Hi Steve:

the trike i am talking about is a is a delta runner, not a delta wolf. the angle of the head tube is already welded on at 66 degrees. I dont think i could the really long fork on it even if i wanted to.

I was thinking of a triple tree fork like Charlie_r has on his lode runner:

made from one of brads chopper plans that is shorten to this length, but at least long enough for a headlight and front fender. made of steel and have heavy drop outs.

bottom line its looks like i am gonna have to put together at least 2 different style of forks and test them.
Looking also to see if I can make them out of high carbon steel. I haven't priced that or talked to the professional welder yet.