Thruxton Thruxton R Gearing

Discussion in 'Thruxton, Scrambler & Trident' started by ChrisT70, Jul 8, 2017.

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  1. ChrisT70

    ChrisT70 Active Member

    Jun 27, 2016
    30
    28
    Sheffield
    As I have had time for some much longer bike rides recently I have started to notice the gearing is a bit short in standard form. Does anyone else feel the same? Stunning overtakes obviously with instant pick up but would it benefit from a sprocket change? Maybe Just a tad longer legs?
     
  2. Callumity

    Callumity Elite Member

    Feb 25, 2017
    3,358
    800
    Nr Biggar
    Seen elsewhere:

    The easy mod seems to be a switch to the T120 gearbox sprocket which adds 1 tooth and loses about 250 rpm at 75mph.
     
  3. crispey

    crispey crispey creme de la creme

    Nov 6, 2014
    7,198
    1,000
    Uk
    Look here. It might help
     
  4. ChrisT70

    ChrisT70 Active Member

    Jun 27, 2016
    30
    28
    Sheffield
    Mine is starting to loosen up and feel better also as the miles go up, it's still very low as I didn't get much time on it yet. (1200m)
     
  5. Midas

    Midas Member

    Mar 26, 2016
    40
    18
    Manchester, UK
    2 teeth larger on the front would be ideal, one isn't enough (17t) to notice much of a difference, but I couldn't find an 18 tooth sprocket. I ended up using a 37 tooth T120 rear sprocket and removing two links from the chain...Perfect. Use the calculator in the post abouve and you will find the gearing for both the Thruxton and the T120 in the data-base, do the comparison and you will see the difference.
     
  6. thebiglad

    thebiglad Old fart, still riding !

    Sep 25, 2013
    5,064
    1,000
    Central France
    Just to illustrate the effect, I changed the front sprocket from 18 to 19 teeth (on my 955i Tiger) and the difference at 60mph was a reduction in revs of approx 350 rpm and the difference is bigger the faster you go.
     
  7. Wag

    Wag Active Member

    Jun 19, 2016
    68
    28
    exmouth
    Am I reading right ? I find it one of the highest geared bikes ive ever had- 20ish.Especially compared with some placcy bikes. unless the twin bangs aspect is tricking me, i'm not a red-liner by the way.
     
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