I re-entered bicycling in 2005 with a Trek 3700. It was a fine entry level bike but its shortcomings quickly became apparent. I eventually built up some road bikes and upgraded to a nicer mountain bike, so the Trek sat in a corner of the garage collecting dust.

My 20 y.o. son wanted to join me for some MTB rides. With his college tuition a new MTB is not in the budget, so I undertook a rebuild project on the Trek.

I scoured LBS clearance bins, Nashbar, and Universal Cycles. Ultimately I spent about $400 on the build. This seems like a lot for a bike that only cost $275 brand new, but some of the cost covered maintenance items. I could have maybe gotten $100-125 for the 3700 on Craigslist, and I don't think a $525 new bike would be any better than what I built.

Upgrades:

Dimension rigid fork, Cane Creek 10 headset
Clarke hydraulic disk brakes
Disk brake adapter from Trek
Deore/Sun wheelset
SRAM PG950 cassette I had laying around
Deore 9-spd rear derailleur and shifters
Origin8 handlebar and some stem I had lying around
Specialized The Captain Control tires

By far the best upgrade was replacing the boat anchor RST fork. At some point I'll replace the original crankset, too.

We took the Trek "3700 ver. 2" for an inaugural ride on McKenzie River Trail a couple of weeks ago. My son and I switched bikes at one point and while the fully-rigid Trek 26er is a bit more "lively" on rooty terrain than my air-forked 29er, it gets the job done. Enjoy the pics!Trek 3700.2-20130830_111046s.jpgTrek 3700.2-20130830_110826s.jpgTrek 3700.2-20130830_111110s.jpgTrek 3700.2-p8031143s.jpgTrek 3700.2-p8031158s.jpg