today's work

[Subculture]

What printers are those in then?

Never seen such a pump in any printer, seen peristaltic pumps in Epson inkjet printers, but they weren’t any use for a model sub IMO.

[redboat219]

They’re just diaphragm pumps, Rommel. Nothing special except the price-£££££.

Yup. Pricey alternatives but may be salvaged from dead printers.

[RCSubGuy]

Tom, I needed one for the Kilo along with the controller that i\I was finishing about 4 years ago. I contacted Bob and he was quite rude saying something in the order of why am I playing with small toys and no he didn't have them! I emailed Kevin and he supplied the pump and the pump controller! Kevin is our man! I really miss Mike Casewell and the service he provided!

I've PM'd you on this. Obviously concerning if I was rude, and even moreso if you're slandering me and my business here on my own forums. Let's clear this up.

[He Who Shall Not Be Named]

Why do you keep calling me Steve?
Thank you I will carry on and search around.
Peace,
Tom (that's phonetically pronounced Tee Oh uM) HAHAHAHAHA

Sorry, Tom. I don't know where I came up with the 'Steve'. Getting old and stupid, I guess.

[vital.spark]

Tom, I needed one for the Kilo along with the controller that i\I was finishing about 4 years ago. I contacted Bob and he was quite rude saying something in the order of why am I playing with small toys and no he didn't have them! I emailed Kevin and he supplied the pump and the pump controller! Kevin is our man! I really miss Mike Casewell and the service he provided!

[Subculture]

They’re just diaphragm pumps, Rommel. Nothing special except the price-£££££.

[redboat219]

inkjet printer pumps

https://www.aliexpress.com/item/4000176504070.html

[Subculture]

You can get them from Aliexpress for pennies. e.g. https://www.aliexpress.com/w/wholesa...etail.search.0

Sounds to me like your existing pump has a leaky valve, shouldn’t be difficult to fix, they’re simple little diaphragm pumps.

[redboat219]

Cliffhanger67 (Honorio Lim) uses micro diaphragm pumps from Parker Hannifin onboard his scratchbuilt Harpoon Sub.

[trout]

Why do you keep calling me Steve?
Thank you I will carry on and search around.
Peace,
Tom (that's phonetically pronounced Tee Oh uM) HAHAHAHAHA

[He Who Shall Not Be Named]

David,
One of my Gato pumps is not sealing (allowing free flow backwards, so need to run pump continuously to keep ballast empty. If I do not, air will work its way out. Where can I buy some of those pumps (like the ones in your TrumpeterAstute)? Was there any modifications I need to do once purchased?
Peace,
Tom

Today I can't find any of them on Amazon or Ebay. Back in the day -- when we worked for Mr. Caswell who had the buying clout for massive discounts from China -- he would order them by the hundreds, but over time I've pretty much exhausted those I had left in the bins since I retired. Sorry, not much help from this end, Steve. Good luck. They are used in portable blood-pressure machines, so if you can tear one of those apart, you likely have the pump you need.

[trout]

David,
One of my Gato pumps is not sealing (allowing free flow backwards, so need to run pump continuously to keep ballast empty. If I do not, air will work its way out. Where can I buy some of those pumps (like the ones in your TrumpeterAstute)? Was there any modifications I need to do once purchased?
Peace,
Tom

[He Who Shall Not Be Named]

Is that 2" Subdriver tailored specifically for the Astute or a repurposed Seawolf SD?

What happened to the Chinese PLAN Xia Class?

The ASTUTE will have a dedicated SD of it's own -- ballast tank volume to suit that particular boat. The XIA is alive and well and hibernaiding in a dark corner of the shop.

[redboat219]

Is that 2" Subdriver tailored specifically for the Astute or a repurposed Seawolf SD?

What happened to the Chinese PLAN Xia Class?

[CC Clarke]

Excellent crimps using the proper tool! (I used to teach high-reliability crimping in my soldering classes.) Some of our smaller pins were about a quarter that size and a PITA to get properly located in the crimper -even under high magnification!