套件重量 (2014)

單車套件重量常常成為比較價錢及性能的著眼點, 但一般成車很少會提及套件佔車重既成份及比例, 今次出於好奇, 上網搵了一些資料, 比較一下:

Campagnolo

	Campagnolo Super Record	Campagnolo Record	Campagnolo Chorus	Campagnolo Athena
Crankset	585a	627	667	644b
BB Cups	45	46	46	72
Shift Lever	330	337	337	360
Rear Derailleur	155	172	186	209
Front Derailleur	72	74	76	92
Chain	239	239	255	255
Cassette	177	201	230	230
Brake Calipers	272	278	299	306
Group Weight in g	1875	1974	2096	2168
Group Weight in lb	4.13	4.35	4.62	4.78

^a The Super Record group was weighed with the titanium crankset option.
^b The Athena group was weighed with the carbon crankset and shift levers.

Shimano

	Shimano	Shimano	Shimano	Shimano	Shimano	Shimano
	Dura Ace Di2 7970	Dura Ace 9000	Dura Ace 7900	Ultegra 6800	Ultegra 6700	105 5700
Crankset	636	636	636	694	737	834
BB Cups	89	67	89	76	102	102
Shift Lever	459	363	448	419	490	492
Rear Derailleur	225	160	166	193	209	232
Front Derailleur	124	67	67	86	89	112
Chain	249	248	249	260	280	291
Cassette	163	163	163	226	204	205
Brake Calipers	293	294	293	340	330	356
Battery + Loom	137c	n/a	n/a	n/a	n/a	n/a
Group Weight in g	2375	1998	2111	2294	2441	2624
Group Weight in lb	5.23	4.4	4.65	5.05	5.38	5.78

^c The Di2 system requires a battery and electrical cables which cannot be cut shorter. Together the battery and cables weigh 217g for 'medium' length. Typically the weight of standard shift cables would be 80g so we have added 137g to the weight of the Di2 group to take into account this difference.

SRAM

2012	SRAM	SRAM	SRAM	SRAM
	Red	Force BB30/GXP	Rival	Apex
Crankset (GXP)	655	676	739	890
BB Cups (GXP)	105	115	115	inc above
Crankset (BB30)	630	645	n/a	n/a
Bearings (BB30)	51	52	n/a	n/a
Shift Lever	280	303	340	344
Rear Derailleur	153	178	188	190
Front Derailleur	58	88	88	89
Chain	257	257	277	277
Cassette	155	210	210	210
Brake Calipers	265	280	287	308
BB30 Group in g	1849	2013	2244	2308
BB30 Group in lb	4.07	4.43	4.94	5.08
GXP Group in g	1928	2107	n/a	n/a
GXP Group in lb	4.25	4.64	n/a	n/a
2014	SRAM	SRAM	SRAM	SRAM
	Red	Force BB30/GXP	Rival	Apex
Crankset (GXP)	605	718	739	890
BB Cups (GXP)	105	115	115	inc above
Crankset (BB30)	555	710	n/a	n/a
Bearings (BB30)	51	52	n/a	n/a
Shift Lever	280	307	340	344
Rear Derailleur	143	166	188	190
Front Derailleur	76	77	88	89
Chain	250	250	277	277
Cassette	155	241	210	210
Brake Calipers	254	278	287	308
BB30 Group in g	1764	2081	2244	2308
BB30 Group in lb	3.89	4.58	4.94	5.08
GXP Group in g	1868	2152	n/a	n/a
GXP Group in lb	4.11	4.74	n/a	n/a

Ref: http://www.totalcycling.com/component-weights.html