I have to replace the fork on my cheap hybrid bike, and this is my first time replacing a fork and I'm not sure I know all I should know to buy the right fork online, especially since all/most of the advice is for expensive road/mountain bikes.
The frame and the current fork are made of steel, the frame size is 18", the headset is threaded, the headset locknuts are 36mm wide, the bike has V-brakes and the current wheels are 700c. I'm not sure whether some of these details are irrelevant, but have I missed anything that is particularly relevant?
I haven't yet taken taken the current fork off because I'm waiting for the spanners to arrive, but I've been doing some shopping to see if I can order the fork now and there are many details that I don't understand in the listings I've seen. For example, there's a listing on eBay that describes the fork as "700c HYBRID FORK V+DISC MOUNT 1-1/8"STEERER 28.6mm ,260mm THREADED BLK F757" and there are some further details about other measurements. Are all of these details relevant to me?
Also, I'm puzzled that I haven't seen the length of the forks, and from what I've read (e.g., on Sheldon Brown's site), these do vary.
Thanks in advance!