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Salt Water Powered 4x4 Car Electronic Kit

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Quoting product code: N45CD


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About this product


  • Make a moving salt water powered 4x4 car
  • Build a car complete with a visible engine block and sturdy pivoted 4x4 design and power it using just a few drops of salt water
  • Learn about alternative fuels

Product overview

• Make a moving salt water powered 4x4 car
• Build a car complete with a visible engine block and sturdy pivoted 4x4 design and power it using just a few drops of salt water
• Learn about alternative fuels
• Have fun creating this kit out of 96 parts
• Suitable for ages 8+
• No batteries required as it creates its own power

What can I make with this kit?
Use the 96 parts to build a rugged 4x4 car with pivoted body and large sturdy wheels. Watch the engine move either in flat or ‘V’ shaped orientation and adjust the height of your vehicle to get over the terrain. Suitable for ages 8 and over with adult supervision. The kit (21-752) clicks together – no need for batteries, glue or soldering. However, a crosshead and slotted screwdriver diagonal cutters (recommended Order Code A20QW ) and small stick may be helpful.

What can I learn from this kit?
Have fun learning about alternative clean energy with this cool salt water powered car. Salt water fuel cells create power by using a chemical reaction between a magnesium strip and oxygen. The salt water is a catalyst for the reaction. Add salt and water in a 1:5 ratio for the most efficient mix, experiment and see how the salt level in the water effects the car. Place four or five drops of salt water on the fabric and watch the car go for up to 15 minutes. Spare fuel cells are available - Order Code N44DQ.

The materials used are environmentally friendly with no toxic substances or chemicals used.

Rated 5 out of 5 by from My 9 year old daughter built most of this car, with some help, and it has been a blast. There is need for parental involvement, to remove burrs and to ensure pieces are firmly clamped together (more than most kids will be able to do). However, the instructions are pretty clear and the results are pretty fantastic. Seeing this 4x4 move around the house and garden powered by 5 small drops of salt water is amazing, and hopefully inspiring to kids, and parents everywhere.
Date published: 2014-11-11
Rated 5 out of 5 by from Great value kit This kit is beautifully designed and mechanically perfect. Quite a high level of skill required for assembly which takes 2 hours plus. No glue required. Worked first time. Can always replace fuel cell with a lithium coin cell when saltwater cell is used up. Great toy because the workings of the display engine is visible in flat 8 or V8 configuration.Ride height can be altered plus the articulated 4 wheel drive chassis climbs over obstacles.
Date published: 2014-12-27
Rated 5 out of 5 by from Very high quality, fun and educational. Firstly, this is a well designed and well made kit. All of the parts fit together perfectly, and appear to be made with very tight tolerance specs. You can fit parts together perfectly without glue, and the moving parts don't bind or stick anywhere, they run smoothly and freely. Everything is flush and aligned, with no parts being forced. The quality is far better than the usual model kits you can buy for children. It took about an hour to assemble, but it was an enjoyable hour. I work with mechanical parts for a living, so others might take a little longer. It certainly isn't difficult to assemble if you follow the instructions. Adult supervision is definitely required to get the best out of the kit. A child might rush and not follow the instructions - some parts look similar and care is needed. For example, extra special care is needed when assembling the piston/shafts and mounting them on the crank. You need to have them aligned in the correct orientation, a detail which might be missed by a child. The instruction diagrams are clear and described in decent English rather than Chinglish which you see quite often these days. I would definitely recommend the use of angled snips to clip the plastic pieces from their frames. These will ensure part without burrs or damage. Once assembled, a few drops of salt water on the cell will power it for a while. It worked perfectly first time in our case, and I have to say I was really surprised how long 5 drops of water lasted. The car is 4 wheel drive and can tackle small obstacles of about 1cm in height. Speed is fairly slow, perhaps about 5-cm per second, but it's not about speed. Mechanically, this looks beautiful, and you can see clearly how an 8-piston engine works, and how the crank shaft turns. You can easily change from a V8 to a Flat 8, or choose a rigid, or flexible chassis, even after assembly. Inquisitive minds of all ages should love this.
Date published: 2015-10-17
Rated 1 out of 5 by from Poor instructions See instructions on Page 3 of the manual in the image, no words. Then see page 4 wow how do you get there without instructions is beyond me, don't waste your precious time and money on this product, unless you got the time and patience.....
Date published: 2016-01-06
Rated 4 out of 5 by from great for budding engineer brought this for my son at Christmas and he loves it and cant wait to build it
Date published: 2017-01-04
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Hello! Can I order a spare part for this vehicle? My grandchildren lost one vital part and now car sits ... waiting. The part I need is blue and located next to one of the wheels.

Asked by: Peter
Unfortunately we do not have spare parts for this item . However your local maplin store be be able to help with this if they have one in store.
Answered by: darren cordon
Date published: 2017-09-12

what is the name of the company who designed this?

Asked by: Maxy
Unfortunately we do not hold this information.
Answered by: Dominic
Date published: 2017-02-07

it can be deliver to india Gujarat ahemdabad assarwa near prabhunager circle adarsh society

Asked by: Anonymous
Unfortunately we do not ship outside the UK .
Answered by: Darren
Date published: 2016-08-14

What voltage _should_ the fuel cell produce? Mine produces 1.58 volts, but this is not enough to move the vehicle. Wiring up a couple of old AAs (2.52 volts) is enough to get the vehicle moving. How do I increase the output of the fuel cell?

Asked by: parent64k
Please see page 17 of the user manual found in the link below:
Answered by: Dominic
Date published: 2016-01-06

how many times can you get the 15 minutes run time from the original fuel cell, thanks
Asked by: stuart
The instruction booklet in our kit says each magnesium panel is good for up to 4 hours, with each lot of salt water lasting 15 minutes.
Answered by: parent64k
Date published: 2016-01-05

We have a problem trying to fit the rear wheel as the gear/axle is not engaging /slipping

Asked by: Arold
If you take the item into store, they will be able to take a look/ help with the build.
Answered by: Dominic
Date published: 2016-01-06
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