This is a quick Lego prototype of how the steering will work. The steering will be using double steering rods (as seen from the below photo) to avoid a sloppy steering, and it will probably go underneth/beside the main frame and the go up to the drag links.
Originally I wanted to combine the tilting with the steering but I'm missing some vital pieces, and since the Lego I have originates back to 1988 it's impossible to find. But, if you have a set of these please leave a comment!
The tilting mechanism... Some of my colleagues has adviced me not to try to build a tilting trike but to build a regular two wheeled Long John-styled bike, but that's too easy.
As I am not the first one to build a tilting trike, and not the first one to build a tilting cargo trike there are some inspiration to find on the web. For a long time I used this (failed) project as guideline, until I realized the steering "frame" are way too over sized, there is also no kingpin steering (although quite possible to add). Plus is that it's an easy construction (ie. can be easily modified). Minus is that transfering the power from the handlebar is hard to a steering design with just one link between the steering arms.
I found a german trike maker that have a very interesting tilting mechanism, and it doesn't seem that hard to accomplish. It's clean, it got a steering mechanism with two independent steering links which makes everything much easier, and it got suspension as well (which you can just replace with a fixed rod instead).
So I built a first version of the tilting mechanism, in Lego of course.
And a quick video as well =)
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