<p>In answer to your question &quot;I want to build a Great Ball Contraption and have <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?S=42055-1" rel="nofollow noreferrer">LEGO set 42055</a>, what other LEGO sets do I need to buy?&quot; the answer is: None. You've got all the bits needed, even a motor.</p>
<p><a href="https://pv-productions.com/product/lego-gbc-15-42055-building-instructions/" rel="nofollow noreferrer">Instructions to make a Great Ball Contraption from LEGO set 42055</a> are available for purchase for about USD25, and <a href="https://www.youtube.com/watch?v=0mj7qMq-Jh4" rel="nofollow noreferrer">advertisement for the instructions can be see on YouTube</a>. The are other instructions available - like <a href="https://www.bricklink.com/v3/studio/design.page?idModel=140147" rel="nofollow noreferrer">https://www.bricklink.com/v3/studio/design.page?idModel=140147</a></p>
<p>The PV instructions are just one of dozens of <a href="https://web2.rebrickable.com/sets/42055-1/bucket-wheel-excavator/#alt_builds" rel="nofollow noreferrer">alternative 42055 builds</a>.</p>

CC BY-SA 4.0
2021-05-14T05:49:02.043Z
2022-02-17T14:59:16.710Z
2022-02-17T14:59:16.710Z
Josh
<p>I want to start building a module like <a href="https://www.youtube.com/watch?v=QUjcYVaulDM" rel="nofollow noreferrer">GBC Miniloop 01</a>, but when I check the part list some are very hard to find. How should I get started with miniloops?</p>
<p>BTW, I got a very big set, Bucket Wheel Excavator 42055, and wanted to be able to do MOC's based on the parts in there. There are still many parts not included that I need for building this small GBC Mini loop.</p>
<p>Any suggestions?</p>

CC BY-SA 3.0
2017-07-30T02:43:45.990Z
The parts in the model in that video look pretty generic, it appears to be mostly bricks, which are easily substituted for other colors or even shapes. If you need a quantity of a certain piece, you can try Bricklink.
Alexander O'Mara
CC BY-SA 3.0
2017-07-30T02:46:54.107Z
@AlexanderO'Mara thanks. but parts like 3937 rocker bearing 1*2 seems hard.
hxd1011
CC BY-SA 3.0
2017-07-30T10:02:50.803Z
Rocker bearing 1*2 appears in nearly 1000 sets
https://brickset.com/parts/design-3937
Craig
CC BY-SA 3.0
2017-07-30T22:57:53.123Z
You are in luck.  [PV Productions](http://pv-productions.com/product/lego-gbc-15-42055-building-instructions/) has instructions for building a huge GBC setup out of the pieces in the 42055.
chicks
CC BY-SA 3.0
2017-07-31T04:58:25.150Z
@chicks this saves me a lot of money and time to collect parts and use what i have thanks again !
hxd1011
CC BY-SA 4.0
2019-10-10T12:36:48.213Z
42055 strikes me as being an excellent parts pack by itself - I also built a GBC module using parts of it (just a small subset), and other have too
Joubarc
<technic><building><gbc>
Any cheap Technic sets with a good variety of parts?
hxd1011
# Any cheap Technic sets with a good variety of parts?

(Asked by: username_0 on 2017-07-30)

I want to start building a module like [GBC Miniloop 01](https://www.youtube.com/watch?v=QUjcYVaulDM), but when I check the part list some are very hard to find. How should I get started with miniloops?

BTW, I got a very big set, Bucket Wheel Excavator 42055, and wanted to be able to do MOC's based on the parts in there. There are still many parts not included that I need for building this small GBC Mini loop.

Any suggestions?

**Tags:** technic, building, gbc

> **Comments:**
> **username_1**: The parts in the model in that video look pretty generic, it appears to be mostly bricks, which are easily substituted for other colors or even shapes. If you need a quantity of a certain piece, you can try Bricklink.  
> **username_0**: @AlexanderO'Mara thanks. but parts like 3937 rocker bearing 1*2 seems hard.  
> **username_2**: Rocker bearing 1*2 appears in nearly 1000 sets https://brickset.com/parts/design-3937  
> **username_3**: You are in luck.  [PV Productions](http://pv-productions.com/product/lego-gbc-15-42055-building-instructions/) has instructions for building a huge GBC setup out of the pieces in the 42055.  
> **username_0**: @username_3 this saves me a lot of money and time to collect parts and use what i have thanks again !  
> **username_4**: 42055 strikes me as being an excellent parts pack by itself - I also built a GBC module using parts of it (just a small subset), and other have too  

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## 1 answers

### Answer by username_5 on 2021-05-14. Score: 4

In answer to your question "I want to build a Great Ball Contraption and have [LEGO set 42055](https://www.bricklink.com/v2/catalog/catalogitem.page?S=42055-1), what other LEGO sets do I need to buy?" the answer is: None. You've got all the bits needed, even a motor.

[Instructions to make a Great Ball Contraption from LEGO set 42055](https://pv-productions.com/product/lego-gbc-15-42055-building-instructions/) are available for purchase for about USD25, and [advertisement for the instructions can be see on YouTube](https://www.youtube.com/watch?v=0mj7qMq-Jh4). The are other instructions available - like <https://www.bricklink.com/v3/studio/design.page?idModel=140147>

The PV instructions are just one of dozens of [alternative 42055 builds](https://web2.rebrickable.com/sets/42055-1/bucket-wheel-excavator/#alt_builds).


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