I am looking for some explaining from people that own a D&E miniature 3.5 WTC.
I got this, fully assembled, so I am going through the motions of checking everything out. Several questions stick out that I would like clarifications.
1. D&E WTC's appear not to have end cap tightening screws. (???). What I am talking about are screw rod assemblies to pull both ends together tight. As an engineer, this puzzles me a bit. Does hydrostatic pressure do a good enough job of keeping the end caps on ?
2. The vent valve / Equalization valve. This relates to No. 1 in way. I understand what this valve's purpose is. But, if one where to siphon air OUT of the compartment, the negative pressure would help make a better seal with the endcaps. Any comments on this one ?
3. Ballast section. This particular WTC has two sections. It is identical to the one shown in Issue #40 of the Sub Report used in a 1/96 Ohio class sub. It has two compartments. One equipment, the later ballast with an adjustable piston on the ballast used to help with establishing the volume of water to be used. There is a float foam assembly that is connected to the propel / valve tank / servo actuator (what I call in a nice way, the toilet bowl system). My question is: with no vent valve, how does the D&E WTC 3.5" ballast section flood ?
There also seems to be a set screw on the top of this WTC with some potting silicone. It looks like a tension adjustment screw.
I hope someone or some folks can answer these for me.
This WTC is very nicely designed by the way. I particularly like the unique adjustment solution of the APC. Nice job by Dave !
Edited By MIT on 1074446494