doug72

Can you explain more how this functions ? It seems to me that the two "L" motors will be fighting each other when the "M" motor is stationary and differential body is not rotating..

Parts received today and both wheels now re-built. and much more sturdy. Had slight concerns that on a tiled floor it might skid when turning so two extra rubber tires now carried on board as spares just in case more grip for steering needed. Distance between wheels reduced, so will have to make a new display stand for static running as it catches on wheels. Tested on tiled floor and carpet and performs OK without skidding. Made a quick video made to demonstrate, turn up the sound it makes a lot of racket now, Ear Defenders are advisable ! Will be making a better new entry video over the next few days.

Nice digital images but when are we going to see WIP images of actual construction ?

Its looking "Wacky"

Mark 3 wheel increased the overall width of my machine and various connections a bit untidy so rejected. Mark 4 wheel now built: Took a while to get a satisfactory positioning of the six spokes and at same time keep pivot points for each foot equally spaced. Finally achieved it with spokes connecting in between to the two rims & keeping them spaced correctly apart, much tidier and stronger. Note, wheel destructor cone not shown but is attached to the two blue pins in wheel centre. Now happy with the wheels at last. This might work for a horizontal spinner with arms instead of feet.

Agree, your comments. I have no idea how to use LDD to design MOCs instead I prefer build it and see if it works, if not try again. MOCs evolved its all part of the build process. Likewise with making video's I have very little experience making them, whilst others have very good skiills.

I feel the contest title sets the tone i.e. Wacky Wheels.

Had my eyes fixed last year. Meanwhile - One wheel re-built from the existing two original wheels to determine the best spoke positions on gear ring to avoid awkward connections for the feet. Tested running with only one wheel spinning in air and the effect is Wow ! New parts to build other wheel arrive in next 2 days.

Good to see this project continuing.

Thanks, Yes it does makes quite a load noise on a tiled floor !! Feet now more like the original. Found enough feet parts after a major reorganising of my Lego spares boxes. Should get the extra gear curved racks in next day or so. Now modified one wheel with new feet but with only one rim and its very hynotic looking at it when the wheel is at full speed.

Update:- I am improving the Boydell Wheels to replicate the original better and to fix an issue with wheel axles. The Boydell wheels tended to slip on the axles as only restrained by the wheel hub and a half bush on the yellow 11L axle at the outer end. Now fitted black 12L axles which allows for much better end restraint at the outer ends. Awaiting more 1/4 circle gear quadrants in order to build new improved wheels which have two rims each side with feet attached in between with improved foot as per original. Feet around each wheel will be alternate:- Black-Yellow-Black and Yellow-Black - Yellow giving an alternating wasp stripe effect and will become another wacky function as the wheels rotate to dazzle and blind opponents. When new parts arrive I will post images and update entry topic.

You could try a PF switch easier to control or even a spring loaded PF switch using a rubber band.

Like your brick mine ejector video. I had similar thoughts using Lego balls but no space available to mount it on my TC12 entry.

New big feet now installed in alternate Black and Yellow. Now tested on a tiled floor and works OK forward but when travelling in reverse tends to slide on smooth tils when steering. Should be OKwhen running on a carpet. Makes quite a racket when at full speed and wheel feet are in a blur. Can you spot the drivers personal protection device. Click image to view

Thanks, thats what I thought. At the time I didn't have enough parts to get a uniform colour scheme ! Since reorganising my Lego work space found enough to be able use alternate black and light grey for 12 feet per wheel. Wheels with small feet require 32. Will use the large feet and amend my entry post.

I.m still tinkering ! When I first started to build the Boydell wheels I had intended to use LEGO Triangle Beam Type 1 (2905) for the each “foot” but in trials decided there would not be enough power to turn them.

 Instead I use LEGO Beam 3 x 3 T-shaped (60484) to build each foot. Now re-tried the Triangle beams again with new batteries and the Boydell Stomper judders along quite well, giving the driver an even more shaky ride. Which do you think looks / works best ? See image and short video. 1/. Small feet or 2/. Large feet Your comments please. I still have time to modify my entry topic and make new video. Thanks IMG_4944 by Doug Ridgway, on Flickr Video: click image MVI_4943 by Doug Ridgway, on Flickr

Thanks for all the comments about this build, its been a crazy build. Now entered PS I'm not very good at making video's and controlling the vehicle at the same time, hence the "bump"

2. The Boydell Stomper - Mark IV I present my entry for the TC12 Wacky Wheels contest. My “Wacky Wheels” vehicle is based on old technology that used a type of wheel invented by Boydell in 1846 which preceded caterpillar tracks in an attempt to allow heavy traction engines and artillery guns to cross soft ground and the rear wheel steering used on the weirdest tank ever built, the experimental Russian Tsar Tank built in 1914 which was a complete failure !! My wacky wheel vehicle is just as crazy, is surprisingly fast and agile and includes a driver ! These wheels can really wack the ground and opponents. Wacky vehicle is 31L wide x 30L high x 44L long.
 Powered by an L motor for drive to the Boydell wheels and various other functions.
 Servo motor for steering. Two PF receivers, V1 for servo motor and V2 for L motor. 

PF Control:-
Two controllers on different channels are used for steering and drive. Wacky Functions:-
 The “L” motor drives:- 1/. Both Boydell wheels at a 5:1 reduction via a custom built heavy duty differential using a Z60 turntable and three knob gears within a 5 x 7 frame. 
 The differential Z60 gear ring drives via gearing & lay shafts other functions for:- 
2/. Working transverse dummy Vee 8 engine with cooling fan and two flaming exhausts. 3/. Rocking motion of Drivers seat up & down which also activates a flashing beacon. 4/. Rotating radar dish with separate PF IR immobilising ray device. 5/. Two contra rotating drills to clear any obstructions 
 6/. Low level “daisy cutter” with bi-directional cutting blades. 7/. Destructor hubs added to the wheel centres to combat other vehicles. 
 8/. Wheel feet colour scheme to dazzle opponents as they rotate. 9/. Scary "face" and very noisy to distract opponents. Servo Motor 10/. Steering with angle of turn limited by gearing to 40 degs. left or right. 11/. Remote steering direction indicator (horses head) at front of vehicle. Race Tactics Use radar scanner to seek out opponents and use PF destructor beam to imobilise their PF channels. Deafen them as I come up behind them. Driver then uses his personel protection device to puncture the rubber tires. Eliminate the low profile ground hugging contestents with the daisy cutter then stomp remaining contestents. Front view with Pit Crew at the ready. YouTube video: best with sound full voluume Part 1: - Wheels jacked up on display stand - close up view of wacky functions. Part 2:- Running on a tiled floor - turn up the sound to hear the clatter of feet. Ear defenders required. Part 3:- Running on carpet, a little bit quieter.

Once you put an entry into the "Entry Topic" and if you need to make any changes I assume you notify this in the discussion topic. Is that correct ?

Radar dish & PF jamming dish are now seperate and the Driver now has a personel protection device. To be revealled when I post on the entry topic.

Already got one - the radar dish is also an immobilising ray gun for jamming PF signals.

Shame you can't carry on it was looking good. I know a good driver with 10 mins of experience !!

Thanks, I had another idea for a wacky conveyor function to drop Lego balls onto the ground but ran out of space to fit it, and drive it from L motor.

Wacky functions demonstration: A short video of the wacky functions - note its jacked up to allow wheels to rotate. ps. It’s only running at half speed. (click image to see video) Hope to post entry this week after I make a better video for the Entry topic.

Using the tip of a sharp knife ease up one corner of the sticker, and then grip it with small pliers and slowly pull until you can grip with your fingers. It helps to warm the parts in hot water first. I use this method to remove temporary route sign stickers on cycle routes and works for Lego stickers as well. The key is a slow and steady pull.