Eurobusker
Midshipman
Posts:22
 | | 23 Aug 2009 10:28 AM | | Here's a cheap idea for making the pump filter! 
the motor is in fact a windscreen pump from a car! dont forget to cut off the handle from the tea strainer | | | |
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JohnmCA72
Commander
Posts:701
| | 23 Aug 2009 11:04 PM | | How is a pump a weapon?
JM
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Kotori87
Rear Admiral (RADM)
Posts:2343
| | 24 Aug 2009 12:21 AM | | Move water at a high enough velocity, concentrated at the right spot on the target's hull, and...
Seriously, I have considered installing a rotating pump outlet in certain particular ships, as part of my evil plot to sink another boat with an "unarmed" transport | | | There are 101 different types of people: those who understand binary, those who don't, and those who just can't count... | |
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Darren Scott
Veteran
Captain
Posts:827
| | 24 Aug 2009 02:42 AM | | That's a neat idea! Just need to make sure you use a plastic or stainless strainer, the cheap plated ones would corrode away quickly. | | | Have Battleship, will travel...... | |
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Eurobusker
Midshipman
Posts:22
| | 26 Aug 2009 01:00 PM | | Posted By Darren Scott on 24 Aug 2009 02:42 AM
That's a neat idea! Just need to make sure you use a plastic or stainless strainer, the cheap plated ones would corrode away quickly.
hahaha I found a chinese/arab shop in paris who sell 3 for 2€
plastic or steel if folk need to know I got plastic ones cause they fill in all the gaps when slightly squashed. and they weigh nothing | | | |
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Windrider0275
Ensign
Posts:115
| | 26 Aug 2009 06:11 PM | | Interesting idea. Is this what you are using and did you have a picture of the finished item?
Steve | | | |
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webwookie
Lieutenant
Posts:377
| | 26 Aug 2009 10:14 PM | | I used half of a ball-style tea infuser for the pump inlet strainer on my USS Gearing back in the day. With the entire ring and latching mechanism retained, cleaning it out only took a thumbflick followed by a brief squirt from a reagent squeeze bottle. If I'm not mistaken though, most windscreen washer pumps are gear pumps, which would make them positive displacement (prohibited by the rules of most clubs if I'm not mistaken) and not dynamic pumps. | | | FNS Mogador (1/144): laid down
Russian Destroyer Kapitan Belli (1/144): laid down
USS Gearing, DD-710 (1/144): stricken
USS Chevalier, DD-805 (1/144): approved
V-108 (1/96): under consideration
Z-25 (1/144): fitting out underway | |
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Iceman
Rear Admiral (RDML)
Posts:1220
| | 26 Aug 2009 11:02 PM | | That's correct, irc is not allowed to use gear pumps... | | Rob A.
USS Alabama
USS Arizona
USS Saratoga
DKM Bismarck
USS John Brown
http://groups.yahoo.com/group/NYBG/ | |
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Eurobusker
Midshipman
Posts:22
| | 27 Aug 2009 12:19 PM | | it maybe true, but here in france I aint got no one to argue with. lol | | | |
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Iceman
Rear Admiral (RDML)
Posts:1220
| | 27 Aug 2009 02:54 PM | | When in France, do as the frenchies! | | Rob A.
USS Alabama
USS Arizona
USS Saratoga
DKM Bismarck
USS John Brown
http://groups.yahoo.com/group/NYBG/ | |
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Tugboat
Veteran
Admiral
Posts:4539
| | 08 Sep 2009 03:11 PM | | Eurobusker, I'd recommend a 12V fuel pump (got one for my MGB for | | | Battling: SMS Scharnhorst, SMS Baden
Building: HMS KGV (Drives, pumps water, guns are in but not plumbed)
MN Edgar Quinet (Hull done)
Drydock/Mothballed: Rus Evstafi, DKM Lutzow, HMS Invincible
Plus 20-odd other projects, according to my Boy Scouts who thoughtfully counted them for me. | |
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Eurobusker
Midshipman
Posts:22
| | 08 Sep 2009 04:57 PM | | talking of "gear pumps" what are they?
I just took one citroen pump apart and its just a dynamic pump. It wont suck water unless its in water. Maybe this pump is an exception. | | | |
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Tugboat
Veteran
Admiral
Posts:4539
| | 08 Sep 2009 05:19 PM | | I think what he meant to say was 'positive displacement' pumps are not allowed by MWC... so diaphragm pumps, gear pumps, and piston pumps are all no-no's. Although as you say, you're a long way from here  | | | Battling: SMS Scharnhorst, SMS Baden
Building: HMS KGV (Drives, pumps water, guns are in but not plumbed)
MN Edgar Quinet (Hull done)
Drydock/Mothballed: Rus Evstafi, DKM Lutzow, HMS Invincible
Plus 20-odd other projects, according to my Boy Scouts who thoughtfully counted them for me. | |
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Eurobusker
Midshipman
Posts:22
| | 08 Sep 2009 05:33 PM | | what I seen is a rotor which turns and pushes the water outside, just as I seen in many other pumps. however the first cm is like a drill and it starts off small inside a 1cm tube. Whats folk's opinions here? | | | |
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Tugboat
Veteran
Admiral
Posts:4539
| | 08 Sep 2009 06:51 PM | | not a problem. That's a centrifugal pump, which is NOT positive-displacement. | | | Battling: SMS Scharnhorst, SMS Baden
Building: HMS KGV (Drives, pumps water, guns are in but not plumbed)
MN Edgar Quinet (Hull done)
Drydock/Mothballed: Rus Evstafi, DKM Lutzow, HMS Invincible
Plus 20-odd other projects, according to my Boy Scouts who thoughtfully counted them for me. | |
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Iceman
Rear Admiral (RDML)
Posts:1220
| | 08 Sep 2009 08:53 PM | | Yep, that's just what our pumps look like... | | Rob A.
USS Alabama
USS Arizona
USS Saratoga
DKM Bismarck
USS John Brown
http://groups.yahoo.com/group/NYBG/ | |
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Kotori87
Rear Admiral (RADM)
Posts:2343
| | 08 Sep 2009 11:42 PM | | Just out of curiosity, does anybody know why positive-displacement pumps are not allowed? Is it uber-powerful, is it dangerous, could it be used as a weapon? | | | There are 101 different types of people: those who understand binary, those who don't, and those who just can't count... | |
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Tugboat
Veteran
Admiral
Posts:4539
| | 09 Sep 2009 05:31 AM | | Short Form: Basically, it'd be super damage control. No flow restriction. Long form: Because for clubs that restrict pump output with a restrictor, a positive displacement pump would negate the restrictor. A PD pump will move exactly it's chamber capacity*, regardless of restrictions, up to the mechanical limits of the pump (i.e. the pressure breaks the pump) or the limits of the prime mover (i.e. the motor can't make enough torque to go any further). Furthermore, if one could build a system that'd hold under the pressure (not TOO much of a task), you could literally use a PD pump to cut through the balsa hull of the ship next to you, using the restrictor nozzle to focus it. *minus deadspace, and other insignificant details. If you really want to get into that, talk to Greg who probably has more knowledge about fluid flow in his little pinky than I have in my whole body.  | | | Battling: SMS Scharnhorst, SMS Baden
Building: HMS KGV (Drives, pumps water, guns are in but not plumbed)
MN Edgar Quinet (Hull done)
Drydock/Mothballed: Rus Evstafi, DKM Lutzow, HMS Invincible
Plus 20-odd other projects, according to my Boy Scouts who thoughtfully counted them for me. | |
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warspiteIRC
Veteran
Lieutenant
Posts:476
| | 09 Sep 2009 09:53 AM | | A positive displacement pump is like a early windshield washer pump. Two gears which have close tollerance and pump water through them. The reason that the rule is there is because one of the founders of the IRC, Stan Wilkens, thought that they could overpressure something past the pump gears there was a potential for an explosian (sp.). So rather than argue with a founder, the rule was passed and has been in the rule set ever since. I was there when the rule went in.
Marty | | | |
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Tugboat
Veteran
Admiral
Posts:4539
| | 09 Sep 2009 10:01 AM | | Well, technically he was correct. See my long form explanation. A PD pump will pump until something blows. From a regulatory standpoint these days, it means that the restrictor that MWC and IRC use doesn't matter, if you allow a PD pump. | | | Battling: SMS Scharnhorst, SMS Baden
Building: HMS KGV (Drives, pumps water, guns are in but not plumbed)
MN Edgar Quinet (Hull done)
Drydock/Mothballed: Rus Evstafi, DKM Lutzow, HMS Invincible
Plus 20-odd other projects, according to my Boy Scouts who thoughtfully counted them for me. | |
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