Here is a link to velobase entry for Weyless pedals. Unfortunately, the contributor did not provide the weight.
http://www.velobase.com/
Also this brand info from velobase; can't say how accurate it is:
"Weyless was founded by a colorful individual named Lester Tabb, a multimillionare who ran a Mint in Greenwich Conn. Born in Brooklyn, Tabb was later called a power hungry, bipolar lunatic in a book written by his son George. Anyway, Tabb began riding an Olympia bike in 1972 and got very excited about bikes and riding. He rode Cinelli rollers in the Winter but wanted to make a better set of rollers with steps on the side to ease mounting. Weyless was founded and in addition to the rollers Tabb's company manufactured a variety of nicely made components designed by Bill Shook. Tabbs cycling business venture downfall came when he added clothing to the mix. The clothing was made of wool that was supposed to not shrink. The wool shrank, the clothes fit poorly, and this basically did the firm in. Tabb moved his family south and remodeled Tara, the home from Gone with the Wind. Eventually it is rumored, that Tabb ended up in jail as a result of some weird Florida real estate shenanigans. His son George gained success as a writer chronicling his disfunctional family life in a memoir titled Surfing Armageddon - Fishnets, Fascists, and Body Fluids in Florida."
There's also an example on velobase of the cool Weyless hubs and a couple of other bits. It's too bad the company failed, despite having so many good designs.
John Hurley
Austin, Texas, USA