. This would allow

a small amout of hp air to be delivered giving fine tuning.

the same could be done on the air release side.

 

The amount of control would be the volume between the two

valves.

 

So am I ignorant again? am I missing somthing here?

 

just a planning away

Dean Ackman

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