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@wolfenger
Hello all
I finally got round to checking out what my right hand crank was. I then went to Mr Google and put in the said figures and came up with lots of interesting stuff. My crank is a Shimano FC 1056 which is the old 105. Found an interesting bit on Cyclefoums about correct bottom bracket lengths. For this (as a double) the correct BB is 107. For the older FC 1055 the correct length is 113. Now I also found on Sheldon's - God rest his soul - site that if you use a 107 BB with the FC 1055 you get a nice track chainine. So my brain starts to whir a little and I deduce that if the 1055 with its 113 BB needs a 107 to go track then the 1056 with its 107 BB needs a 101 to go track!? Or am I no where near the tree I should be barking up?
Help!