Travelguy did a lot or R&D on one he worked on for months.
Took it to the mountains, around town at the lights,
kept a constant check on the temps and it looked real good.
i "think" he made it smaller but thicker to have the same or better surface area.
we were just discussing it the other day on one of the sites.
I believe he said it wasn't feasible, or profitable to mass produce.
In other words, it'd cost more to make than he'd feel justified to charge for it.
I'd like to have one bigger on top like the Triumph Triangle myself.
A lot of possibilities and a real good idea.
good luck.
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