RE: CLC Independence - Radio Equipment
The inexpensive way is to buy a good used Ace Nautical Commander radio. You can post a wanted ad here and other rc forums. These are great radios and can be converted from the 75MHz to 2.4GHz transmitter. Or you can use both frequencies . The more expensive but ideal is to buy a good used Graupner MC-19 40MHz radio. These were sold in Europe. The 40MHz transmitter can be converted to a HiTec 2.4GHz transmitter that will allow full telemetry. Single transmitter COMPUTER-SYSTEM mc-19 4-language menu. Micro-computer radio control system for 10 control functions (SPCM) (PPM 24: 12 control functions) 4 multi-function menus: Fixed-wing, Helicopter, Boat and Car/Truck. 35 MHz Ref. N°. 4821.77 35 MHz-B Ref. N°. 4821.77.B 40 MHz Ref. N°. 4827.77 41 MHz Ref. N°. 4827.41.77 back special offers, price list ROKE- home Product information Information sur les produits GRAUPNER again sets new standards in High-End radio control technology. World´s first: four-language dialogue menu (German, English, French, Italian). 12 control functions. Simplified assignment of sticks, external switches, proportional controls and trim levers as control functions, multi-function boat / car transmitter without additional external switches or switch modules. Update-capable operating system for a future-proof transmitter. Ultra-Speed Low-Power Single-Chip Micro-Computer, 256 kByte (2Mbit) flash memory, 16 kByte (128 kbit) RAM, 73 ns operating cycle! With integral high-speed precision A/D converter. 3D Rotary Encoder in conjunction with four programming buttons for accurate settings and superb programming convenience. 20 model memories. High-resolution MULTI-DATA GRAPHIC LCD screen ensures accurate monitoring and precise graphic display of curves and characteristic lines. CONVENIENT MODE SELECTOR for easy switching between stick modes 1 - 4 (e.g. throttle right / throttle left). 4 selectable modulation types. SPCM 20 Super-PCM modulation with high system resolution of 1024 steps per control function. For the following receivers: smc-14, smc-19, smc-20, smc-19 DS, smc-20 DS, smc-20 DSYN PCM 20 PCM with system resolution of 512 steps per control function. For the following receivers: mc-12, mc-20, DS 20 mc PPM 18 The most widespread standard transmission method (FM and FMSSS). For the following receivers: C 8 FM, C 12, C 16, C 17, C 19, DS 18, DS 19, DS 20, and the following miniature receivers: XP 10, XP 12 FM, XN 12, XM 16, R 600, R 700, C 6 FM PPM 24 12 control functions are possible with the DS 24 FM S receiver, one of them (freely selectable) as an integral ]Nautic switch module. In this case a module, Order Ref. N°. 4159, is required at the receiver end. At the transmitter all the controls which can be connected can be used to control up to 8 switched functions, i.e. switches, trim switches, sticks and auxiliary analogue controls connected to inputs 5 - 10. Two additional Nautic transmitter modules (Order Ref. N°. 4108 or 4141) can also be installed and operated with the corresponding receiver modules (Order Ref. N°. 4159 or 4142). Even in this configuration there are still 9 functions freely available: normally 1 for steering, 1 for forward / reverse speed, and a further 7 functions for any auxiliary functions you wish. They can be operated using either stick functions including trim, or stick functions and trims as separate (analogue) functions, or analogue inputs (inputs 5 - 10 / switches). This maximum set-up provides 24 reversible switched functions + 2 standard control functions + 7 free function channels. 3 freely programmable mixers for fixed-wing model aircraft, helicopters, boats, cars and trucks. 3-point mixers for throttle, collective pitch and tail rotor plus gyro offset adjustment. These settings can be made separately for each flight phase. Fixed-wing / Heli: Dual Rate / Expo for Ch2 - Ch4 (in each case switchable in common for each channel). Phase trim for camber-changing flaps, ailerons, elevator, according to model type. Helicopter swashplate mixer for 1-, 2-, 3- and 4-point linkages. Servo travel adjustment for 12 servos, servo reverse, servo centre, servo travel, variable separately for each side of centre. Programmable Fail-Safe for PCM/SPCM. 2 switch-controlled timers, stopwatch, flight time / run time. HELP BUTTON provides valuable information on programming and the currently selected programming menu. Model copy function for all model memories. Comprehensive fixed-wing mixer menu with 12 set-up programs for 2 ailerons and 2 camber-changing flaps (number of servos). Trainer system with total control transfer. Basic fixed-wing model aircraft settings. Motor at Ch1 (idle trim). Tail (type). AIL/FLAP (Ref. N°. of servos). 2nd and 3rd flight phase. Trainer (total control transfer). All adjustments are made at the Teacher transmitter. Basic model helicopter settings. Swashplate type 1 - 4. Rotor direction. Collective pitch min. forward / back. 2nd flight phase + auto-rotation. Trainer (total control transfer). Basic model boat / car settings. An integral Nautic-Expert module can be activated. All physical controls present can be assigned to any function and used to operate up to 8 switched functions, e.g. primary controls, trim switches and stick functions. Content mc-19 micro-computer transmitter with integral NiMH transmitter battery, transmitter RF module on the appropriate frequency Specification Transmission system SPCM 20/PCM 20/PPM 18/PPM 24, selectable Transmitter RF module Integral (10 kHz spacing 35, 35-B, 40 or 41 MHz bands) FMsss T crystals 35 MHz band: channels 61 .... 8035 MHz band: channels 182 .... 19140 MHz band: channels 50 ... 9241 MHz band: channels 400 ... 420 Channel spacing 10 kHz Max. control functions SPCM = 10, PCM = 10, PPM = 9, PPM 24 = 12 Base unit control functions 6 functions Control functions 10, (4 proportional with trims, 6 proportional or switchable) plus 2 software control functions Channel pulse width 1.5 ms ± 0.5 ms Servo travel resolution SPCM 20: 10-bit (1024 steps), PCM 20: 9-bit (512 steps) Temperature range -15  +55°C Telescopic aerial 10-section, approx. 1470 mm long Operating voltage 9.6 ... 12 V Current drain approx. 40 mA (excl. RF module) Dimensions approx. 225 x 215 x 70 mm Weight approx. 900 g excl. transmitter battery Recommended accessories (Please click for description). Carbon-transmitter-tray 3093 + Luxury transmitter neckstrap Ref. N°. 71 or Standard-neckstrap 1126 Chargers Transmitter charge lead 3022 Receiver-batteries Charge lead for receiver-batteries 3021 Servo C 577 or Other servos.
Posted on: 8/18/2012 3:59 PM by Author "sunworksco" in the forum "RC Sailboats"
http://www.rcuniverse.com/forum/fb.asp?m=11198121

RE: Transmitter question
I have an Aurora 9, too. It will work ok. I also use the Graupner MC-19. Although a better way to go is to buy a used Graupner MC-19 40MHz radio and convert it to 2.4GHz HiTec transmitter. This allows you to have marine computer programming and full telemetry of your electronic equipment. The Graupner radio also has aircraft and land vehicle programming. Single transmitter COMPUTER-SYSTEM mc-19 4-language menu. Micro-computer radio control system for 10 control functions (SPCM) (PPM 24: 12 control functions) 4 multi-function menus: Fixed-wing, Helicopter, Boat and Car/Truck. 35 MHz Ref. N°. 4821.77 35 MHz-B Ref. N°. 4821.77.B 40 MHz Ref. N°. 4827.77 41 MHz Ref. N°. 4827.41.77 back special offers, price list ROKE- home Product information Information sur les produits GRAUPNER again sets new standards in High-End radio control technology. World´s first: four-language dialogue menu (German, English, French, Italian). 12 control functions. Simplified assignment of sticks, external switches, proportional controls and trim levers as control functions, multi-function boat / car transmitter without additional external switches or switch modules. Update-capable operating system for a future-proof transmitter. Ultra-Speed Low-Power Single-Chip Micro-Computer, 256 kByte (2Mbit) flash memory, 16 kByte (128 kbit) RAM, 73 ns operating cycle! With integral high-speed precision A/D converter. 3D Rotary Encoder in conjunction with four programming buttons for accurate settings and superb programming convenience. 20 model memories. High-resolution MULTI-DATA GRAPHIC LCD screen ensures accurate monitoring and precise graphic display of curves and characteristic lines. CONVENIENT MODE SELECTOR for easy switching between stick modes 1 - 4 (e.g. throttle right / throttle left). 4 selectable modulation types. SPCM 20 Super-PCM modulation with high system resolution of 1024 steps per control function. For the following receivers: smc-14, smc-19, smc-20, smc-19 DS, smc-20 DS, smc-20 DSYN PCM 20 PCM with system resolution of 512 steps per control function. For the following receivers: mc-12, mc-20, DS 20 mc PPM 18 The most widespread standard transmission method (FM and FMSSS). For the following receivers: C 8 FM, C 12, C 16, C 17, C 19, DS 18, DS 19, DS 20, and the following miniature receivers: XP 10, XP 12 FM, XN 12, XM 16, R 600, R 700, C 6 FM PPM 24 12 control functions are possible with the DS 24 FM S receiver, one of them (freely selectable) as an integral ]Nautic switch module. In this case a module, Order Ref. N°. 4159, is required at the receiver end. At the transmitter all the controls which can be connected can be used to control up to 8 switched functions, i.e. switches, trim switches, sticks and auxiliary analogue controls connected to inputs 5 - 10. Two additional Nautic transmitter modules (Order Ref. N°. 4108 or 4141) can also be installed and operated with the corresponding receiver modules (Order Ref. N°. 4159 or 4142). Even in this configuration there are still 9 functions freely available: normally 1 for steering, 1 for forward / reverse speed, and a further 7 functions for any auxiliary functions you wish. They can be operated using either stick functions including trim, or stick functions and trims as separate (analogue) functions, or analogue inputs (inputs 5 - 10 / switches). This maximum set-up provides 24 reversible switched functions + 2 standard control functions + 7 free function channels. 3 freely programmable mixers for fixed-wing model aircraft, helicopters, boats, cars and trucks. 3-point mixers for throttle, collective pitch and tail rotor plus gyro offset adjustment. These settings can be made separately for each flight phase. Fixed-wing / Heli: Dual Rate / Expo for Ch2 - Ch4 (in each case switchable in common for each channel). Phase trim for camber-changing flaps, ailerons, elevator, according to model type. Helicopter swashplate mixer for 1-, 2-, 3- and 4-point linkages. Servo travel adjustment for 12 servos, servo reverse, servo centre, servo travel, variable separately for each side of centre. Programmable Fail-Safe for PCM/SPCM. 2 switch-controlled timers, stopwatch, flight time / run time. HELP BUTTON provides valuable information on programming and the currently selected programming menu. Model copy function for all model memories. Comprehensive fixed-wing mixer menu with 12 set-up programs for 2 ailerons and 2 camber-changing flaps (number of servos). Trainer system with total control transfer. Basic fixed-wing model aircraft settings. Motor at Ch1 (idle trim). Tail (type). AIL/FLAP (Ref. N°. of servos). 2nd and 3rd flight phase. Trainer (total control transfer). All adjustments are made at the Teacher transmitter. Basic model helicopter settings. Swashplate type 1 - 4. Rotor direction. Collective pitch min. forward / back. 2nd flight phase + auto-rotation. Trainer (total control transfer). Basic model boat / car settings. An integral Nautic-Expert module can be activated. All physical controls present can be assigned to any function and used to operate up to 8 switched functions, e.g. primary controls, trim switches and stick functions. Content mc-19 micro-computer transmitter with integral NiMH transmitter battery, transmitter RF module on the appropriate frequency Specification Transmission system SPCM 20/PCM 20/PPM 18/PPM 24, selectable Transmitter RF module Integral (10 kHz spacing 35, 35-B, 40 or 41 MHz bands) FMsss T crystals 35 MHz band: channels 61 .... 8035 MHz band: channels 182 .... 19140 MHz band: channels 50 ... 9241 MHz band: channels 400 ... 420 Channel spacing 10 kHz Max. control functions SPCM = 10, PCM = 10, PPM = 9, PPM 24 = 12 Base unit control functions 6 functions Control functions 10, (4 proportional with trims, 6 proportional or switchable) plus 2 software control functions Channel pulse width 1.5 ms ± 0.5 ms Servo travel resolution SPCM 20: 10-bit (1024 steps), PCM 20: 9-bit (512 steps) Temperature range -15  +55°C Telescopic aerial 10-section, approx. 1470 mm long Operating voltage 9.6 ... 12 V Current drain approx. 40 mA (excl. RF module) Dimensions approx. 225 x 215 x 70 mm Weight approx. 900 g excl. transmitter battery Recommended accessories (Please click for description). Carbon-transmitter-tray 3093 + Luxury transmitter neckstrap Ref. N°. 71 or Standard-neckstrap 1126 Chargers Transmitter charge lead 3022 Receiver-batteries Charge lead for receiver-batteries 3021 Servo C 577 or Other servos.
Posted on: 8/18/2012 3:45 PM by Author "sunworksco" in the forum "RC Sailboats"
http://www.rcuniverse.com/forum/fb.asp?m=11198111

RE: RPMTECH AND 1/72 KILO KIT
What a shame. I was going to order a Holland submarine to gift to a friend that repaired my 1/32nd scale Holland submarine. Does anyone have a Holland kit for sale?
Posted on: 8/18/2012 3:13 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=11198082

RE: Submarine WTC build
There is little argument about how superior the Alexander Engel shaft seals keep water out of the WTC. http://www.engel-modellbau.eu/catalog/index.php?cPath=37_91
Posted on: 8/18/2012 2:42 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=11198049

RE: Best Radio for twin screw model ships
The best would be a Robbe F-14 Navy, Robbe F-16 Navy or better yet a Graupner M19. The Robbe radios can be upgraded to a twin-screw stick for marine use. Regards, John
Posted on: 11/2/2010 11:03 PM by Author "sunworksco" in the forum "RC Scale Boating"
http://www.rcuniverse.com/forum/fb.asp?m=10112275

RE: J-Boat Build
I'm ordering a Ranger hull from Larry Ludwig next February. Regards, John
Posted on: 10/15/2010 11:31 AM by Author "sunworksco" in the forum "RC Sailboats"
http://www.rcuniverse.com/forum/fb.asp?m=10070266

RE: Need tips on sub to static-dive in icy water
40Mhz is what you use in Europe for rc submarines. Regards, John
Posted on: 10/10/2010 9:51 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=10060536

RE: U-47 SUBMARINE
You can but the banjos from : http://www.modelluboot.de/ or http://www.precisionpattern.biz/subs/index.htm Regards, John
Posted on: 10/10/2010 9:45 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=10060522

J-Boat Build
Has anyone built one of these J-Boats? I'm starting on a build in February. Regards, John
Posted on: 10/9/2010 12:14 PM by Author "sunworksco" in the forum "RC Sailboats"
http://www.rcuniverse.com/forum/fb.asp?m=10057688

RE: need trimming material advice ??
I emailed a life vest factory to try and buy scraps but no reply. Where have you found the blue closed cell marine foam? It is a much better foam to use for hull ballast because it forms curved surfaces easier. I sold hot tub insulating covers made out of marine foam and it would last for many years and would never absorb moisture. The only thing that would happen was that cats would claw it to death. Regards, John
Posted on: 10/6/2010 9:07 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=10052703

RE: Underwater Remote?
Here you go, again!, Never let a little bit of water get between your dreams! Regards, John
Posted on: 10/5/2010 1:02 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=10049093

RE: U-47 SUBMARINE
Yes.Alexander Engel has the parts. Regards, John
Posted on: 10/4/2010 1:33 AM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=10045882

RE: Biggest U-Boat Kit You Can Buy?
1/20th scale Type VII ? Regards, John
Posted on: 10/4/2010 1:26 AM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=10045874

RE: Underwater Remote?
Here you go!, Never let a little bit of water get between your dreams! Regards, John
Posted on: 10/4/2010 1:17 AM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=10045866

RE: 7.2v Ni-cd switch to Ni-mh?
I went from NiCads to NiMh to Lipos and now to LiFe batteries. The LiFes are bullet-proof. Regards, John
Posted on: 10/4/2010 1:04 AM by Author "sunworksco" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=10045857

RE: Dual stick Marine Radio
Don't hold your breath on this radio.It has been on their website for years and they don't have a clue when it will be reality. The Robbe F-14 Nautical radio is the best new radio for dual sticks. You can buy a used Ace Nautical Commander and install a 2.4 mHz tx. Here are some images.
Posted on: 10/4/2010 12:53 AM by Author "sunworksco" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=10045849

RE: WTC Piston Tanks/Motors
[quote]ORIGINAL: Tony Fitzpatrick [quote]ORIGINAL: sunworksco Tony Fitzpatrick, If you would like to buy an Engel piston tank,have at it! I choose to move to a newer and better design,but do not have a problem with your choice. [/quote] You may have missed that,until your request for piston tank blueprints,I had not told you what to do. I am merely trying to give you a heads up because your other
Posted on: 11/28/2009 7:29 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9287726

RE: WTC Piston Tanks/Motors
Cuffs do not [quote]ORIGINAL: cyclops2 I thought my old blood pressure cuff did a fantastic job. All weight on the hull bottom & the cuff in the top of the hull & sail. What does a 200 lb Grey Hair know.................[:)] Rich [/quote] Cuffs do not works on a 94.5" length sub.Pistons on each end of the sub do the job.
Posted on: 11/27/2009 10:04 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9285826

RE: WTC Piston Tanks/Motors
Tony Fitzpatrick, If you would like to buy an Engel piston tank,have at it! I choose to move to a newer and better design,but do not have a problem with your choice.
Posted on: 11/27/2009 9:52 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9285795

RE: WTC Piston Tanks/Motors
[quote]ORIGINAL: Tony Fitzpatrick To push a quantity of 1 litre in 30 seconds against a pressure of 70 kPa takes 2.5 watts.Variation in the diameter only changes the gear ratio required. You may have seen similar arrangements with linear actuaters. This one can not even do the job and it is a far better candidate than the one you have been sold [link=http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=4541000]Linear actuator[/link] You are trying to use a very ordinary motor which is totatally unsuitable.Rewinding the motor will not be a solution.I don't believe the motor manufacturer is so utterly daft. This is more like it [link=http://www.robotshop.us/lynxmotion-ghm-03-gear-head-motor-2.html]geared brush motor[/link] [/quote] We are not using any of those motors.I agree with you that the motors,that you are talking about here, are not capable but we are using a completely different motor.We are working with an electrical engineer on the motor design,not some "fly-by-the seat-or-your-pants" hobbyist! You should start building piston tanks while you still have all of the knowledge and skills.Please post your blueprint here so we can learn how to build it.
Posted on: 11/27/2009 6:02 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9285266

RE: WTC Piston Tanks/Motors
The motor manufacturer is testing the motor and drive screw and will find the correct winding by by attaching weights to the drive screw and recording the amperage,watts and voltage. Quote:You need one thosandth of three horse power. Have you tested the exact piston tank that we are using?How did you arrive with that calculation? Remember,we are using the motor for direct drive with no gear reduction.
Posted on: 11/27/2009 3:53 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9285023

RE: WTC Piston Tanks/Motors
I have sourced out a very capable hollow shaft sensorless brushless motor for the piston tank drive screw.It is only 3.2 " diameter x 2.25" length.The motor can be wound to produce over 3 hp and is capable of moving the piston screw.I am using a separate bolt-on sensor which will sense location and speed of the piston drive screw,eliminating any need for limiting switches.The controller will have reverse,forward and speed sensing.I will be using two piston tanks in a 94.5" length sub with radio transmitter slide switches to adjust an exact depth control and operate the tanks individually.
Posted on: 11/27/2009 6:43 AM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9284181

RE: WTC Piston Tanks/Motors
Right.The wtc.
Posted on: 11/16/2009 9:32 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9259027

RE: WTC Piston Tanks/Motors
I have been into rc submarine design since I toured the 32nd Parallel Shop in the early eighties. I could not design the wtc without the help of the engineers from the prop motor,chipboard maker and the piston tank motor factories. If I can design a full scale electric car,I think I can take on this rc sub challenge and I love unknown arenas as long as I have a team of talented engineers with me. Thanks for the good wishes and may we meet sometime for a good handshake, a fun regatta and a few pints of brew.I know you wish nothing but good submarinership.
Posted on: 11/13/2009 1:03 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9251115

RE: WTC Piston Tanks/Motors
I'm using A123 batteries and they do not need frequent charging. The two ballast tanks are 3.75" I.D. x 7" length at 1,000ml each. That makes the total length needed for the tank and extended rod around 14" . I may split the overall tank length in two and have the prop motors,escs,main reciver,stern piston tank with controls/receiver then the bow piston tank/receiver and bow servo/receiver. This would make better sense for a 94.5" long sub for the ballast layout. How difficult is it to disassemble a wtc with Norbert Bruggen bajonett rings?
Posted on: 11/13/2009 11:00 AM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9250831

RE: WTC Piston Tanks/Motors
The wtc will be 4"O.D. x 3.75" I.D. x 48" length.This will make a 3.75" I.D. piston tank.Engel tanks are only 3" O.D. x 2.75" I.D.Three watertight compartments are an advantage.I want to keep all of the wiring within the wtc.The aluminum wtc tube will have half of the bajonett machined onto the ends and mid sections.I will also have a small polycarb window in each section. The compartments will have their own receivers/battery packs and be able to communicate with each other.The stern section of the wtc will have the primary receiver,the other two receivers will be infrequently used surface type.
Posted on: 11/12/2009 6:45 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9249458

RE: External Electrical Connections
Fresh Water: The source of almost all freshwater is Precipitation precipitation from the Earth's atmosphere atmosphere, in the form of Mist mist, Rain rain and Snow snow. A very small proportion is emitted from active Volcano volcanoes. Freshwater falling as mist, rain or snow contains materials dissolved from the Atmosphere atmosphere and material from the sea and land over which the rain bearing clouds have traveled. In Industry industrialized areas rain is typically acid because of dissolved oxides of Sulphur sulphur and Nitrogen nitrogen formed from burning of fossil fuels in cars, factories, trains and aircraft and from the atmospheric emissions of industry. In extreme cases this causes Acid rain acid rain which can has caused severe pollution of lakes and rivers in parts of Scandinavia Scandinavia, Scotland Scotland, Wales Wales and the United States United States. In coastal areas freshwater may contain significant concentrations of salts derived from the sea if windy conditions have lifted drops of seawater into the rain-bearing clouds. This can give rise to elevated concentrations of Sodium sodium, Chloride chloride, Magnesium magnesium ,mercury and Sulfate sulfate as well as many other compounds in smaller concentrations. In desert areas, or areas with impoverished or dusty soils, rain bearing winds can pick up sand and dust and this can be deposited elsewhere in precipitation and causing the freshwater flow to be measurably contaminated both by insoluble solids but also by the soluble components of those soils. Significant quantities of Iron iron may be transported in this way including the well documented transfer of iron rich rainfall falling in Brazil derived from sand-storms in the Sahara Sahara in northern Africa Africa. This effect can cause unwelcome contamination with dust from the Chernobyl Chernobyl disaster being spread across Europe Europe in rain clouds. Fresh water can be alot of things.
Posted on: 11/11/2009 12:19 AM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9245144

RE: External Electrical Connections
The amount of conduction of electricity depends on the amount of total dissolved solids suspended in the water. A TDS water meter reads the level by electrical conduction of the solids by using current from batteries.Water flowing out of home faucets in California ranges anywhere from 50 parts per million to 400ppm.The closer you are to geothermal springs,the higher the dissolved solids.Swimming pools disinfected with chlorine can be at 200-600ppm but I have seen pool water over 2600ppm.Salt chlorination systems can make dissolved solids as high as 4500ppm.It all depends on how often the pool water is replenished. The TDS meter reads the level of conductivity by feeding voltage from one electrode to another so voltage does actually travel through water and batteries can be discharged in this way.As someone who designs and installs electrical systems,I would never expose bare connections in dry or wet areas.
Posted on: 11/10/2009 11:42 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9245074

RE: WTC Piston Tanks/Motors
I have enough compressible space in between the end of the tanks.
Posted on: 11/10/2009 6:18 PM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9244083

RE: WTC Piston Tanks/Motors
Taxidriver: Clearly he is going to have 3 MaxAmps.com for all your LiPo, NiMh and NiCd RC Battery Needs. Click here now. batteries as well 3 subs in 1.Hope you dont have a frequency clash at pond side and have to change crystals. Regardless, make sure the compressable volume that each piston tank will act upon when submerging is great enough to avoid puting strain on the motor in your compartmentalised design. In a convetional design the internal pressure would equalise through out the WTC, and hence be lower. I have this design of the electronics and batteries figured out with the help of VanTech.
Posted on: 11/10/2009 11:37 AM by Author "sunworksco" in the forum "RC Submarines"
http://www.rcuniverse.com/forum/fb.asp?m=9243153