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  • bjpraha
    2020-02-21 17:35:41

    Perfect packaging, the engine worked on the first try.

  • Judge
    2018-01-16 06:09:13

    It comes with one RGB fast included which put a little of coluor in this great ingenious toy. Excellent chrome and product finish with a very competitive price.

  • 2019-08-23 03:25:42

    Work perfectly, up to 3v generator with led connected. Noisy, but hight speed.

  • 2019-04-05 05:01:13

    bien reçu pas de casse il fonctionne bien

    2019-02-25 04:27:45


  • ddudda
    2019-10-20 02:50:44

    EN: Very good concept but an arrival I had to tighten the screws and a stopper for the piston rods was needed so that the piston could be guided better because otherwise the piston would eat away the glass of the cylinder walls... Oiling the moving parts should be done too but no oil between the piston and the cylinder would not be good.. But after that it works very well 😊 And if someone asks: can a candlelight power the engine? - I tried it and it seems like it does not generate enough heat👋 DE:

  • AEKron
    2019-10-03 20:54:41

    I wanted something like this for years, but the prices were keeping me away. This is priced right and it works. The multi-colored flashing LED is a nice touch, as well as the generator. The base plate is nicely anodized as is the frame. I took off the LED, put on a voltage regulator, and I can just barely get an Arduino Nano to flash three LEDs in patterns. Cool! I took off one point each for Quality and Appearance because of the cheesy pipe bracket holding the motor on and the rubber band. I will

  • 2020-07-09 08:40:03

    Very cool! My daughters love it and I hope it inspires them further into science and engineering!

  • 2020-05-22 03:52:22

    لم يتم استلام الطلب

  • alopez
    2020-03-14 12:17:23

    Very happy with purchased. It feels solid, works well. Came with a spare tube and with the led attached already.


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