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4M Green Science Windmill Generator

RRP: £10.99
Price: £7.04 & FREE Delivery in the UK on orders over £10. Details
You Save: £3.95 (36%)
Only 1 left in stock.
Sold by GiftsGifted and Fulfilled by Amazon. Gift-wrap available.
11 new from £1.00
  • Build a windmill generator
  • Help children to understand mechanical principals
  • Explore alternative energy in a fun way
  • Power the LED using wind
  • Suitable for children aged four and over
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Frequently Bought Together

4M Green Science Windmill Generator + OWI 6-in-1 Educational Solar Kit
Price For Both: £9.31

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Product Information

Technical Details
Item Weight154 g
Product Dimensions21 x 14 x 8.3 cm
Manufacturer recommended age:8 years and up
Item model number3649
Number of Puzzle Pieces1
Assembly RequiredNo
Batteries Required?No
Radio Control Suitabilityindoor
Additional Information
Best Sellers Rank 98,114 in Toys & Games (See top 100)
Shipping Weight1.3 Kg
Delivery Destinations:Visit the Delivery Destinations Help page to see where this item can be delivered.
Date First Available29 Mar 2010

Product Safety

This product is subject to specific safety warnings
  • Warning: Not suitable for children under 36 months

Customer Questions & Answers

Customer Reviews

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Most Helpful Customer Reviews

4 of 5 people found the following review helpful By Thalamus on 18 May 2011
Verified Purchase
Straightforward to put together. You need a small crosshead screw driver. Good instruction leaflet.

But most importantly you need a good strong wind. Like another reviewer, found it almost impossible to blow hard enough to turn the rotor when trying to drive the motor/generator. Turns very easily when the cogs are separated but the extra resistant to turn the generator and produce the current means you need a good strong wind to turn it. The instructions say a wind speed of 15-20mph, advising an open beach or up a hill (not an enclosed garden at home then).

Also thought it might be something to leave outside so that could be watched at night, but warning on box says rain will damage the electrics eventually (they are not enclosed in a watertight frame). I'd also suggest filling the drinks bottle with stones rather than water. If it gets blown over or knocked over then the water just floods the casing and electrics. Still works but had to be quick to dry it out. Strut for the tail fin bent when it fell too.
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3 of 9 people found the following review helpful By Mr. E. C. Scobbie on 7 Dec 2010
This has been a very breathless arrangement, as there has not been any wind since the gift was received, and the children are huffing and puffing to make it work.
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Most Helpful Customer Reviews on (beta) 28 reviews
33 of 33 people found the following review helpful
Got Wind? 21 July 2008
By J. Eyres - Published on
Durability:    Educational:    Fun:   
I bought this the other day after seeing in at the Marin Headlands Visitor Center at Rodeo Beach near SF. The kit is relatively easy to build. The motor case cracked a tiny bit when we inserted the motor into the housing. It looks cool. The biggest problem is that you need a good bit of wind to make the thing spin. We found you could flick the propeller to start it, but it needed a stiff breeze to keep it going. Also, you need to put some ballast in your soda can or it will fall over. We filled ours with water and froze it for a more solid base. Cute toy, but we probably won't buy another. Next, we'll try mounting it on a long pole to get more elevation, and hopefully more wind.
18 of 18 people found the following review helpful
Great learning toy 29 April 2011
By Linda M. McIntire - Published on
Verified Purchase Durability:    Educational:    Fun:   
I bought this kit as a demonstration for our science unit on renewable/nonrenewable energy. I put it together at school in about twenty minutes, including having to take the unit apart because I put it together wrong. (Totally my fault.) The kit was made of high quality materials. The instructions were adequate. When the kit was put together, it could be demonstrated for the class merely by spinning by hand, or by using a fan. It worked outside during the onset of a rainstorm. I did not set it down as the base (empty soda bottle) is too light to withstand the wind. I would suggest filling the base with sand for stability if you wanted to set it down. I would buy other kits from this company.
26 of 31 people found the following review helpful
Don't Follow the Directions 19 April 2009
By Nancy Drew - Published on
Verified Purchase
The directions tell you to add water to a bottle for stability, but it doesn't work very well if it is truly windy outside. And, you need a lot of wind to get the thing going. Our bottle tipped over almost immediately and got the LED light wet-apparently ruining it--so we never got to see the windmill light it up. Filling the bottle with sand or dirt would have been a better suggestion. By following the directions I wasted 13 dollars!
5 of 5 people found the following review helpful
one little diode lamp 22 Oct 2010
By H. Masuda - Published on
Verified Purchase Durability:    Educational:    Fun:   
I am not a kid but wanted to make it. I was interested in the series of kits the company sells. My husband bought it to me on my birthday. He told me I can get anything, I chose this and an infrared surface temperature sensor.

It was easy to make it and it works. However, the gears and other parts look a little frail and it won't survive a category 2 hurricane. The reason I mentioned hurricane is that the diode lamp is dark unless you expose the propeller to extremely high velocity wind. Well, I guess I like something more elaborate than usual kid does, but since the diameter of the propeller is not so large, you need a strong wind. You have to run so fast to cause it. You can attach it to your bike but you have to speed which may not be so safe to do in the darkness. Also, this is not water proof, so you can't leave it outdoor.

If you want to make it valuable as an educational tool, you may want to encourage users to do some experiments such as increasing diameters and exposing it to a fan and change the velocity of the wind to see how much the intensity of the lamp changes. Ha ha.
7 of 9 people found the following review helpful
educational fun 22 July 2008
By Rose - Published on
Durability:    Educational:    Fun:   
A great educational toy for future scientists and anyone interested in alternative energy resources. My 10 year old son put this together without any help. It works great and is a good value at $16.
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