[colin340]

we have used them for the past 3 years
2004 the arm that hooked the bar- worked well
2005 the arm for picking up tetras- we use timing belts on the secant pivot but when we put it together and tryed to move it with no load and it riped the cogs off so we change 35# chain
2006 the upper Harv that moved balls to the shooter we used double sided timing belt

but after seeing 1503's robot i like chain