out of the two you posted? the second will have more resistance and the first one might work ok if the chain slides on something so it dont fall off... but you would still need a tie rod between em.
there would be, i forgot to draw it into that one, i was going off of memory from a drawing i did at work. and there would be chain tensioners on both of them to keep the chain on/tight
, its only going to be going a maxium of about 5 maybe 10 mph so it doesnt need to be over complecated. 