Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

  On my minibike, the idler was at the top-half of the
setup, the drive or tight side, with the belt moving
to the left.  I do not think, at these relatively low
power and slow applications, that it makes any difference
which side of the setup you arrange the idler pulley so long
as it tightens the belt.  Just not inside the loop IMHO.

  We always put the idler pulley gear where it fit best
always worked, with minimal slippage once you engaged
it.   

I need a good steam today.

Wayne