I don't know about recumbent
bikes, but I've got a Sun EZ-Tad SX recumbent trike that's held up with me (peak wt was about 450) plus 20-25 lbs of added gear (tubes, lights, tools, pump, etc.). Sun's web site (
www.sunbicycles.com) lists the weight limit at 300 pounds, but at my LBS they told me the only thing they had any concern about was the wheeels, and they've held up just fine. One thing I found while trying to find a current price is that apparently Sun's redesigned the steering since I got mine; bicycleman.com says it's so bad they won't stock it until Sun fixes the problems with it, and that it's unsafe over 10-15 mph. Mine's got the older, indirect steering and felt fine at 30+ mph. Maybe you could find a 2007 or older model on Craigslist or eBay?
- Bob