dura ace crank

[Pez1207]

Hi, first time on cycling forums. I am building my first bike from scratch. I have a Holdsworth frame, a dura ace triple crank FC 7703, a 9 speed dura ace rear mech, I do not know which bottom bracket will fit the crank, I am told the crank is for a Octalink splined BB, I have no idea what that means, is it a special one, any one know what I need to buy. Many thanks Paul

[gclark8]

DA FC-7703 is about 3 years old or more.

Bottom bracket is BB-7703, 118.5mm,
http://www.shimano.com.au/publish/content/australia/en/cycling/customer_support/service_diagrams/road_2004.MainContentPar.0005.Schematic.0004.File.tmp/fc_7701_7703.pdf
http://www.shimano.com.au/publish/content/australia/en/cycling/customer_support/service_diagrams/road_2004.MainContentPar.0005.Schematic.0002.File.tmp/bb_7700_si.pdf
http://www.shimano.com.au/publish/content/australia/en/cycling/customer_support/service_diagrams/road_2004.MainContentPar.0005.Schematic.0007.File.tmp/bb_7703_ev.pdf

[capwater]

Hi, first time on cycling forums. I am building my first bike from scratch. I have a Holdsworth frame, a dura ace triple crank FC 7703, a 9 speed dura ace rear mech, I do not know which bottom bracket will fit the crank, I am told the crank is for a Octalink splined BB, I have no idea what that means, is it a special one, any one know what I need to buy. Many thanks Paul

Make sure you have a long cage rear derailler for that triple.

[Pez1207]

Make sure you have a long cage rear derailler for that triple.

My first mistake, I got it of ebay and it's a short mech. God this is so complicated. I will have to buy another, thanks for the advice. Cheers Pez

[Pez1207]

DA FC-7703 is about 3 years old or more.

Bottom bracket is BB-7703, 118.5mm,
http://www.shimano.com.au/publish/content/australia/en/cycling/customer_support/service_diagrams/road_2004.MainContentPar.0005.Schematic.0004.File.tmp/fc_7701_7703.pdf
http://www.shimano.com.au/publish/content/australia/en/cycling/customer_support/service_diagrams/road_2004.MainContentPar.0005.Schematic.0002.File.tmp/bb_7700_si.pdf
http://www.shimano.com.au/publish/content/australia/en/cycling/customer_support/service_diagrams/road_2004.MainContentPar.0005.Schematic.0007.File.tmp/bb_7703_ev.pdf Thanks George, I got a 7703 of ebay and its spot on, many thanks for your advice. Pez