For those that like the look of a classic crankset or desire a 110 BCD take a look at the Stronlight cranks below. Current price $275 but you need to also buy two bottom brackets. Three ring options from 53/39/30 to 46/34/24. Only one crank length 170mmm. Pretty light weight 1350 gm add 500 gm for low cost BBs and you get 1850 gm. Lighter BBs would make it a lightweight tandem set.

http://www.sjscycles.co.uk/stronglig...gecurrency=usd