[BBray_T1296]

Chains shouldn't be a problem as long as they are tight enough and they are VERTICAL! I can not stress enough how utterly impossible it is to use long horizontal chains, as we bent our sprocket shafts last year trying to get the chain tight enough to counteract gravity tendency to pop the chain off(ultimately permanently disabling our robot). As long as you have the room chains will work (Even though i mortally despise chain now)