frame

Karel52
Karel52 Posts: 7
edited October 2010 in Road beginners
:lol:I have an Isaac Sonic bike for 3 yearsnow , and it makes a lott of noise while pedeling .Has anybody the same problem and how is it solved .I send my frame to the distributor and they checked it and could not find anythig causing the problem.
greetings Karel

Comments

  • blackhands
    blackhands Posts: 950
    I know of 3 people who have had cracks on the downtube on Isaac frames. I would check it again very carefully.
  • domhopson
    domhopson Posts: 259
    Are you sure it's not the bottom bracket?
  • Weejie54
    Weejie54 Posts: 750
    Perhaps the name "Sonic" is descriptive of the bike being noisy?

    BB would certainly be my first port of call.
  • Niffleman
    Niffleman Posts: 87
    Can you be a little more specific? What kind of noise is it? Does it become louder as you pedal faster? What kind of maintenance have you carried out on the bike in the last three years? This would helo us advise you.
  • skyd0g
    skyd0g Posts: 2,540
    I get the same problem when I exceed 768mph. Could you be a little less specific as to precisely how & when your problem occurs? :wink:
    Cycling weakly
  • Karel52
    Karel52 Posts: 7
    I have sent it to the distributor and they cleaned the rear wheelpad , and now after some time , and much lower tempratures , the noise is allmost gone .
    It occured when it was very hot and especially when I put some power on the pedals .
    A crackling noise started more louder when I stood on the pedals .
    It was already the second time , I had this noise allready one year earlkier .
    I am thinking of replacing my frame . by for example a Basso Astra or a Specialized Tarmac Pro sl.
    wich is the best choice.
    gr Karel
  • Karel52
    Karel52 Posts: 7
    blackhands wrote:
    I know of 3 people who have had cracks on the downtube on Isaac frames. I would check it again very carefully.
    I could not find any cracks in the carbon tubes , the distibutor cleaned the rear wheel pad and now while it is much cooler the noise has gone .
    But nevertheless it was a terrible noise while pedelling and standing on the pedals .
    I think the noise could due to the high temperature and the expanding of the material .
    I think of replacing the frame for a Basso Astra or a Specialized Tarma Pro SL
    what do you think is the best choice.
    gr Karel

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