Found the link. quote "no discernable difference was observed between the polychain belt drive and the standard chaindrive" http://reviews.mtbr.com/interbike/spot-bikes-belt-drive-carbon-drive-system-bikes/ http://autobus.cyclingnews.com/tech.php?id=tech/2007/news/08-28
@Smallfurry started
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Found the link.
quote "no discernable difference was observed between the polychain belt drive and the standard chaindrive"
http://reviews.mtbr.com/interbike/spot-bikes-belt-drive-carbon-drive-system-bikes/
http://autobus.cyclingnews.com/tech.php?id=tech/2007/news/08-28