{"id":15140,"set_id":"9842-1","name":"Interactive Servo Motor","year":"2006","image":"sets\/9842-1.jpg","average_rating":"94","review_count":"3","url":"https:\/\/brickinsights.com\/index.php\/sets\/9842-1","image_urls":{"small":"\/crop\/small\/sets\/9842-1.jpg","medium":"\/crop\/medium\/sets\/9842-1.jpg","large":"\/crop\/large\/sets\/9842-1.jpg","teaser":"\/crop\/teaser\/sets\/9842-1.jpg","teaser_compact":"\/crop\/teaser_compact\/sets\/9842-1.jpg","generic140xn":"\/crop\/generic140xn\/sets\/9842-1.jpg","generic200xn":"\/crop\/generic200xn\/sets\/9842-1.jpg","genericnx400":"\/crop\/genericnx400\/sets\/9842-1.jpg","original":"\/crop\/original\/sets\/9842-1.jpg"},"reviews":[{"review_url":"https:\/\/www.amazon.com\/LEGO-4297095-MINDSTORMS-Interactive-Motor\/dp\/B000PM8I1G?SubscriptionId=AKIAIGQAU2PVYTRCS5MQ&tag=brickinsights-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B000PM8I1G","snippet":"Wanted to add an additional motor to my son's EV3 set. This was a great economical way to do that. It works perfectly.","review_amount":"6","rating_original":"4.7","rating_converted":"94.00","author_name":null,"embed":null},{"review_url":"http:\/\/click.linksynergy.com\/deeplink?id=TZZm7nNaZzs&mid=13923&murl=https%3A%2F%2Fwww.lego.com%2Fen-US%2Fproduct%2F9842","snippet":"One of the things that the Mindstorms NXT system has improved on from hugely from the older RIS system is the motors which come with the kit. These motors have alot of internal gearing, reducing the rotation speed and meaning that many robots can be built with not much external gearing. The shape is a result of this long gear chain inside, but means that a robot can be built without too many large pieces. This unfortunately also means that these motors are hard to build into technic models. The motors have over 10 times the torque of the old RCX motors at half the rotation speed.","review_amount":"12","rating_original":"4.6667","rating_converted":"93.33","author_name":null,"embed":null},{"review_url":"https:\/\/brickset.com\/reviews\/set-9842-1","snippet":null,"review_amount":"2","rating_original":"0","rating_converted":null,"author_name":null,"embed":null}]}