New forks: advice on rake
I'm running a Trek 2.3 (2010 model) and need to replace the damaged carbon fiber forks. The bike is size 56cm, has a 73.5 degree headtube, forks with 40mm rake (offset), 58mm trail and 983mm wheelbase (all data from the Trek catalogue). It's a stable and self-assured ride though perhaps it's a little too stable sometimes. I've seen a lovely pair of Ritchey forks but the the rake is 45mm. I appreciate how this will change the way the bike rides and feels via its impact on the trail (longer rake = shorter trail = livelier handling). My question is will the leap from 40mm rake to 45mm rake provide just a bit too much liveliness? Would I be better going for 43mm or maybe even sticking with safe 40mm?
All the dimensions of all the 56cm Trek bikes in the Madones, 2 series and 1 series (in the 2010 range), are the same (as mine, above). The dimensions change according to the size of the bike frame (for example, 54cm have 73 degree headtube, 45mm rake, 56mm trail and 981mm wheelbase). I guess there's a pretty good reason why they choose these configurations?
I've found this tool quite useful in providing me with the data that a different rake will produce: http://yojimg.net/bike/web_tools/trailcalc.php
So, 45mm rake or 43mm? Any thoughts and advice will be greatly appreciated.