I first encountered Sheldon back in the mid '90s on the tandem list. He was always a source of good advice and sound technical information.
I suspect his family has only a slight realization of the impact he had on the bicycling community. To say he will be missed is a major understatement. I hope there is a way for us to let his family know how much he meant to our community.
Ride to live, live to ride where ever you may be....