Sora to 105 upgrade parts list

NetMasterFlex
NetMasterFlex Posts: 17
edited September 2013 in Workshop
Ok so I own this bike:

http://www.bianchiusa.com/bikes/road/co ... ne-7-sora/

In the spring I want to upgrade the components ie. shifters/derailer to Shimano 105. Right now I have a 9 cassette, but will want to change that out for 10 per 9 is going away and 10 is the new standard. Aside from shifters, derailer, and cassette, and chain. What else do I need to make this upgrade a success? Will my front 2 sprocket crank work as I understand the chain is thinner?

Any help would be appreciated.

Thanks

NMF

Comments

  • flasher
    flasher Posts: 1,734
    No, that's all you need. Yes, the chain is thinner but not the inside diameter of the links so your cranks are fine.

    Just one thing probably though, 11 speed Shimano will be the new standard soonish!
  • keef66
    keef66 Posts: 13,123
    Strictly speaking you may not even need a new rear mech. It's the shifter that determines how far the rear mech moves with each click.
  • imsimon
    imsimon Posts: 181
    keef66 wrote:
    Strictly speaking you may not even need a new rear mech. It's the shifter that determines how far the rear mech moves with each click.


    this is right you dont need a new rear mech unless you want one for blings sake, I did the swap from sora about a month ago, I got 2nd hand 105 shifters from the for sale section, a 10sp tiargra cassette from ribble and a 105 chain from crc and kept the rear mech which was a tiagra, still have standard sora chain set and front mech, as and when I will upgrade them to but to be honest they work fine so theres no need other than snobbery so will probably just wait untill they need replacing
    oh I used new cables as well not always needed but I decided I might as well while everything was apart! I just got new inner cables quite cheap from ebay
  • Mad_Malx
    Mad_Malx Posts: 5,093
    Little things:
    If you are going to the new 105s (5700) with underbar cabling these usually come with cables and outers. Mine didn't come with in-line adjusters which are handy but not essential.
    Despite what Shimano suggest, non-5700 brakes work just as well or better than with their original levers.
    You will also want some bar tape.
  • keef66 wrote:
    Strictly speaking you may not even need a new rear mech. It's the shifter that determines how far the rear mech moves with each click.

    First of all Thanks for everyone for the good info. I'm new to this forum and I'm overjoyed by the response I got. I hope that as I gain knowledge, I too can contribute to some newbie soul one day.

    When you all are speaking of rear "mech", are you referring to the cassette or the derailer, or both?

    If I can get by with just switching out the shifters to 105 for 10 and leave the rest at 9 for now that would give me some time to save up and not have to slam a hefty upgrade cost in the spring.

    Thoughts and answers welcomed.

    NMF :D
  • me-109
    me-109 Posts: 1,915
    ^^ Can't do that because the cassette spacing is different 9 > 10 sp. You need to do all in one go. As per the earlier poster I also swapped my Sora shifters for 5700 105s, with a Tiagra cassette and 105 chain. The rear mech is still the original Tiagra one and works fine. I was able to reuse the cables (a couple needed shortening) and bar tape.
  • keef66
    keef66 Posts: 13,123
    Rear mech means the rear derailleur. Not the cassette.

    Bare minimum in switching from 9 to 10 speed is to replace shifters, chain and cassette.
  • Ok so just to make sure I'm clear, I would only have to change out Shifters, Chain, and cassette. I can leave my Sora Mech for a later upgrade? If any of you know any legitimate bike part supply stores online, please feel free to share.
    Thanks again
    NMF
  • andy_wrx
    andy_wrx Posts: 3,396
    Ok so just to make sure I'm clear, I would only have to change out Shifters, Chain, and cassette. I can leave my Sora Mech for a later upgrade?

    Yes.

    9sp front and rear derailleurs, chainset, brakes will all work fine with the new 10sp shift/brake levers and chain
  • Thanks Andy! now if anyone has any bike part site recommendations other than ebay etc. please let me know. Thanks.
    NMF
  • smidsy
    smidsy Posts: 5,273
    UK wise:
    Wiggle
    Chain reaction
    Ribble
    Merlin cycles

    Europe also some good sites but I have not tried personally
    Yellow is the new Black.
  • I'm looking to the same on cube peloton. Can I swap the cassette without changing the rear hub? I have shimano r500 wheels (standard peloton issue)?

    Thanks
  • gozzy
    gozzy Posts: 640
    yes
  • Really Gozzy? I can slot a 10 spd cassette on my current 9spd r500 hub and away i go? Thanks that's good news - can get it done cheaper and more quickly :-D
  • gozzy
    gozzy Posts: 640
    R500 are 8/9/10 speed compatible. As above, as long as your shifters, chain and cassette are 10 speed and your mechs are 9/10 speed, you're good to go.
  • Are the sora front and rear d 9/10 then?
  • gozzy
    gozzy Posts: 640
    Well, technically they're 9 speed which is what you're running now I assume. However they should, as discussed further up the thread, work with 10 speed.
  • I'll test it a rear mech is about £40 if not. Thanks Goz
  • desweller
    desweller Posts: 5,175
    It will be fine. The shift indexing is all driven by the shifter, the derailleurs are designed with quite a bit of potential overtravel. As long as the cable pull ratio is correct (which you control by using Shimano shifters with Shimano derailleurs) then you'll have no problems.
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