Wheel clearance for 26"?
What sort of clearance does a standard 26" wheel need for a touring bike? I'm trying to design the rear triangle of a frame, but I can't work out the lengths for the stays without knowing. I figure it's a 559 mm bead seat diameter on the rim, so half of that is roughly 280 mm, then leave 40 mm for the tyre and rim sidewalls, then another 20 for the mudguard, so I reckon on leaving 340 mm of "wheel space". Would that be enough, or do I need more?