Carbon frames on roof racks

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Comments

  • meanredspider
    meanredspider Posts: 12,337
    I tell you what (and I hate not to engage in your "fun"): the state of the roads being what they are in Britain, pretty much anything you do with a bike other than ride it has to increase its lifespan...
    ROAD < Scott Foil HMX Di2, Volagi Liscio Di2, Jamis Renegade Elite Di2, Cube Reaction Race > ROUGH
  • StillGoing
    StillGoing Posts: 5,211
    Matthewfalle wrote:
    philthy3 wrote:
    :D:D


    Agree completely - I think not only would it be interesting but will also allow us ALL to do some research on a new topic - escape the banality that seems to infest a lot of people's lives.

    Leave this with me and I'll look into it when I get back from the gym.

    Is "gym" your code word for psychiatrist? :D
    I ride a bike. Doesn't make me green or a tree hugger. I drive a car too.
  • Matthewfalle
    Matthewfalle Posts: 17,380
    Oh, no, no no. i stopped seeing them after I read their report - I felt they weren't scientific enough and only focused on all the bad points and not the good one.

    I feel that researching things fills their place.
    Postby team47b » Sun Jun 28, 2015 11:53 am

    De Sisti wrote:
    This is one of the silliest threads I've come across. :lol:

    Recognition at last Matthew, well done!, a justified honour :D
    smithy21 wrote:

    He's right you know.
  • smudgerii
    smudgerii Posts: 125
    Stop feeding the Troll
  • Matthewfalle
    Matthewfalle Posts: 17,380
    Stop being rude and mean. Just because you don't agree/can't understand something doesn't mean that people are "trolling".

    If you don't like/can't understand something just don't look at it instead of being mean and rude.

    Other people understand the words in his thread and have added, politely and intelligently, to the discussion to which I offer them props and respect.
    Postby team47b » Sun Jun 28, 2015 11:53 am

    De Sisti wrote:
    This is one of the silliest threads I've come across. :lol:

    Recognition at last Matthew, well done!, a justified honour :D
    smithy21 wrote:

    He's right you know.
  • WTF
    WTF Posts: 52
    edited December 2016
    So to summarise...
    Can I put my cf bike on a roofrack by its forks or downtube if it is raining or not?
    Also does temperature affect the carbon fibre on my bike if I ride it in wintertime, especially if it rains?
    :wink:
  • fat daddy
    fat daddy Posts: 2,605
    Everything you do affects your bike ... if you ride it you slowly wear out the components and weaken the structure.

    Stop d1kc fceking about worrying if you should keep your bike in a thermocontrolled envirobubble and ride it ..... when the frame wears out .. or more likely you just want a better, lighter, more aero one, then go buy one.

    Di2 ... that at some point will break as will a brake cable, tyres puncture, rims ware out, saddles wear through ..... and you know what ? .... the world keeps going .. albeit with a more expensive replacement thats skinnier and better in every respect except longevity :D
  • cycleclinic
    cycleclinic Posts: 6,865
    If Di2 where affected by vibration then you should not ride the bike as road buzz will vibrate the hell out of it. Also if wiring was vibration damaged how do cars manage 200,000 miles without going wrong. the well made ones do.

    I am alos have immense difficulty with what matthew fella i posting.

    In one abstract or partial paper quote he has posted the actual results are not clear as they are in the paper and not presented. How old is this paper? The paper seems to compare failure modes and properties of glass and CF in the same expoy resin with high and low solvent content while being stress to failure at atmospheric and high pressure up to 3000 atmospheres with pressurised water!

    No where in this abstract is any mention of how moisture absorption affects strength. That will be in the paper and it moisture absorption is going to be more of an issue (potentially I have not seen the results) at high pressure than at atmospheric pressure i.e bike on roof rake in the rain. We also have no idea of what resin was used. Is this typical of what is used in a bike. Are the fibre types (thickness) the same as used in T700 fibre commonly used in frames and forks. I think however the pressure regime here is the key point.

    It is also quite obvious that proper control of fibre thickness, layup and resin composition will affect how the composite behaves under stress and when exposed long term to moisture. given CF forks, bars and frames (inc wheels) dont seem to disintergrate when exposed to repeated wetting it seems to me manufacturers have accounted for this.

    With your arguments Matthewfella you should be posting about aluminium fatigue and how all aluminium components will fail with time causing potential injury. However you are not which tells me something. Anyone can pull abstracts and papers of the web. understanding what they mean though is another matter.

    However I dont think any of these arguments are going to dissuade him for posting more about CF failure when exposed to rain.
    This sort of posting Matthewfella maybe well intentioned but you are barking up the wrong tree.
    http://www.thecycleclinic.co.uk -wheel building and other stuff.
  • dennisn
    dennisn Posts: 10,601
    I'm thinking it will be fine. Unless it rains, then the tubes will melt.

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