[JesseK]

Yea, we're considering the price difference between the steel and aluminum sprockets; $7 vs $16 is a big difference for 16 sprockets (prototype+production).

We actually got some help from 233 in DC to make our chains tensionerless this year. They put alot of emphasis on proper spacing for the chain. We may try to pre-stretch to an extent as well. Maybe we'll also have some Teflon ready in case we wind up needing tensioners.