The Spearhead, by Rick O'Brien

A number of years ago, Rick was working on a design that was intended to be retrofitted to an ICE Sprint trike that he was calling the Spearhead.  In the end he abandoned the effort to go commercial with it due to the difficulty of securing insurance coverage and still making it financially worthwhile, but lots can be learned by examining what he did.

Here is a great Spearhead flyaround video - if you examine it closely you can probably learn alot!

Here's an exploded shot of all the parts laid out:

And here's a picture of his latest design that goes on an ICE Vortex called the Spearwood - apparently substantially faster and more stable.  It is made with wooden veneer with glassed and filleted joints: