Name: Interactive Servo Motor
Brand: LEGO
SKU: 9842-1
Rating: 94 (3 reviews)

Interactive Servo Motor is LEGO set 9842-1. It has a score of 94. This is good compared to all other sets. The set is recommended by 0 reviews, based on 2 scored reviews and 3 reviews total. It is ranked in the top 2.78% scored sets on Brick Insights. We know this set was released in 2006, and it is categorised in Mindstorms.

LEGO Amazon

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Average rating

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We calculate the average rating when we've found two or more scored reviews. This set is good compared to all other sets. Read more about the ratings distribution chart here.

Recommendations

Indifference 67%

A review is considereded a recommendation when its score is above the reviewers median score or if it's explicitly said so in the review. Read more in our article about recommendations.

Price Per Part (PPP)

unknown

We do not currently know how the average price per part for this set compares to other sets.

All prices are in $USD, adjusted for inflation. This set is compared to other sets categorised as Robotics & Electronics. Read more about this in our article about price comparisons.

PPP is a guide, not a rule, and affected by the type of parts included. A set containing small generic parts generally have better PPP than one containing larger specialized parts.

Price Per Minifig (PPM)

unknown

We do not currently know how the average price per minifig for this set compares to other sets.

All prices are in $USD, adjusted for inflation. This set is compared to other sets categorised as Robotics & Electronics. Read more about this in our article about price comparisons.

PPM only takes the number of minifigs into account and discards everything else. It's a guide, not a rule.

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Review breakdown

Scored reviews

amazon.com Recommendation: meh 4.7 / 5 → 94 / 100

LEGO Recommendation: meh 4.67 / 5 → 93 / 100

Unscored reviews

Brickset Recommendation: no

Set information

Set ID: 9842-1
Name: Interactive Servo Motor
Parts: 1

Retail price (USD):
Original: 24.99
Inflation adjusted: 31.69

More sets:

2006 Mindstorms NXT

Statistics:

Best Mindstorms sets of all time Best NXT sets of all time

Other sites:

Brickset LEGO Amazon

Purchase:

LEGO Amazon

Some of these links are affiliate links. When you click through to purchase something, Brick Insights gets a couple of cents. It helps cover some of the costs of running the site. Thanks!

amazon.com

Recommendation: meh 4.7 / 5 from 6 reviews

Wanted to add an additional motor to my son's EV3 set. This was a great economical way to do that. It works perfectly.

This score from amazon.com is an aggregate of 6 reviewers. The snippet above represent only one of them.

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LEGO

Recommendation: meh 4.67 / 5 from 12 reviews

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.

This score from LEGO is an aggregate of 12 reviewers. The snippet above represent only one of them.

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