Technic 2WD forkless motorcycle/chopper w/ suspension: A LEGO® creation by Johnny 5 : MOCpages.com

Technic 2WD forkless motorcycle/chopper w/ suspension

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After seeing the Bimota Tesi I wanted to try my hand at a forkless lego bike. The bike is 2WD (when the motor moves, both wheels spin) has front and back suspension, and steering.

About this creation

The challenging part was to get suspension, steering and the front wheel drive system working together. The trick was to have a leading arm suspension, something like a double wishbone for the steering and to use a couple of universal joints for the drivetrain so that it could span off of the suspension arm's pivot point. Tht two universal joints for the front are connected by a 3L-axle so that the joints are 5L apart. This way the 3L-axle is at a diagonal which is 4L over, and 3L up.

The front wheel is connected to another universal for steering, and a chain drive to connect to the other two universal joint.

Tie-rods/ ball joints are used to connect the handlebars to the steering mechanism. The ball joints for the steering are kept as close as possible to the pivot point of the suspension to keep the suspension and steering independent.

Most of the rest of the drivetrain (for the V4 engine and rear wheel connection) is connected through bevel gears, except for one small chain section directly off the motor.

Comments

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I like it

Daniel Wareing

October 20, 2011

Highly original solution for front wheel drive on a bike, top marks. And it look good too, and reasonably sturdy looking, not easy to achieve given the demands of front wheel drive. A challenging creation, done well

I like it

Siddhart Jaipal

March 23, 2010

Great job! I think you are the first one who uploaded pics of a 2WD motorcycle, Keep going and going!

I like it

Fred Ottens

May 16, 2009

Interesting bike. Could be fun to ride!!

I like it

Jasni Kamarudin

March 3, 2009

Nice works on the details..Marvelous!

I like it

Morten Frandsen

February 19, 2009

Great bike. A lot of creative mechanics in that front suspension. I'd agree with Evan - it's not very pretty. But then again Technic isn't about looks.

I like it

Lola TruckDriver

February 15, 2009

Thanks for reviewing my Old School 857 Super-Sports Sidecar, and congrats on your contraption... Lots of engineering went in, obviously, and I can see that you studied your part in the making! I would dump the front drive & chain to try to make the whole steering/suspension a bit more compact/lighter/shorter... And I sure would add a sidecar since they use those front linkages in real-life, much more that ShowBike Tesi! [Now, more pics of the steering system in the front wheel hub please!]

I like it

Evan Drinkwater

February 15, 2009

hey cool looking creation, looks very complex all the mechanics of it, shame it's not so aesthetically pleasing, but definitely an interesting idea, having no forks, keep up the good work....saw that you had no comments so i thought i'll be your first haha....peace