Originally Posted by
katsup
This Trek 520 (1990) was originally a drop bar, but I bought it cheap since it was converted to a flat bar. I believe it can fit up to 42mm tires, but I run 35mm as it is my main commuter. I have heard the Trek Multitrack 750 and 790 hybrid from these years were the same frame, but with lower end components
Yup- the 750 is a 520 frame. My brother in law has a 750 as his drop bar gravel bike. I found it at our local collective and it was built into an awesome cheap gravel bike. Its a '92(i think) thats blue and is lugged with True Temper tubing. Tons of brazeons- its capable of handling full touring too.
He has 41mm Knard tires on it and the clearance is tight, but perfectly fine during dry gravel riding which is all he does.