To start with a quotation from the "Holland Class" thread:
QUOTE=Sam Victory;n163031]Redboat219,
Sometimes I do admire your imagination and creativity,but sorry I'm a big submarine enthusiast and I've made it very clear, breaking down the pros and cons of peristaltic pumps, so if you'd still like to use a peristaltic pump in your little submarine, go for it, if you feel it's reliable. It's true that there is no such thing as standardization in making submarines, everyone is entitled to use what they want, it's just that I prefer to accept and learn from those who have come before me and then get what I want from them and innovate. Those masters summed up their experience through years of practice is well worth for those of us who come after them to learn, if you think I have a point, please think twice.
If you still want to discuss about peristaltic pumps, please make a new thread and I will be happy to participate in the discussion, at the moment we are disrupting other people's threads.
V
[/QUOTE]
Hello!
I have been using peristaltic pumps and geared pumps alike in submarines for a long time now and the only thing i am looking at is the speed at which they are able to pump my ballast water. I had to replace one(!) Peristaltic pump because its plastic gear failed and thats it. I have NEVER EVER found a silicon or nylon or noprene tube getting brittle or rigid or whatever.
For me, it is like this: A gear pump is cheap, pumps fast, is leaking over time and introduces a watercycle open to the external pressure should there not be a valve that complicates things.There are 6 failing points( inlet tube connecting to endcap, inlet conneting to pump, pump casing, pump shaft seal, outlet tube connection to pump, outlet tube connection to ballast tank ). For any type of tank.
A peristaltic pump is expensive, pumps slow to medium volumes, presents a valve that keeps the water inside my tank and the external pressure only at the tubing between endcap and the first roller. There are two failing points, the connections to the endcap and the tank. It does not leak. For smaller tanks.
There is one Mr. Norbert Brüggen who has been selling a peristaltic pump system here in Germany for years...
I am a scratchbuilder.
My models are mostly around 1 metre in length +/-.
My first ballast system design used a gear pump and a semi-rigid ballast tank from plastic pipe.one endcap with the inlet/outlet, the other side was a piece of bicycle tube pulled over the open pvc end. In empty state, that rubber tube sat inside the plastic tube, it extended with filling of the ballast tank. Running nicely since 2004.
I am running modifications of that design with larger tanks/ motocycle tube / 6V peristaltic pumps @8,4V since 2015.
I am currently building a trim cell of 350ml with a piston ballast tank
and a 12V gear pump.
What is your PRACTICAL experience with peristaltic pumps in ACTUALLY RUNNING rc submarines?
Regards Jörg
QUOTE=Sam Victory;n163031]Redboat219,
Sometimes I do admire your imagination and creativity,but sorry I'm a big submarine enthusiast and I've made it very clear, breaking down the pros and cons of peristaltic pumps, so if you'd still like to use a peristaltic pump in your little submarine, go for it, if you feel it's reliable. It's true that there is no such thing as standardization in making submarines, everyone is entitled to use what they want, it's just that I prefer to accept and learn from those who have come before me and then get what I want from them and innovate. Those masters summed up their experience through years of practice is well worth for those of us who come after them to learn, if you think I have a point, please think twice.
If you still want to discuss about peristaltic pumps, please make a new thread and I will be happy to participate in the discussion, at the moment we are disrupting other people's threads.
V
[/QUOTE]
Hello!
I have been using peristaltic pumps and geared pumps alike in submarines for a long time now and the only thing i am looking at is the speed at which they are able to pump my ballast water. I had to replace one(!) Peristaltic pump because its plastic gear failed and thats it. I have NEVER EVER found a silicon or nylon or noprene tube getting brittle or rigid or whatever.
For me, it is like this: A gear pump is cheap, pumps fast, is leaking over time and introduces a watercycle open to the external pressure should there not be a valve that complicates things.There are 6 failing points( inlet tube connecting to endcap, inlet conneting to pump, pump casing, pump shaft seal, outlet tube connection to pump, outlet tube connection to ballast tank ). For any type of tank.
A peristaltic pump is expensive, pumps slow to medium volumes, presents a valve that keeps the water inside my tank and the external pressure only at the tubing between endcap and the first roller. There are two failing points, the connections to the endcap and the tank. It does not leak. For smaller tanks.
There is one Mr. Norbert Brüggen who has been selling a peristaltic pump system here in Germany for years...
I am a scratchbuilder.
My models are mostly around 1 metre in length +/-.
My first ballast system design used a gear pump and a semi-rigid ballast tank from plastic pipe.one endcap with the inlet/outlet, the other side was a piece of bicycle tube pulled over the open pvc end. In empty state, that rubber tube sat inside the plastic tube, it extended with filling of the ballast tank. Running nicely since 2004.
I am running modifications of that design with larger tanks/ motocycle tube / 6V peristaltic pumps @8,4V since 2015.
I am currently building a trim cell of 350ml with a piston ballast tank
and a 12V gear pump.
What is your PRACTICAL experience with peristaltic pumps in ACTUALLY RUNNING rc submarines?
Regards Jörg
Comment