Swapping FSA Gossamer for 105 Chainset

iwantblue
iwantblue Posts: 134
edited August 2013 in Workshop
Just a quick request for guidance on compatibility please.

I have a Giant TCX1 with FSA Gossamer MegaExo Compact - 46x36

was going to locate and fit a bigger big ring but the 105 Chainset from Merlin seems like a no brainer, can anyone tell me if the 105 kit fits the FSA MegaExo Integrated bottom bracket?? I think they are both 24mm but I wasn't sure if being a CX frame the BB was different at all, EDIT its a Press-fit AL86 24mm BB currently if that matters...

any help gratefully received :)

Then its just standard of compact :/ I used to run a 53 in the past, but I was younger and fitter then :P

Comments

  • Monty Dog
    Monty Dog Posts: 20,614
    Straight swap - no need to change the bottom bracket, but worth checking the condition of the bearings whilst you have the cranks off,
    Make mine an Italian, with Campagnolo on the side..
  • iwantblue
    iwantblue Posts: 134
    awesome thanks MD, I suspected as much from my 'net searching, but good to here it from someone who's a bit more bike literate than myself :)

    I was so convinced I was going to go for it, but they only have 39/53 in a (172.5 that I currently have only as thats what came with the bike), Not sure now whether to go for that or stick with a compact 34/50 ina 170... :/

    knew it couldn't be that easy...

    am I going to notice the 2.5mm shorter crank length? I know I know only I can tell that I guess, just as I'm happy with the 172.5 it made sense to stick with it, but I'm not sure I'm up to a 39 inner ring even in flat old Norfolk, there are a couple of hills of note for an out of shape FB LOL.
  • keef66
    keef66 Posts: 13,123
    Doubt you'd notice the difference in crank length TBH.
  • iwantblue
    iwantblue Posts: 134
    Thanks, I pondered 'Rule 5', and went 39/53 :)

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