Thinking of changing from standard Derailleur to Alfine 11

Discussion in 'Components, Accessories and Clothing' started by Flossyrockstar, 25 Oct 2018.

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  1. Flossyrockstar

    Flossyrockstar Über Member

    Location:
    Biggin Hill
    As above really, I do about 16 miles a day and a 1000 ft of climbing, are they any good?
     
  2. Drago

    Drago Flouncing Nobber

    Location:
    Valhalla
    Theyre lovely. I wish I had a bike that would suit one.
     
    Nibor likes this.
  3. Milkfloat

    Milkfloat Veteran

    Location:
    Midlands
    Any particular reason for a switch?
     
  4. mjr

    mjr Comfy armchair to one person & a plank to the next

    They're OK but if the climbs are steep, you might want to use a site like www.gear-calculator.com to compare the gearing and choose what chainring and rear sprocket you want. You may find you sacrifice a little at the top end to keep your preferred climbing gear, although some say you can get away with a slightly higher gear if you're not using a tensioner wheel.
     
  5. Yellow Saddle

    Yellow Saddle Veteran

    Location:
    Loch side.
    I don't get it. What has the tensioner got to do with gearing?
     
  6. OP
    OP
    Flossyrockstar

    Flossyrockstar Über Member

    Location:
    Biggin Hill
    Part of the commute home is off road and the gear gets clogged up regularly, also spending 60 squid every 7 or 8 months on a cassette and chain is a bit expensive, would i get more miles out of the Alfine?
     
  7. Spiderweb

    Spiderweb Not So Special One

    Location:
    North Yorkshire
    I think a bit more regular cleaning of your drivetrain may be in order, a new cassette every 7 or 8 months is ridiculous.
    Don't allow it to get clogged up in the first place.
     
    glasgowcyclist likes this.
  8. OP
    OP
    Flossyrockstar

    Flossyrockstar Über Member

    Location:
    Biggin Hill
    Biggest climb is 9.6% in the morning which is fine on the current setup (xt deore with 11-32 cassette) Im not exactly speedy gonzales on the fast bits anyway so the top end wouldn't really bother me.
     
  9. MichaelW2

    MichaelW2 Veteran

    My Alfine 8 is 10 years old and has covered almost 40,000 miles. It is a great system and the 11 seems to be better.I do a steady slope every day and it works fine.
    You need to pay attention to the tensioning method,
    sliding vertical dropouts
    horizontal dropouts
    eccentric BB
    Spring loaded tensioner.

    The spring tensioner is the worst, only use to retrofit an existing bike.
    Sliding dropouts are probably the best.
    Eccentrics vary in their reliability, some sieze up, the set crews can dimple and make fine tuning hard. External clamps and internal self-release wedges are OK.
    Sheldon Brown has a gear chart to compare to your setup in gear inches.

    Maintenance is reduced compared to derailleurs. The system runs cleaner, I do an annual oil bath change and usually an annual sprocket and chain change. I tried using thicker chains but cant see any advantage. I fitted Sturmey Archer thicker sprockets (you need to remove some metal thickness with coarse emery cloth) but again no real advantage.
     
  10. OP
    OP
    Flossyrockstar

    Flossyrockstar Über Member

    Location:
    Biggin Hill
    It gets stripped down (including removing the cassette and chain rings) almost every week.
    The whole lot is cleaned in a tank and then polished till i can see my face in it!!
    I thought 3000 miles out of a cassette and chain was good going especially as about a mile is off road in the evening commute.
     
  11. OP
    OP
    Flossyrockstar

    Flossyrockstar Über Member

    Location:
    Biggin Hill
    So tensioner eh, thats something that never occurred to me as i have vertical dropouts and would need to have something to tension the chain.
     
  12. mjr

    mjr Comfy armchair to one person & a plank to the next

    Another moving part to work against.
     
  13. Yellow Saddle

    Yellow Saddle Veteran

    Location:
    Loch side.
    A moving part yes, but one that is incredibly efficient. A derailler drive train is about 97% efficient, whereas an internal gear system only about 90%.

    The last thing you have to worry about is one idler pulley.
     
  14. MichaelW2

    MichaelW2 Veteran

    The pully collects winter grime just like a derailleur.
     
  15. mjr

    mjr Comfy armchair to one person & a plank to the next

    Those are artificial test figures and I humbly suggest that 97% seems extremely unlikely in this case, given the reported cassette consumption.
     
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