« on: January 26, 2010, 06:00:16 am »
Hi, we don't see too many Trek 520s in the UK but the specification looks pretty good. SKS do a good range of fenders and should fit easily. The original tyres, according to Trek's website are 700x32 which is OK but I agree with you that you a larger size is a good idea. I use 35s and 38s which are both very comfortable. As for tyre choice, Schwalbe Marathons are generally regarded as being pretty good. If you can get them in the USA, Panaracer Pasellas are also excellent and roll faster than the Schwalbes because of a smoother profile. The Schwalbes will be a better choice if you are likely to ride some rough stuff.
With regards to saddles, the Brooks B17 is an excellent saddle. Be warned, however, that they can take 1000 miles or so to break in. They don't suit everyone so my advice would be to go with the standard saddle and see how you get on with that first. Brooks also do a pre-aged saddle which makes the breaking in process a little easier.
With regard to lights, it may be worthwhile to consider a front wheel dynamo, Shimano produce a very good product. You can then have your lights on permanently without having to worry about batteries. Failing that, Topeak (I think) make a very nice solar powered light.
Plenty of choice on bar bags bu probably Ortlieb is your best bet and most easily available. My own choice would be Carradice but I don't think they're easily available in the States.