Name: LEGO Dacta Technic Mechanical Engineering
Brand: LEGO
SKU: 9665-1
Rating: 4.5 (17 reviews)

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My Collection

I own this set

I want this set

Set Details

Set number

9665-1

Name

Mechanical Engineering

Theme

Dacta

Subtheme

Technic

Year

2003

Availability

Retired

Pieces

318 (PPP $0.47)

Set Pricing

Retail price

$149.99

Value

$350.00

Growth

+133.35%

Annual growth

+4.33%

Quick Buy

eBay

Buy

Price

~$360.50

Bricklink

Buy

Lowest price

$350.00 (MX)

*Listings are for new/sealed sets.

Set Predictions

1 year forecast

$365.20

5 year forecast

$424.17

$420

$436

9665 Mechanical Engineering is estimated to be worth between $420 - $436 in 5 years (new/sealed).

Mechanical Engineering Reviews

17 ratings

4.5

Collectors

Investors

Subtheme Analysis

Dacta / Technic

Sets

Years

1984 - 2003

Annual growth

+3.01% (this set +4.33%)

This set's annual growth (CAGR) vs. subtheme

Community Stats

Mechanical Engineering currently ranks #9 out of the top most owned sets in Dacta Technic.

#1Technic I Simple Machines Set

#2Technic II Powered Machines Set

#3Simple Mechanisms Set

#4Gears Set

#5Levers Set

#9Mechanical Engineering

#10Control Lab Serial Interface & Adapter

#11Structures Set

About Dacta Technic

The LEGO Dacta Technic theme is a segment of the LEGO Dacta (later rebranded as LEGO Education) line, focusing on the Technic system of LEGO building. These sets are designed for educational contexts, emphasizing principles of mechanics, engineering, and applied science. Through specialized pieces like gears, axles, and beams, the Dacta Technic theme offers a hands-on approach to understanding complex mechanical concepts, making it a resource for classrooms and other educational settings aiming to teach STEM principles.

Technic consists of 30 sets that ran from 1984 to 2003. As of today, 1034 Teachers Resource Set is the most valuable Technic set with an estimated new/factory sealed value of $1,013.

	(US) eBay listings for Mechanical Engineering	~$339.50 -3.0%
	(MX) BrickLink store Bricks Store Mexico	$350.00


	9609 Technology Resource Set Theme / Subtheme Dacta / Technic Year 1995 Pieces 1,718 Availability Retired Buy this set at eBay	Value $732.83 I own this set I want this set

	1034 Teachers Resource Set Theme / Subtheme Dacta / Technic Year 1985 Pieces 1,501 Availability Retired Buy this set at eBay	Retail $129.00 Value $1,012.53 Growth 684.9% Annual growth 7.5% I own this set I want this set

	9701 Control Lab Building Set Theme / Subtheme Dacta / Technic Year 1995 Pieces 557 Availability Retired Buy this set at eBay	Retail $149.00 Value $389.00 Growth 161.1% Annual growth 3.5% I own this set I want this set

	9700 Technic Control Centre Theme / Subtheme Dacta / Technic Year 1987 Pieces / Minifigs 471 / 4 Availability Retired Buy this set at eBay Bricklink	Value $330.23 I own this set I want this set

	1092 Technic Control II Theme / Subtheme Dacta / Technic Year 1986 Pieces 463 Availability Retired Buy this set at Bricklink	Retail $191.00 Value $244.62 Growth 28.1% I own this set I want this set

	9618 Structures Set Theme / Subtheme Dacta / Technic Year 1997 Pieces 463 Availability Retired Buy this set at Bricklink	Retail $79.90 Value $121.04 Growth 51.5% Annual growth 1.6% I own this set I want this set

	1090 Technic Control 1 Theme / Subtheme Dacta / Technic Year 1986 Pieces 404 Availability Retired Buy this set at Bricklink	Retail $139.99 Value $231.46 Growth 65.3% Annual growth 1.4% I own this set I want this set

	1032 Technic II Powered Machines Set Theme / Subtheme Dacta / Technic Year 1984 Pieces 278 Availability Retired Buy this set at eBay Bricklink	Retail $79.99 Value $219.00 Growth 173.8% Annual growth 1.7% I own this set I want this set

	9630 Simple Mechanisms Set Theme / Subtheme Dacta / Technic Year 1997 Pieces 277 Availability Retired Buy this set at eBay Bricklink	Retail $79.99 Value $303.40 Growth 279.3% Annual growth 4.1% I own this set I want this set

	9605 4.5V Technic Resource Set Theme / Subtheme Dacta / Technic Year 1995 Pieces 268 Availability Retired Buy this set at Bricklink	Retail $74.99 Value $418.09 Growth 457.5% Annual growth 6.3% I own this set I want this set

	9702 Control System Building Set Theme / Subtheme Dacta / Technic Year 1993 Pieces / Minifigs 221 / 2 Availability Retired Buy this set at eBay Bricklink	Value $183.72 I own this set I want this set

	1030 Technic I Simple Machines Set Theme / Subtheme Dacta / Technic Year 1985 Pieces 179 Availability Retired Buy this set at Bricklink	Retail $74.99 Value $115.93 Growth 54.6% Annual growth 2.6% I own this set I want this set

	9604 Technic and Pneumatic Elements Theme / Subtheme Dacta / Technic Year 1992 Pieces 124 Availability Retired Buy this set at eBay	Retail $36.95 Value $93.81 Growth 153.9% Annual growth 3.1% I own this set I want this set

	1038 Universal Buggy Theme / Subtheme Dacta / Technic Year 1985 Pieces 119 Availability Retired Buy this set at eBay Bricklink	Value $99.94 I own this set I want this set

	9937 Small Chain Links Theme / Subtheme Dacta / Technic Year 1998 Pieces 108 Availability Retired Buy this set at Amazon ebay	Retail $7.49 Value $13.03 Growth 74.0% Annual growth 2.0% I own this set I want this set

	9617 Introducing Air Power Theme / Subtheme Dacta / Technic Year 1997 Pieces 89 Availability Retired Buy this set at eBay Bricklink	Retail $29.99 Value $153.01 Growth 410.2% Annual growth 6.5% I own this set I want this set

	9614 Pulleys Mini Set Theme / Subtheme Dacta / Technic Year 1993 Pieces 77 Availability Retired Buy this set at eBay Bricklink	Retail $14.99 Value $33.51 Growth 123.5% Annual growth 2.7% I own this set I want this set

	9616 Wheels and Axles Set Theme / Subtheme Dacta / Technic Year 1997 Pieces / Minifigs 74 / 1 Availability Retired Buy this set at eBay	Retail $14.99 Value $31.38 Growth 109.3% Annual growth 3.2% I own this set I want this set

	9610 Gears Set Theme / Subtheme Dacta / Technic Year 1993 Pieces / Minifigs 67 / 2 Availability Retired Buy this set at eBay	Retail $12.50 Value $28.86 Growth 130.9% Annual growth 3.8% I own this set I want this set

	9612 Levers Set Theme / Subtheme Dacta / Technic Year 1993 Pieces 62 Availability Retired Buy this set at Amazon eBay	Retail $14.99 Value $29.57 Growth 97.3% Annual growth 2.9% I own this set I want this set

	9938 Conveyor Belt Links Theme / Subtheme Dacta / Technic Year 1995 Pieces 38 Availability Retired Buy this set at Bricklink	Retail $6.25 Value $12.37 Growth 97.9% Annual growth 3.5% I own this set I want this set

	9848 9V Lamps Theme / Subtheme Dacta / Technic Year 1997 Pieces 9 Availability Retired Buy this set at Bricklink	Value $34.01 I own this set I want this set

	9615 Motor Add-On for Simple Mechanisms Theme / Subtheme Dacta / Technic Year 1997 Pieces 3 Availability Retired Buy this set at eBay Bricklink	Retail $31.99 Value $45.27 Growth 41.5% Annual growth 1.3% I own this set I want this set

	9751 Control Lab Serial Interface & Adapter Theme / Subtheme Dacta / Technic Year 1995 Pieces 2 Availability Retired Buy this set at Bricklink	Value $135.53 I own this set I want this set

	9876 Large Turntables Theme / Subtheme Dacta / Technic Year 1992 Pieces 2 Availability Retired Buy this set at Bricklink	Retail $8.75 Value $17.98 Growth 105.5% Annual growth 3.7% I own this set I want this set

9665 LEGO Dacta Technic Mechanical Engineering

Set Value (New/Sealed)

For Sale (New/Sealed)

Sets in Dacta / Technic

9609 Technology Resource Set

1034 Teachers Resource Set

9701 Control Lab Building Set

9700 Technic Control Centre

1092 Technic Control II

9618 Structures Set

1090 Technic Control 1

1032 Technic II Powered Machines Set

9630 Simple Mechanisms Set

9605 4.5V Technic Resource Set

9702 Control System Building Set

1030 Technic I Simple Machines Set

9604 Technic and Pneumatic Elements

1038 Universal Buggy

9937 Small Chain Links

9617 Introducing Air Power

9614 Pulleys Mini Set

9616 Wheels and Axles Set

9610 Gears Set

9612 Levers Set

9938 Conveyor Belt Links

9848 9V Lamps

9615 Motor Add-On for Simple Mechanisms

9751 Control Lab Serial Interface & Adapter

9876 Large Turntables