Swapping components from small frame to bigger frame.

coast rider
coast rider Posts: 3
edited February 2011 in Road beginners
Hello. I'm new to this site and not sure if this post is in the right place. Great site by the way.
I have been into road cycling for the last couple of years after taking my old mtb in for a service. Whilst the bike was in for a few days the shop owner kindly gave me a "proper" road bike to use....I had never ridden a proper road bike and was very impressed with it....so much so that i sold my MTB bike and bought the very racing bike i was given to use...along with all the "right kit".
The bike is a Sunn Motive...Alu frame, carbon forks, 9.3kgs with Tiagra gears and shimano fittings....(I'm not too clued up about bikes and the bits that make them go fast but this seems like a good first bike)I think its a very very nice bike...Now the problem I have is that i think its too small for me (after 2 or more years of riding it i was beginning to feel something was'nt quite right). I am 5.11 . 32 inside leg and 12 stone and the bike size appears to be small as i recently measured the seat tube from crank case to the top of the seat tube...which is 50cm. I believe the right size for me should be maybe 56 or 58 cms. I have tried all the adjustments possible on the bike and am sure its just not the right size.
I could px it for another bike that fits me or i could buy a bigger frame and bars (maybe a posh carbon job) and swap all the components from the Sunn to the new frame...but I'm not sure if that would work. i am pretty handy with a spanner and would get myself the right tools before i started....but what I'm not sure about though is if its straight forward...or would diametres etc be different on a slightly bigger frame!
Thanks in advance for any advice.


  • The main things to check would be headtube length, because if they are massivly differnt the old fork may not fit in the new frame, also the seatube might be a differnt diamter meaning a new seatpost, and the front mech might mount differntly.

    You would also need to replace the cables and chain because the differnt size of the new frame.

    Cotic Soul
    Pearson Hanzo
    Airborne Zeppelin
  • Thanks for that reply. Could turn out to be more trouble than its worth...especially for a newbie. Maybe i will sell the Sunn and buy another bike that fits me.