Tom Ward asks "...I'm wondering what the [Cyclo Benelux] Mark 8 [rear derailleur] would handle (in terms of both chain-wrap and clearance), given the stock 49 - 46 front chainwheels?..."
the Cyclo catalogue Ref. 609 (August 1960) says the Benelux Mark 8 Tourist Gear has "sprocket range 13th to 28th on freewheel, 20th difference on chainwheel, complete overall range 35th"
I'm running one with a 14-28 freewheel and 32-47 chainrings... ummm... chainwheels. ...................................... Peter Brueggeman La Jolla California USA pbrueggeman(AT)ucsd.edu