Revisiting the underdrive pully topic for fresh info.

[Pat]

Thanks, Topless. The BBI pulley looks very well balanced in their testing. I get the impression like you think the UDPs are all pretty much the same. Also, I am of course concerned the with practical limits you speak of. That said, I don't get the impression I would bump into any of these limits with the offerings currently available. That's why I am trying to split hairs here.
Do you know which pulley the BSX cars are using, and what the drive reduction is?
TIA