I was looking around for a new marker light fixture for my sidecar (mounted on a Moto Guzzi Breva) and when I googled "Duna" I found this thread. It's good to see my rig get around.
The Duna, as noted, was designed for a small bike although that old 2=4 two stroke adage may have something to do with Panonias plan. The Breva delivers about 45 hp from 750 cc's and it feels like the hack with a passenger definitely maxes the bike out.
I think the hack weighs about 125 to 150 lbs..
I have ridden a solo C5 and it felt about like the Breva/Duna rig as far as gittup-n-go.
I have always liked the Unit Sidecar Sprite Model Sidecar (
http://www.hedinghamsidecars.com/Hedingham-Sprite.php). It is light and intended for classic British style bikes.
Anyone ever seen one of these?