Seatpost layback

davecooper
davecooper Posts: 290
edited June 2007 in Workshop
There seem to be a number of seat posts appearing now without any "layback" Are these becoming more popular? I have noticed a few new bikes that have these fitted. I can see that this could compensate for too large a frame but does it compromise riding efficiency?

Comments

  • monty_dogcp
    monty_dogcp Posts: 382
    Many people want them for TT bikes to get the saddle further forward over the BB. Buy the seatpost that suits your frame / riding position rather than follow fashion - I've got an FSA post with a whopping 32mm layback on one bike, does that may me un-trendy?
  • Pirahna
    Pirahna Posts: 1,315
    Also depends on the seat tube angle. I've got a post with 10mm set back on one bike and 25mm on another to give me the same position.
  • portuguese mike
    portuguese mike Posts: 695
    The efficiency of your riding position (in terms of pedalling) is dependant on achieving the correct relationship between saddle and bottom bracket. generally speaking this sould be such that when the cranks are at a quarter to three the front of your knee (on your leading leg) should be directly above the pedal spindle.

    it doesn't make any diference, per se, whether you have a set back seat post or not providing you can achieve this. i, however, don't have much of a choice as i have pretty short legs and with the angle of the seat tube on my bike i have to use an inline post to comfortably get the saddle in the right position but it's probably not much of an issue for normaly proportioned folk.

    as far as i was aware it wasn't a fashion thing

    pm
    pm
  • pjm-84
    pjm-84 Posts: 819
    I've just replaced my seat post for an inline one to suit riding efficency.

    Paul
    Paul

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