[GBC] Machines by Berthil
Below an overview of all my GBC machines with correct links and background information with newest on top. All image thumbnails link to the Youtube video. Green title means the GBC is present in my collection, with red title is demolished and no longer exists. Bold text is the Mould King set, all licensed. All machines are 100% LEGO and 100% mechanical. If a machine has a building instruction it is for free and linked below the video. About 25 machines survived as I only keep the reliable modules that are suitable for events. When put after each other the length would be about 16 meters. I will be updating this post when I create new machines (or demolish one). Some machines have a dedicated topic on Eurobricks but most of them not. Feel free to comment or ask questions about any module. This Youtube Playlist will show all GBC machine videos.
I started eight years ago with building GBC machines when I saw a big circle of machines at LEGO World Utrecht while being an exhibitor myself with a modular squash center and RoscoPC F1 models. After that I started building the more difficult Akiyuki machines, for fun and to learn from them. This would not have been possible without the Akiyuki project thread here on Eurobricks! It wasn't long before I designed my own GBC and actually that first one has been the most successful one to date (Rainbow Wave). Since then I've build over 30 machines and exhibited all of them on several events, mainly LEGO World Utrecht. A highlight was the invitation to show 3 machines to Eva Longoria in a very popular Spanish live TV show called El Hormiguero.
Crane Loader Type 2
Re-design and modernization of the Akiyuki Train Loader for the Type 2 train. Many modifications were needed to run the bigger Type 2 train. Drive and timing system replaced by a long gear rack and a clutch switch.
Length 99 cm (with three train tracks)
3298 parts
Building Instruction
Wall Wave
A Wave up a Wall. This LEGO Great Ball Contraption has a switch to drive by hand and an option to re-route the balls into the inbox.
Length 34 cm
1945 parts
Building Instruction
Rollercoaster
Fully mechanical Rollercoaster with 24 Carts and one Power Functions XL motor. Only Light Bluish Gray tracks were used, tracks gaps to align the tracks correctly are filled with rigid hoses.
Length 119 cm
5011 parts
Building instruction not available.
Inception
Machine with three flipping cubes and steppers create a never ending ball path for four balls. Based on the Penrose Stairs from Yosuke Ikeda. The machine is operated by hand and needs a soft touch to let it work well. Technically not a GBC but the intention was/is there to create one with the same concept. For this version the x45 GBC balls were too light so the 18mm steel balls from Mindstorms were used. It took wo years of trail and error to create this machine.
1707 parts
Building Instruction
Push Ups
Based on the Serpentine by Akassin, runner-up in the Eurobricks TC23 GBC contest. This compact machine has an option to switch to hand crank and has a reroute to the inbox. With this it is possible to run it by hand as a stand alone machine.
Length 35 cm
1670 parts
Building Instruction
Container Transporter V3
'Akiyukification' of the Container Transposer by Geoff. The original Container Transporter by Akiyuki was controlled by a NXT, three motors and three touch sensors. The version from Geoff is 100% mechanical and timed via differentials and a timing disc, a masterpiece in engineering with 136 gears! This 'V3' version lifts these genius mechanics into a GBC frame.
Length 97 cm
3686 parts
Building Instruction
Ferris Wheel
Entrant and winner of the TC23 GBC Competition. The wheel is held together by 128 strings and has 63 ball pods. 64 were planned but the strings had too much tension with 64. Currently eight strings have been replaced by axles to make transport in a flat position to events possible.
Length 84 cm
Building Instruction not available.
TC23 entry topic
Planetary Lift
This is the feed module of the Ferris Wheel but as a stand alone GBC module. It has a straight line mechanism based on the idea of ord and others. The stepper ball feed timing has a fine-adjustment through a differential.
Length 37 cm
687 parts
Building Instruction
Mould King 26015
Parallel Steppers
A mix of my Rainbow Stepper and the Switchback idea by John Sherman. A reliable module suitable to use as a corner module and including a build-in recycle gate.
Length 29 cm
1350 parts
Building Instruction
Rimo Buckets
Original design by Rimo Yaona, reverse engineered and build together with NDL-GBC. Main principle is locking the tower turn movement which initiates the bucket turn, after the bucket turn, the tower turn movement is unlocked.
Length 76 cm
1796 parts
Building Instruction
26011 Mould King
Logarithmic Ball Counter
Original design by JK Brickworks through a ball clock which is based on the wooden ball clock by Harley Mayenschein. Ball feed idea based on the double Serpent by Fernando Quintara but rebuild to a studless back frame. Every 10th ball on the ramp is passed on to the ramp below.
Length 52 cm
881 parts
Building Instruction
Eurobricks topic
26012 Mould King
Shoot the Loop
Entry for the 2021 Great Ball Pit height challenge on Discord (runner-up). A rollercoaster GBC attempt to loop at very high speed, only six weeks of (allowed) development time! The rollercoaster cart is loaded with one ball and launched by high speed spinning wheels. The ball is unloaded at the top. All within about one second!
Length ?
Module has been demolished as it was not reliable enough for events but a great learning moment to may be create another rollercoaster GBC in the future.
Building Instruction not available.
Staggered Lift
Series of ramps that lift to move balls from left to right onto other ramps.
Length 43 cm
1541 parts
Building Instruction
Akiyuki Five Tilted Rings
Rings with pods placed under an angle pass on ball to the upper Ring. Blackout version, inbox turned 90 degrees, Lime accents.
Length 63 cm
2966 parts
Free building instruction not available because original building instruction is sold by Akiyuki under copyright.
The Zebra
Entry for the 2021 Great Ball Pit Spring Into GBC Contest on Discord (runner-up). In this contest the trapezoid flag (44676) and Technic crank shaft (2853) had to be used, preferably functional. Build in 3 days from stock parts and uses 66 of the mandatory elements in a functional way. This module has been featured by TLG.
Length 59 cm
Module has been demolished to make room for other modules.
Building Instruction not available.
Framed Robot Dreams
My version of the very attractive Robot Dreams, 1st GBC by JK Brickworks. This version is using normal gears instead of splat gears, has six robots and is build on a frame.
Module has been demolished as I unfortunately after many attempts could not get it reliable enough for events.
Length 88 cm
3353 parts
Building Instruction
Mechanical Container Transporter
Original design by Akiyuki which is controlled by a Mindstorms NXT, three motors and three touch switches. This version has one XL motor and a mechanical gearbox controlled by gears and clutches only.
Length 85 cm
Eurobricks topic
Module has been demolished as it was not reliable enough for events. A new attempt based on the Container Transposer by Geoff will be ready soon.
Building Instruction of this version not available.
Tensegrity
Based on the Tensegrity concept by JK Brickworks. The balls going down create unbalance in the Tensegrity structure but not enough to let them collapse.
Module has been demolished, it was reliable but for events it took up a lot of space and (by design) could not be moved without collapsing of the ramps.
Length 92 cm
2156 parts
Building Instruction
26006 Mould King
Akiyuki Hockey Stick Lift XXL
Original design by Akiyuki. This version has almost triple the amount of pass points to get the ball higher for purposes shown in the video.
Length 35 cm
Free building instruction not available because original building instruction is sold by Akiyuki under copyright.
Bling Color Sorter
Geneva drive ball feed with manual ball color switch through Power Functions remote and servo motor.
Module has been demolished because the ball exit with colored hoses was too cramped and too many balls dropped. Also kids tend to overpush the PF remote, a remote lasted only one event day!
Length 76 cm
1964 parts
Building Instruction (by 9V System)
Akiyuki Peanuts
Original design by Akiyuki, changes to the original design are turning the upper part 45 degrees and adding a frame for sturdiness.
Length 60 cm
Free building instruction not available because original building instruction is sold by Akiyuki under copyright.
Turntable Cup to Cup
My version of a Cup to Cup module using six 60 teeth turntables. It took a few years to get this module reliable for events.
Length 67 cm
1153 parts
Building Instruction
Eurobricks topic
Rainbow Stepper
At most GBC events there are many modules with steppers (and belts) as main mechanism. This is my attempt to make an attractive but simple stepper GBC.
Length 52 cm
946 parts
Building Instruction
26004 Mould King
Akiyuki Ball Factory V3
Original design by Akiyuki. Without doubt one of the the most iconic LEGO Great Ball Contraptions which has drawn me into building GBCs. With 15 synchronized components the Ball Factory is also one of the most complex LEGO GBC ever designed. Originally placed on two big baseplates, it was hard to relocate and reliability was a concern with balls dropping into the complex mechanisms causing jams and need for time consuming resynchronizing. This version is an attempt to make it more reliable and easier to relocate.
Length 73 cm
4381 parts
Building Instruction
Centipede
Original design by Great Ball Pit making good use of the well known Brick Separator.
Length 60 cm
Module has been demolished as it was not reliable enough for events.
Building Instruction not available.
Vertical Train Loader Unit
This is a backup module for the Pneumatic Scissor Lift below as LEGO pneumatics are not the most reliable parts in prolonged GBC use.
Length 45 cm
Building Instruction not available.
Pneumatic Scissor Lift Unit with compact Akiyuki train layout
Module to lift the balls over the train tracks with pneumatics. Inspired by the Akiyuki train layout but made much compacter to be able to run on events on a single table.
Length 70 cm, complete circuit minimum of 280 cm
Building Instruction not available, building instruction for the Compressor is available.
Rotary Dumper &Train Elevator
Original design by Akiyuki, heavily modified with a new timing system by Doug72 and counterweights to save battery and speed up the cycle. My version uses the original and faster lift but with a lock at the bottom to be able to make full use of the counterweights which in turn saves battery power of the train.
Length 80 cm (with 1 track)
2640 parts
Building Instruction
Train Loader Unit
Original design by Akiyuki. Modified (more open) version of the train loader working with V2 Akiyuki train system.
Length 58 cm (with 1 track)
Building Instruction (by Akiyuki).
Train Unloader Unit
Original design by Akiyuki. Modified version of the train loader working with V2 Akiyuki train system.
Length 49 cm (with 1 track)
Building Instruction (by Akiyuki).
Train Unit V2 (rechargeable)
Original design by Akiyuki. Modified version of the train designed around the rechargeable 8878 LiPo battery.
234 parts
Building Instruction
Roulette
100% LEGO version of a Roulette wheel with full set of 37 numbers (European style). This GBC is a buffer at the start of a full GBC circuit dispensing two balls per two seconds. The spring loaded shooters have been replaced by weights for reliability (see below).
Length 80 cm
Building Instruction not available.
Hammers
Feed module for the above Roulette with a vary large Inbox to hold many balls. Weights (part 73090b) are dropped and shoot the balls in the Roulette.
Building Instruction not available.
Ball Counter
100% mechanical counter based on the 1 to 10 ratio design by Parax77. This module has been featured by TLG.
Length 57 cm
Module has been demolished after a few events where the counter mechanism jammed repeatedly.
Building Instruction not available.
Eurobricks Topic
Ball Shooter Marble Run V2
Complete re-design to make this module GBC compliant. The balls are launched by a rotating wheel at 3000 rpm. A first version with two spinning wheels (video here) was not reliable enough. Improvement over the V1 after more than 300 hours of running; Elimination of half plate offset in the drive line, one L motor (M motor gone), longer inbox, centered exit and optimized ball gate with return lock at the top.
2362 parts
V2 Building Instruction
Building Instruction (by Dunes) without the improvements
26002 Mould King (uses flexible hoses)
Solaire
Original design by Great Ball Pit. The module uses the 40385 skateboard ramps as pathways.
Length 30 cm
Module has been demolished as it was not reliable enough for events.
Building Instruction (by 9V System)
Ball Catcher
Platform together with the Paternoster and Ball splitter. In de video is a mouse as Ball Catcher. The mouse is controlled by Power Functions. The mouse has been replaced by a motorized Wall·E of set 21303 (not in the video). Future plans are to convert this platform to the robot pathways of the Pixar movie.
Length 90 cm
Building Instruction not available.
Paternoster
Designed after the Paternoster in the Pixar Wall·E movie.
Length 33 cm
2357 parts
Building Instruction (by 9V system)
Double Bucket Wheel
Having bought two 42055 Excavators for parts to get started with GBC, this module was to see if I could put the buckets to work. It worked.
Module has been demolished, basically because it did not get much interest during events and I needed the storage room for other modules.
Length 44 cm
999 parts
Building Instruction (by 9V System)
Ball Shooter Marble Run
Original design by Akiyuki. First attempt to transform the Marble Run to a stand alone GBC compliant module with two high speed spinning wheels..
Building Instruction not available (for V2 available).
Demolished as it was not reliable enough, especially the ball intake and uncontrollable ball speed at the top.
Rainbow Wave
My first GBC. Balls are surfing on a wave of 38 Lego colors. This GBC has app. 1150 moving parts!
1988 parts
Length 93 cm
Building Instruction (first version by Courbet).
Eurobricks Topic
Akiyuki Invisible Lift
Original design by Akiyuki. I have modified this GBC up to a point where it is reliable and transportable enough to take to events. All modifications are listed here on Flickr. After about 7 days of running on event days the Power Functions XL motor breaks down and needs replacing. Where possible the red axles and blue pins were replaced by black ones.
Length 68 cm
Building Instruction (without my modifications) available in the Akiyuki topic.
Akiyuki Ball Factory
Original design by Akiyuki. First GBC build for me, for fun and to learn from. It was hard to relocate and got out of sync when balls dropped.
Module has been demolished and replaced by my V3 re-design (building instruction available).
Building Instruction available in the Akiyuki Topic.
Re-design and modernization of the Akiyuki Train Loader for the Type 2 train. Many modifications were needed to run the bigger Type 2 train. Drive and timing system replaced by a long gear rack and a clutch switch.
Length 99 cm (with three train tracks)
3298 parts
Building Instruction
Wall Wave
A Wave up a Wall. This LEGO Great Ball Contraption has a switch to drive by hand and an option to re-route the balls into the inbox.
Length 34 cm
1945 parts
Building Instruction
Rollercoaster
Fully mechanical Rollercoaster with 24 Carts and one Power Functions XL motor. Only Light Bluish Gray tracks were used, tracks gaps to align the tracks correctly are filled with rigid hoses.
Length 119 cm
5011 parts
Building instruction not available.
Inception
Machine with three flipping cubes and steppers create a never ending ball path for four balls. Based on the Penrose Stairs from Yosuke Ikeda. The machine is operated by hand and needs a soft touch to let it work well. Technically not a GBC but the intention was/is there to create one with the same concept. For this version the x45 GBC balls were too light so the 18mm steel balls from Mindstorms were used. It took wo years of trail and error to create this machine.
1707 parts
Building Instruction
Push Ups
Based on the Serpentine by Akassin, runner-up in the Eurobricks TC23 GBC contest. This compact machine has an option to switch to hand crank and has a reroute to the inbox. With this it is possible to run it by hand as a stand alone machine.
Length 35 cm
1670 parts
Building Instruction
Container Transporter V3
'Akiyukification' of the Container Transposer by Geoff. The original Container Transporter by Akiyuki was controlled by a NXT, three motors and three touch sensors. The version from Geoff is 100% mechanical and timed via differentials and a timing disc, a masterpiece in engineering with 136 gears! This 'V3' version lifts these genius mechanics into a GBC frame.
Length 97 cm
3686 parts
Building Instruction
Ferris Wheel
Entrant and winner of the TC23 GBC Competition. The wheel is held together by 128 strings and has 63 ball pods. 64 were planned but the strings had too much tension with 64. Currently eight strings have been replaced by axles to make transport in a flat position to events possible.
Length 84 cm
Building Instruction not available.
TC23 entry topic
Planetary Lift
This is the feed module of the Ferris Wheel but as a stand alone GBC module. It has a straight line mechanism based on the idea of ord and others. The stepper ball feed timing has a fine-adjustment through a differential.
Length 37 cm
687 parts
Building Instruction
Mould King 26015
Parallel Steppers
A mix of my Rainbow Stepper and the Switchback idea by John Sherman. A reliable module suitable to use as a corner module and including a build-in recycle gate.
Length 29 cm
1350 parts
Building Instruction
Rimo Buckets
Original design by Rimo Yaona, reverse engineered and build together with NDL-GBC. Main principle is locking the tower turn movement which initiates the bucket turn, after the bucket turn, the tower turn movement is unlocked.
Length 76 cm
1796 parts
Building Instruction
26011 Mould King
Logarithmic Ball Counter
Original design by JK Brickworks through a ball clock which is based on the wooden ball clock by Harley Mayenschein. Ball feed idea based on the double Serpent by Fernando Quintara but rebuild to a studless back frame. Every 10th ball on the ramp is passed on to the ramp below.
Length 52 cm
881 parts
Building Instruction
Eurobricks topic
26012 Mould King
Shoot the Loop
Entry for the 2021 Great Ball Pit height challenge on Discord (runner-up). A rollercoaster GBC attempt to loop at very high speed, only six weeks of (allowed) development time! The rollercoaster cart is loaded with one ball and launched by high speed spinning wheels. The ball is unloaded at the top. All within about one second!
Length ?
Module has been demolished as it was not reliable enough for events but a great learning moment to may be create another rollercoaster GBC in the future.
Building Instruction not available.
Staggered Lift
Series of ramps that lift to move balls from left to right onto other ramps.
Length 43 cm
1541 parts
Building Instruction
Akiyuki Five Tilted Rings
Rings with pods placed under an angle pass on ball to the upper Ring. Blackout version, inbox turned 90 degrees, Lime accents.
Length 63 cm
2966 parts
Free building instruction not available because original building instruction is sold by Akiyuki under copyright.
The Zebra
Entry for the 2021 Great Ball Pit Spring Into GBC Contest on Discord (runner-up). In this contest the trapezoid flag (44676) and Technic crank shaft (2853) had to be used, preferably functional. Build in 3 days from stock parts and uses 66 of the mandatory elements in a functional way. This module has been featured by TLG.
Length 59 cm
Module has been demolished to make room for other modules.
Building Instruction not available.
Framed Robot Dreams
My version of the very attractive Robot Dreams, 1st GBC by JK Brickworks. This version is using normal gears instead of splat gears, has six robots and is build on a frame.
Module has been demolished as I unfortunately after many attempts could not get it reliable enough for events.
Length 88 cm
3353 parts
Building Instruction
Mechanical Container Transporter
Original design by Akiyuki which is controlled by a Mindstorms NXT, three motors and three touch switches. This version has one XL motor and a mechanical gearbox controlled by gears and clutches only.
Length 85 cm
Eurobricks topic
Module has been demolished as it was not reliable enough for events. A new attempt based on the Container Transposer by Geoff will be ready soon.
Building Instruction of this version not available.
Tensegrity
Based on the Tensegrity concept by JK Brickworks. The balls going down create unbalance in the Tensegrity structure but not enough to let them collapse.
Module has been demolished, it was reliable but for events it took up a lot of space and (by design) could not be moved without collapsing of the ramps.
Length 92 cm
2156 parts
Building Instruction
26006 Mould King
Akiyuki Hockey Stick Lift XXL
Original design by Akiyuki. This version has almost triple the amount of pass points to get the ball higher for purposes shown in the video.
Length 35 cm
Free building instruction not available because original building instruction is sold by Akiyuki under copyright.
Bling Color Sorter
Geneva drive ball feed with manual ball color switch through Power Functions remote and servo motor.
Module has been demolished because the ball exit with colored hoses was too cramped and too many balls dropped. Also kids tend to overpush the PF remote, a remote lasted only one event day!
Length 76 cm
1964 parts
Building Instruction (by 9V System)
Akiyuki Peanuts
Original design by Akiyuki, changes to the original design are turning the upper part 45 degrees and adding a frame for sturdiness.
Length 60 cm
Free building instruction not available because original building instruction is sold by Akiyuki under copyright.
Turntable Cup to Cup
My version of a Cup to Cup module using six 60 teeth turntables. It took a few years to get this module reliable for events.
Length 67 cm
1153 parts
Building Instruction
Eurobricks topic
Rainbow Stepper
At most GBC events there are many modules with steppers (and belts) as main mechanism. This is my attempt to make an attractive but simple stepper GBC.
Length 52 cm
946 parts
Building Instruction
26004 Mould King
Akiyuki Ball Factory V3
Original design by Akiyuki. Without doubt one of the the most iconic LEGO Great Ball Contraptions which has drawn me into building GBCs. With 15 synchronized components the Ball Factory is also one of the most complex LEGO GBC ever designed. Originally placed on two big baseplates, it was hard to relocate and reliability was a concern with balls dropping into the complex mechanisms causing jams and need for time consuming resynchronizing. This version is an attempt to make it more reliable and easier to relocate.
Length 73 cm
4381 parts
Building Instruction
Centipede
Original design by Great Ball Pit making good use of the well known Brick Separator.
Length 60 cm
Module has been demolished as it was not reliable enough for events.
Building Instruction not available.
Vertical Train Loader Unit
This is a backup module for the Pneumatic Scissor Lift below as LEGO pneumatics are not the most reliable parts in prolonged GBC use.
Length 45 cm
Building Instruction not available.
Pneumatic Scissor Lift Unit with compact Akiyuki train layout
Module to lift the balls over the train tracks with pneumatics. Inspired by the Akiyuki train layout but made much compacter to be able to run on events on a single table.
Length 70 cm, complete circuit minimum of 280 cm
Building Instruction not available, building instruction for the Compressor is available.
Rotary Dumper &Train Elevator
Original design by Akiyuki, heavily modified with a new timing system by Doug72 and counterweights to save battery and speed up the cycle. My version uses the original and faster lift but with a lock at the bottom to be able to make full use of the counterweights which in turn saves battery power of the train.
Length 80 cm (with 1 track)
2640 parts
Building Instruction
Train Loader Unit
Original design by Akiyuki. Modified (more open) version of the train loader working with V2 Akiyuki train system.
Length 58 cm (with 1 track)
Building Instruction (by Akiyuki).
Train Unloader Unit
Original design by Akiyuki. Modified version of the train loader working with V2 Akiyuki train system.
Length 49 cm (with 1 track)
Building Instruction (by Akiyuki).
Train Unit V2 (rechargeable)
Original design by Akiyuki. Modified version of the train designed around the rechargeable 8878 LiPo battery.
234 parts
Building Instruction
Roulette
100% LEGO version of a Roulette wheel with full set of 37 numbers (European style). This GBC is a buffer at the start of a full GBC circuit dispensing two balls per two seconds. The spring loaded shooters have been replaced by weights for reliability (see below).
Length 80 cm
Building Instruction not available.
Hammers
Feed module for the above Roulette with a vary large Inbox to hold many balls. Weights (part 73090b) are dropped and shoot the balls in the Roulette.
Building Instruction not available.
Ball Counter
100% mechanical counter based on the 1 to 10 ratio design by Parax77. This module has been featured by TLG.
Length 57 cm
Module has been demolished after a few events where the counter mechanism jammed repeatedly.
Building Instruction not available.
Eurobricks Topic
Ball Shooter Marble Run V2
Complete re-design to make this module GBC compliant. The balls are launched by a rotating wheel at 3000 rpm. A first version with two spinning wheels (video here) was not reliable enough. Improvement over the V1 after more than 300 hours of running; Elimination of half plate offset in the drive line, one L motor (M motor gone), longer inbox, centered exit and optimized ball gate with return lock at the top.
2362 parts
V2 Building Instruction
Building Instruction (by Dunes) without the improvements
26002 Mould King (uses flexible hoses)
Solaire
Original design by Great Ball Pit. The module uses the 40385 skateboard ramps as pathways.
Length 30 cm
Module has been demolished as it was not reliable enough for events.
Building Instruction (by 9V System)
Ball Catcher
Platform together with the Paternoster and Ball splitter. In de video is a mouse as Ball Catcher. The mouse is controlled by Power Functions. The mouse has been replaced by a motorized Wall·E of set 21303 (not in the video). Future plans are to convert this platform to the robot pathways of the Pixar movie.
Length 90 cm
Building Instruction not available.
Paternoster
Designed after the Paternoster in the Pixar Wall·E movie.
Length 33 cm
2357 parts
Building Instruction (by 9V system)
Double Bucket Wheel
Having bought two 42055 Excavators for parts to get started with GBC, this module was to see if I could put the buckets to work. It worked.
Module has been demolished, basically because it did not get much interest during events and I needed the storage room for other modules.
Length 44 cm
999 parts
Building Instruction (by 9V System)
Ball Shooter Marble Run
Original design by Akiyuki. First attempt to transform the Marble Run to a stand alone GBC compliant module with two high speed spinning wheels..
Building Instruction not available (for V2 available).
Demolished as it was not reliable enough, especially the ball intake and uncontrollable ball speed at the top.
Rainbow Wave
My first GBC. Balls are surfing on a wave of 38 Lego colors. This GBC has app. 1150 moving parts!
1988 parts
Length 93 cm
Building Instruction (first version by Courbet).
Eurobricks Topic
Akiyuki Invisible Lift
Original design by Akiyuki. I have modified this GBC up to a point where it is reliable and transportable enough to take to events. All modifications are listed here on Flickr. After about 7 days of running on event days the Power Functions XL motor breaks down and needs replacing. Where possible the red axles and blue pins were replaced by black ones.
Length 68 cm
Building Instruction (without my modifications) available in the Akiyuki topic.
Akiyuki Ball Factory
Original design by Akiyuki. First GBC build for me, for fun and to learn from. It was hard to relocate and got out of sync when balls dropped.
Module has been demolished and replaced by my V3 re-design (building instruction available).
Building Instruction available in the Akiyuki Topic.