Helped a friend install a water maker yesterday. I was absolutely shocked at the weight of the thing. 60 kg for the high pressure pump and motor and 40 kg for the tubes. That is ignoring all the weight associated with valves, tubing, mounting platforms/hardware additional through hull/cock, instruments and low pressure pump.

His is a fairly heavy 42 ft cat so weight is perhaps not such a problem as it it would be in a lighter/smaller boat although I did suggest to him an alternative position for the 60kg high pressure pump which was over a metre further forward than planned to get it more central.

It mainly depends on what volume of water you want to produce. My system (Aquamiser+ AM616S) produces about 1.5 litres per minute and I would say the low pressure pump weighs 15-20kg. Plus the whole system is modular, so you can spread the parts around. What sort of water volume does the system produce?

Ilenart said..
It mainly depends on what volume of water you want to produce. My system (Aquamiser+ AM616S) produces about 1.5 litres per minute and I would say the low pressure pump weighs 15-20kg. Plus the whole system is modular, so you can spread the parts around. What sort of water volume does the system produce?

Sorry I'm not sure of the specifications of the unit although this guy doesn't usually skimp and there are two tubes. It's the high pressure pump that is 60 kilogrammes. The low pressure pump is far far lighter.

I've been working on fine tuning the suspension setup on a race car, and being a simple fella I need to draw it to get my head around it. One of the things that has surprised me is how the COG has such an impact on the car performance.
The goal is to align the direction of thrust to be as near as possible to alignment with the CoG. If it is misaligned, the car will lose horsepower as energy is lost from the forces acting at diverging angles.
When you run the simulation you can see how much impact there is from moving the CoG as compared to the propulsion/thrust vector, in this case 10 kg or 2" has a significant effect. To do this we use sensors on board the car that record lateral and longitudinal g forces and pitch/roll/yaw, not much different to a boat. Feed these into the model and play the animation and you can see the effect on the car suspension and handling. It has taken me about 6 months to get to this point and that's without having to worry about boat related stuff like centre of bouyancy and the fact the ocean is a very hilly race track!
Having said that, I am still kicking myself that I didn't try and do this with the boat. It would have been awesome for determining how much impact there is from additional weight and it's placement on the boats 'sea manners'.

julesmoto said..

southace said..

julesmoto said..

Ilenart said..
It mainly depends on what volume of water you want to produce. My system (Aquamiser+ AM616S) produces about 1.5 litres per minute and I would say the low pressure pump weighs 15-20kg. Plus the whole system is modular, so you can spread the parts around. What sort of water volume does the system produce?

Sorry I'm not sure of the specifications of the unit although this guy doesn't usually skimp and there are two tubes. It's the high pressure pump that is 60 kilogrammes. The low pressure pump is far far lighter.

The water maker I fitted makes 2.5 litres per minute. The boost pump is just a standard 12 volt pressure pump the type that fits in the palm of your hand. The high pressure pump is top of the range ceramic Italian made 240volt pump and weighs about 10kg. The membrane tubes are solid fibre glass and weigh about 5 kg each.

That's a hell of a lot lighter than my friend's system. I think he said his 240 volt pump was 700 watts. It looks way longer than that pump/moror and as I said weighs 60 kilogrammes. It's an American system which is strange considering the motor is 240 volts but the name escapes me. Production capacity is 140l/h.

It's not really rocket science I have found. The motor in the picture of my unit has not been attached the actual pump is still on the bunk ready to be bolted on with 4 bolts. The whole high pressure pump and motor would weigh about 20kg I would estimate. Maybe you just need to eat more weatbix. Not sure how it could weigh 60kg . Do you have some pics?

shaggybaxter said..
I've been working on fine tuning the suspension setup on a race car, and being a simple fella I need to draw it to get my head around it. One of the things that has surprised me is how the COG has such an impact on the car performance.
The goal is to align the direction of thrust to be as near as possible to alignment with the CoG. If it is misaligned, the car will lose horsepower as energy is lost from the forces acting at diverging angles.
When you run the simulation you can see how much impact there is from moving the CoG as compared to the propulsion/thrust vector, in this case 10 kg or 2" has a significant effect. To do this we use sensors on board the car that record lateral and longitudinal g forces and pitch/roll/yaw, not much different to a boat. Feed these into the model and play the animation and you can see the effect on the car suspension and handling. It has taken me about 6 months to get to this point and that's without having to worry about boat related stuff like centre of bouyancy and the fact the ocean is a very hilly race track!
Having said that, I am still kicking myself that I didn't try and do this with the boat. It would have been awesome for determining how much impact there is from additional weight and it's placement on the boats 'sea manners'.

I can understand that. Between myself and the boss we have had over 50 cars and the most sure footed and balanced around the twisties and straight at over 200k was a Porsche 944 which has 50/50 balance with engine in front and transaxle/gearbox in rear. Actually at a Hamiltons race day I had the fastest time up around the hats , ,handbrake turn and back in the 944 ,until Alf Contanza showed us how. I then made a total dick of myself at the presentations. Much to the displeasure of Hamiltons Porsche Management everyone was asking for an autograph from one of the participants who arrived at the course by helicopter. Thought I may as well get one for my daughters and told him it was for my daughters ,what band was he in . It was Dean from Gold medalists Torval and Dean fame. Oh well.

shaggybaxter said..

Bananabender said..

shaggybaxter said..
I've been working on fine tuning the suspension setup on a race car, and being a simple fella I need to draw it to get my head around it. One of the things that has surprised me is how the COG has such an impact on the car performance.
The goal is to align the direction of thrust to be as near as possible to alignment with the CoG. If it is misaligned, the car will lose horsepower as energy is lost from the forces acting at diverging angles.
When you run the simulation you can see how much impact there is from moving the CoG as compared to the propulsion/thrust vector, in this case 10 kg or 2" has a significant effect. To do this we use sensors on board the car that record lateral and longitudinal g forces and pitch/roll/yaw, not much different to a boat. Feed these into the model and play the animation and you can see the effect on the car suspension and handling. It has taken me about 6 months to get to this point and that's without having to worry about boat related stuff like centre of bouyancy and the fact the ocean is a very hilly race track!
Having said that, I am still kicking myself that I didn't try and do this with the boat. It would have been awesome for determining how much impact there is from additional weight and it's placement on the boats 'sea manners'.

I can understand that. Between myself and the boss we have had over 50 cars and the most sure footed and balanced around the twisties and straight at over 200k was a Porsche 944 which has 50/50 balance with engine in front and transaxle/gearbox in rear. Actually at a Hamiltons race day I had the fastest time up around the hats , ,handbrake turn and back in the 944 ,until Alf Contanza showed us how. I then made a total dick of myself at the presentations. Much to the displeasure of Hamiltons Porsche Management everyone was asking for an autograph from one of the participants who arrived at the course by helicopter. Thought I may as well get one for my daughters and told him it was for my daughters ,what band was he in . It was Dean from Gold medalists Torval and Dean fame. Oh well.

.
My first day at a new job I answered the phone and smartly rattled off the "Good morning, this is xxx from yyy, how may I help you?"

Which would have been fine except I rattled off my last company name instead of the new one. Which just so happened to be in opposition to each other.

There was a silence for a few seconds, then I heard the voice of the owner on the other end of the line "Well, that's what I'd call a &^%$#@ inglorious start."

Sorry but what relation are these comments regarding the weight of water makers other than relating balancing cars with yachts are similar topics???

southace said..

shaggybaxter said..

Bananabender said..

shaggybaxter said..
I've been working on fine tuning the suspension setup on a race car, and being a simple fella I need to draw it to get my head around it. One of the things that has surprised me is how the COG has such an impact on the car performance.
The goal is to align the direction of thrust to be as near as possible to alignment with the CoG. If it is misaligned, the car will lose horsepower as energy is lost from the forces acting at diverging angles.
When you run the simulation you can see how much impact there is from moving the CoG as compared to the propulsion/thrust vector, in this case 10 kg or 2" has a significant effect. To do this we use sensors on board the car that record lateral and longitudinal g forces and pitch/roll/yaw, not much different to a boat. Feed these into the model and play the animation and you can see the effect on the car suspension and handling. It has taken me about 6 months to get to this point and that's without having to worry about boat related stuff like centre of bouyancy and the fact the ocean is a very hilly race track!
Having said that, I am still kicking myself that I didn't try and do this with the boat. It would have been awesome for determining how much impact there is from additional weight and it's placement on the boats 'sea manners'.

I can understand that. Between myself and the boss we have had over 50 cars and the most sure footed and balanced around the twisties and straight at over 200k was a Porsche 944 which has 50/50 balance with engine in front and transaxle/gearbox in rear. Actually at a Hamiltons race day I had the fastest time up around the hats , ,handbrake turn and back in the 944 ,until Alf Contanza showed us how. I then made a total dick of myself at the presentations. Much to the displeasure of Hamiltons Porsche Management everyone was asking for an autograph from one of the participants who arrived at the course by helicopter. Thought I may as well get one for my daughters and told him it was for my daughters ,what band was he in . It was Dean from Gold medalists Torval and Dean fame. Oh well.

.
My first day at a new job I answered the phone and smartly rattled off the "Good morning, this is xxx from yyy, how may I help you?"

Which would have been fine except I rattled off my last company name instead of the new one. Which just so happened to be in opposition to each other.

There was a silence for a few seconds, then I heard the voice of the owner on the other end of the line "Well, that's what I'd call a &^%$#@ inglorious start."

Sorry but what relation are these comments regarding the weight of water makers other than relating balancing cars with yachts are similar topics???

It loosely started as me musing about learning of effect on CoG from where and how much weight is placed, but happily admit it's more random thoughts than a cogent thought worth the post.
But it is keeping the thread alive till the wiser souls chime in with the on-topic stuff.
Apologies Julesmoto for the thread drift!

woko said..

southace said..

shaggybaxter said..

Bananabender said..

shaggybaxter said..
I've been working on fine tuning the suspension setup on a race car, and being a simple fella I need to draw it to get my head around it. One of the things that has surprised me is how the COG has such an impact on the car performance.
The goal is to align the direction of thrust to be as near as possible to alignment with the CoG. If it is misaligned, the car will lose horsepower as energy is lost from the forces acting at diverging angles.
When you run the simulation you can see how much impact there is from moving the CoG as compared to the propulsion/thrust vector, in this case 10 kg or 2" has a significant effect. To do this we use sensors on board the car that record lateral and longitudinal g forces and pitch/roll/yaw, not much different to a boat. Feed these into the model and play the animation and you can see the effect on the car suspension and handling. It has taken me about 6 months to get to this point and that's without having to worry about boat related stuff like centre of bouyancy and the fact the ocean is a very hilly race track!
Having said that, I am still kicking myself that I didn't try and do this with the boat. It would have been awesome for determining how much impact there is from additional weight and it's placement on the boats 'sea manners'.

I can understand that. Between myself and the boss we have had over 50 cars and the most sure footed and balanced around the twisties and straight at over 200k was a Porsche 944 which has 50/50 balance with engine in front and transaxle/gearbox in rear. Actually at a Hamiltons race day I had the fastest time up around the hats , ,handbrake turn and back in the 944 ,until Alf Contanza showed us how. I then made a total dick of myself at the presentations. Much to the displeasure of Hamiltons Porsche Management everyone was asking for an autograph from one of the participants who arrived at the course by helicopter. Thought I may as well get one for my daughters and told him it was for my daughters ,what band was he in . It was Dean from Gold medalists Torval and Dean fame. Oh well.

.
My first day at a new job I answered the phone and smartly rattled off the "Good morning, this is xxx from yyy, how may I help you?"

Which would have been fine except I rattled off my last company name instead of the new one. Which just so happened to be in opposition to each other.

There was a silence for a few seconds, then I heard the voice of the owner on the other end of the line "Well, that's what I'd call a &^%$#@ inglorious start."

Sorry but what relation are these comments regarding the weight of water makers other than relating balancing cars with yachts are similar topics???

Come on SA you've been around long enough to get the drift. Btw we haven't seen much of your new vessel ?

Topic was water makers. I have had 14 months of lows and highs since installing the watermaker. I now know I fill the 3 x 300 litre central water tanks in 6 hours using 6 litres of diesel from the 100 litre diesel 5k a generator supply tank and stability is improved when all is pressed full.

woko said..
Looking good. How are you finding the maintenance of the membrane ?

The membrane is maintenance free providing the unit is flushed after use. Unfortunately I did have to replace both the membranes over the past 12 months but I believe this was caused by faulty boost pumps giving me a low pressure or sometimes the membranes can be faulty from the factory.

woko said..
Ok it seems that the membrane is the finicky bit. Btw 1 litre /hr to run a 5kva geny is pretty good, what make is it ? and yes I'm aware that question could morph into a tread drift, but...... it's sorta relevant

It's a "whisper power" 1 cylinder piccolo engine which drives a magnito driven inverter. It was a 4Kva inverter but the original fried it self for some unknown reason . The replacement was updated to the 5kva version. The piccolo engine has its own heat exchanger which I thought was pretty cool for such a small Diesel engine.