Re:
Here's the components list for the Raleigh Yukon found in a sorry state in a bric a brac shop, bought for £35
Schwalbe black jack tyres 26x1.90 (wish they did beige walls)
Cheap Shimano FC-TY501 48,38,28T crankset, (I'm afraid the original biopace was badly worn)
BB is an old Shimano...