Dug up an old schwinn for a buddy to try a duathlon on. We run road races together and he wanted to give it a try with a minium of expediture. Mechanically it is not bad, little brake/shifter adjustment, new tires/brakepads. It is not going to be fast and he doesn’t care he just wants to finish. Problem is I think that the hubs need to be greased or something, give the rear wheel a spin and it grinds to a halt in 4-5 revolutions. I am not a bike mechanic, but it doesn’t seem like that big of a job, where would I look for directions? or is it simple enough for one of you to talk me through online?