part( rim ).
part( sprockets ).
part( nut ).
part( spoke ).
part( bolt ).
part( fork ).
part( tube ).
part( casing ).
part( frontbrake ).
part( stem ).
part( bar ).
part( grips ).
part( levers ).
part( cables ).
part( headset ).
part( rearderailleur ).
part( rearbrake ).
part( frontderailleur ).
part( chainrings ).
part( chain ).
part( pedals ).
part( small ).
part( saddle ).
part( post ).

assembly( bike, [ quant( wheel, 2 ), 
	          quant( frame, 1 ) ] ).
assembly( wheel, [ quant( spoke, 20 ), 
		   quant( rim, 1 ),
		   quant( hub, 1 ),
		   quant( tire, 1 ) ] ).
assembly( tire, [ quant( tube, 1 ),
		  quant( casing, 1 ) ] ).
assembly( hub, [ quant( sprockets, 6 ),
		 quant( axle, 1 ) ] ).
assembly( axle, [ quant( bolt, 1 ),
		  quant( nut, 2 ) ] ).
assembly( frame, [ quant( rearframe, 1 ),
		   quant( frontframe, 1 ) ] ).
assembly( frontframe, [ quant( fork, 1 ),
			quant( frontbrake, 1 ),
		 	quant( handlebars, 1 ),
			quant( headset, 1 ) ] ).
assembly( handlebars, [ quant( stem, 1 ),
			quant( bar, 1 ),
			quant( cables, 4 ),
			quant( levers, 4 ),
			quant( grips, 2 ) ] ).
assembly( rearframe, [ quant( rearderailleur, 1 ),
		 	 quant( rearbrake, 1 ),
			 quant( crankset, 1 ),
			 quant( seat, 1 ) ] ).
assembly( ss, [ quant( crankset, 1 ), quant( seat, 1 ) ] ).
assembly( crankset, [ quant( chain, 1 ),
		      quant( chainrings, 2 ),
		      quant( frontderailleur, 1 ),
		      quant( pedals, 2 ) ] ).
assembly( large, [ quant( small, 1 ) ] ).
assembly( seat, [ quant( saddle, 1 ),
		  quant( post, 1 ) ] ).