First off the fork im looking into rebuilding is a Spinner Edge 4. Its a bike that at this point I don't want to put much money into. The fork feels unresponsive, it suspends then doesn't seem to bounce back as fast as some forks I use. I am a very competent mechanic, but typically deal with road and rigid MTN bikes.
So could someone explain to what purpose you overhaul forks. Hubs are obvious why overhauling/rebuilding is necessary, but I cant see why forks need to be overhauled, something about seals and things. Or if that's just the way some forks feel? I understand some use oil and some are air. So what I like to call "technical general" info or "low down" on forks and function internally would be excellent. I know some forks are just disposable but the one I have is hardly used. Any info is greatly appreciated. Please no "get a new fork" or "take it to a shop" suggestions since I have plenty of suspension forks laying around but want to get into this, Im long over due. Thanks all! I also posted in the Mechanics forum.