Kierna

Oh man, awesome! I love the dragster and the midget sprinter. Very cool!

WOW! Absoloutly huge... looks like optimus prime The drum brakes are very clever! If you were to add anything, a big grey dump truck tipper would be my vote

Why? This is Model Team.

Go ahead, I hope your visitors like it! You are right, the big motorcycle wheels are a very large scale, 1:6 or so. I think we bike builders deserve a big scale though, because it is very dificult to achive full detail in a motorcycle MOC of any scale. Have you seen this thread? It covers building very large scal tyres from smaller lego parts. http://www.eurobricks.com/forum/index.php?showtopic=42681&st=0

Has anyone played the playstation games ROLLCAGE? They were awesome, and had cars like this that could drive upside down. This MOC is great, fast, light and simple. Like a motorcycle

Hey mate, I think I can solve the power problem... simply add another gear to each axle and run two chains! It aught to transmit twice as much powerbut it will probably need some reinforcement on the motor output axle. Also, make sure the chain is linked in the direction in this picture, I've tested it to be stronger this way.

Just clarifying, I didn't build the bike in the youtube video, it's just proof a Mindstorms bike can self balance. I'll build this when I have a spare $200 AUD. I just spent $150 on bricklink for parts for my power functions bike design...

Small Block Chevy, more or less. Details include: -White ceramic coated zoomie headers -Dual four barrel carbs -8-point distributor and spark plug boots under headers (no cables in this render) -Fuel pump to carbies (red 180 degree connector on crankshaft, no fuel lines in this render) -Braced supercharger pulley with idler Who wants to see a dragbike built around it?

Nice one, tough HQ grille! I am lucky enough to hear/see a purple, flat tray, supercharged 292 HQ ute cruise around near my place fairly often. it's a beauty!

I have the novel idea of making this chase my power functions superbike. I deliberately made it somewhat bland and unnatractive, like real police vehicles. The target: The superbike can have LED lights, with any colour lens, installed as tail lights. One sensor on the police motorcycle is for color, to chase. The other, an accelerometer, for balance. One NXT servo motor, for power, geared up 40:8 (5x). theoretical speed up to 6.5 mph. One NXT servo motor for steering, with very high steering lock, some 50 degrees from center each way. About 20 degrees of steering rake,1 unit offset, around 3 units trail. Front fork suspension (represented in this image) Power motor acts as rear single-sided-swingarm suspension. Yellow extra hard shock absorber. Very low center of gravity. 45 degree maximum lean angle. Proof of concept: (I didn't make this, it shows that a NXT bike can balance itself) http://www.youtube.com/watch?v=VxiOy4QzD7I

Damn those youtube embeds... I ended up watching a Ducati walking a Porche on a runway, all without leaving eurobricks... Cool camper, allthough don't think all Australians love 4WD's and the bush! Nor do we love Kangaroos. We love to hunt them

Excelent work! That's the first Power Functions ATV I have seen! Very accurate, you clearly have knowledge of the real machines. The Spoilers used as mudguards look tops It must do wheelies with that gear rato! Keep up the good work.

Just awesome. The rear swingarm is perfectly formed, and your use of the hubcap as a brake rotor at the front is a perfect.

As a science fiction motorcycle, this thing is pretty cool. The color sceme is a little childish, but the form is spot on. The "DUST" "ONYX" and "FROST" bikes all have better color schemes, and the same excelent shape and proportions. They look to have been designed straight from the pages of the mid 80's Andy Sparrow "bloodrunners" comic, which was the archetype for nose down, tiny-tail-up, futuristic motorcycle design. I might just have a look for the Dust Roborider!

Too cool! I'd love a real Kombi to haul my bikes in. Nice engine, did the original model have one at all?

Thanks mate! Bikes can be tricky, but there are easy places to start. Choppers are easy, because they are not at all compact, and have no rear suspension. Rake is easy to achieve by making the steering head angle 90o perpendicular to the top frame tube.

Tut, tut, read the fine print Rear suspension mounted underneath the motor. It isn't visible, and is hard to explain. In the not so fine print, it says dragbike. For reference, a twin turbo ducati dragbike.

A new way of putting 64.2x20s tyres onto their rims. Squeeze them onto the inner lip and be rewarded with curvy motorcycle tyres! I wish I could offer you higher image quality... but I just can't see a reason to upgrade from my Nokia 6300 yet. This bike is the later, matured evolution of a bike I built in 2010 (bottom image). It is a traditional streetfighter. This bike has functional pullrod rear suspension ( ala Buell) mounted underneath the the engine. It also has the motor barrels mounted on opposing 3x7 angled liftarms for a narrower "V" engine angle. This not only looks authentic, but allows the frame of the bike to be attached directly to the motor, whilst the swingarm and rear suspension ar mounted to the crankcases. There is a 16 tooth gear at the center of the crossplane crankshaft, with a chin running to the front sprocket. No drivechain in these pics.

Glad to hear of some interest, Philo! I think to most, motorcycles are black magic, people steer clear... Huge credits to you and your webpage. It was from your PF-XL specs that I decided gear ratio's. However, I cannot find any information about the NXT bike you buiilt. Is it on your webpage? Also, THANK YOU for having a few photo's of the large, scaled up technic models at Legoland. They are hard to find, and they fascinate me!

Fantastic!

Sorry for the late reply, and sorry about the dodgy image embedding. I'll preview this post! Here are some more images, and answers/response to your questions/comments (in order). Lost_in_noise said Correctomundo, however, only telescopic front suspension systems (MTB, most motorcycles) are called forks. Motorcycle, MTB rear suspension is most often "swinging arm" type, and this bike has a single sided swinging arm, ala Ducati 916, 1098, Panigale. For more information see Car Bibles.com "Motorbike Suspension Bible" at http://www.carbibles.com/suspension_bible_bikes.html Locoworks said Flywheels on RC motorcycles are in fact for keeping the machine upright at very low speeds, or even at a stop for a very short amount of time. They are optional and removable, and add large ammounts os unsprung weight (the weight placed on the road, not held up by suspension components.) The faster a two wheeled vehicle travels, the more stable and upright it will stay. This is due to centrifugal force of wheels, among other things. I am confident in my designs abilty to stay upright at low-medium speeds. Which brings me nicely to closing remarks. (SNIPE, thank you for re posting the sillhouette image ) drdesignz said I do not have a working prototype. I haven't the parts, yet. I have built the swingarm to verify drivechain length and tension. As for proof of concept behold this youtube video of a self balancing NXT bike. http://www.youtube.com/watch?v=VxiOy4QzD7I The program it runs was coded by the Delft University of Technology, Bicycle Dynamics devision. It stays upright by reading from the on board Accelerometer sensor, and "steers into the direction of lean". A man would merely need to practice controlling this machine by traditional remote input to match and exceed the NXT's abbility to keep the machine upright. As afforementioned, the faster a two wheeled vehicle travels, the more stable it becomes, and the more reluctant to lean from vertical. My design has adjustable gear ratio's, from speeds of 7-12-16 MPH. I'll see what works best when I build it, I don't know what it will weigh. It hasn't many parts. Alanp said A video of a working human controlled rc bike, with no gyroscope or flywheel. More proof of concept. Alanp, you are absoloutly right about the geometry being key to making a two wheeler boogey. Rake, trail, and offset are all VERY important, and they are often completely ommited from the few lego bikes I find on the net. If any of you are interesed, enjoy the Wikipedia page on Bicycle and Motorcycle Dynamics at http://en.wikipedia.org/wiki/Bicycle_and_motorcycle_dynamics.

A quick answer, from a fellow Australian no less! Thanks Kristel.

Transparent tackle boxes with adjustable compartments meticulously aranged and sorted are my weapon of choice. I'm a motorcycle builder, so thankfully my sheer volume is nice and low.

I have designed a power functions motorcycle, with no stabilizers or outriggers, a real leaning motorcycle. 100% Lego. Sorting out a bricklink order, I hope it to become the first succesful Technic Cussoo. 300 or so parts.

I have designed a full-function power functions motorcycle (that means leaning into turns) and have every intention to lubricate its drivechain, just like I do on my real bike. Oil for steel, silicone for plastics and electronics.