So I finally bought a new bike (Cervelo R3) that I found on ebay but need some help / advice on changing the current gear ratios.
It has come with full campagnola athema carbon groupset with 53/39 chain set and 11 speed 11 - 25 cassette.
My other bike had a triple chain set so this race set up is a little shock to the system and I simply dont have enough gears to get up the steep climbs I’m training on.
I'm 6 foot 2 and weight around 235 pounds, so not the smallest or lightest of riders. But the big ring on the new bike is a lot of fun and fast on the flat!
I'm currently training for the Wiggle Dragon ride (127 miles and 3500m of climbing) and so want to get a new gear set up to cope with this.
This is a link to the bike if you need to see the componants http://www.ebay.co.uk/itm/CERVELO-R3-2011-/160980484439cmd=ViewItem&ssPa...
So my questions are:
Can I get away with just a new rear cassette? If so what ratio would be best? Do I need to change anything else if going for a 12 - 29, like the chain or rear derailleur?
Would it be an option to change just the bottom chain ring and keep the 53 or is not the done thing? Again would I need to change anything else?
Any help would be great as I really don’t know much about gears or campagnolo.