Vibration in feet

Bigmitch
Bigmitch Posts: 65
edited May 2013 in Road buying advice
I'm getting a lot of vibration in my feet in my trek modone 2.3 would carbon crank arms help

Comments

  • Bar Shaker
    Bar Shaker Posts: 2,313
    No.

    High frequency vibration at the contact points is one of the main downsides to metal framed bikes.

    Some gel shoe footbeds may help but the only real cure is to use a frame material that doesn't transmit high frequency vibration.
    Boardman Elite SLR 9.2S
    Boardman FS Pro
  • sungod
    sungod Posts: 16,860
    as above, road buzz through the pedals is pretty much normal, road bikes are stiff

    what size tyres and what pressure are you running them at? if it's too high it'll exacerbate things

    also, what shoes/footbeds? some footbeds are little more than a bit of plastic sheet, decent ones tend to have a bit of firm padding
    my bike - faster than god's and twice as shiny
  • Bigmitch
    Bigmitch Posts: 65
    sungod wrote:
    as above, road buzz through the pedals is pretty much normal, road bikes are stiff

    what size tyres and what pressure are you running them at? if it's too high it'll exacerbate things

    also, what shoes/footbeds? some footbeds are little more than a bit of plastic sheet, decent ones tend to have a bit of firm padding
    23c tires 90 back 80 front and have diadora speed racer 2 shoes
  • Bigmitch
    Bigmitch Posts: 65
    Also had a bad experience with a carbon frame :-(
  • Bar Shaker
    Bar Shaker Posts: 2,313
    Bigmitch wrote:
    Also had a bad experience with a carbon frame :-(

    Did you really go from a carbon frame to a Madone 2.3?

    The great 'free lunch' benefit of carbon is that it does not transmit high frequencies. It will transmit shocks, such as from riding over a stone, but high frequencies such as from the rear cassette and from road surface (tar and chipping surfaces are the worst) are completely or almost completely blocked. The effect is to reduce fatigue inducing vibration from reaching the legs and arms - imagine a Power Plate effect, albeit to a lesser strength but for a much longer period of time.

    If you have had a bad experience with carbon frames too then I would definitely avoid carbon cranks!
    Boardman Elite SLR 9.2S
    Boardman FS Pro
  • Bigmitch
    Bigmitch Posts: 65
    It was a carbon mtb just got into road and its so much better (no nagging when coming home mudded up to the eye balls)
  • sungod
    sungod Posts: 16,860
    aside from trying things like different footbeds or gel pads probably not much to do, at those tyre pressures you shouldn't be getting a harsh ride, you could change to 25mm tyres which'd smooth things a bit more, but won't be a huge difference

    is it on all roads, or just some surfaces? i'm on hols at the moment and there seem to be two surface types here, smooth and pebbledash, on the latter it's just a matter of taking it as fast as possible
    my bike - faster than god's and twice as shiny
  • mfin
    mfin Posts: 6,729
    sungod wrote:
    aside from trying things like different footbeds or gel pads probably not much to do, at those tyre pressures you shouldn't be getting a harsh ride, you could change to 25mm tyres which'd smooth things a bit more, but won't be a huge difference

    is it on all roads, or just some surfaces? i'm on hols at the moment and there seem to be two surface types here, smooth and pebbledash, on the latter it's just a matter of taking it as fast as possible

    +1 this sounds like a pretty good sum up here. Id bet your shoes may not have the best contact points in the footbed for your feet, so Id try insoles and then if no luck, try different shoes. The specialised footbeds are reasonably padded, but I have no idea if the footbeds in your shoes are anyway, some footbeds really are like thick cardboard and not much more.
  • Bigmitch
    Bigmitch Posts: 65
    It's the chunky Tarmac on the older roads and the patch work when filling lots off pot holes with make my feet num will try some jel inserts and see how I go
  • sungod
    sungod Posts: 16,860
    if you're geting numb feet it may also be due to the shoes not being stiff enough

    in general, a good road shoe sole is so stiff that you can't feel anything through it, not even if you stand on the cleat, the load is spread over your whole foot rather than in hot spots

    the specialized bg footbeds are certainly worth a try, as well as the slight but firm padding, they have a raised 'button' that helps avoid pressure on the nerves
    my bike - faster than god's and twice as shiny
  • Bigmitch
    Bigmitch Posts: 65
    There's a running shop in meadowhall I will check it out at weekend