Im trying to insert a 7 speed gear and disc brake on the front wheel of a recumbent cycle that I'm trying to make. However its difficult to find or almost impossible to get forks with widths that accommodate such components. My aim is to make a FWD cycle. Can it be fabricated if not available as such? If so, can someone tell me how?
If you are looking to re-purpose off the shelf components: Fat bike forks use dropout spacings of 135mm and 150mm, I believe. Road disc brake bikes and some mountain bikes use 135mm rear spacing, so you should be able to combine a fat bike fork and road rear disc hub. A 135mm rear hub will have space for an 11 speed cassette, but you can use spacers to fit a 7 speed cassette.
If you are building a front wheel drive recumbent, you'll have to at least do some fabricating for the frame attached to the fork that holds the bottom bracket bearings, cranks, derailleur etc. That would include welding steel or aluminium tube. If you can do that you can also design a fabricate a custom fork.
Atomic Zombie is a website with a lot of DIY bike designs, including this FWD recumbent, which may give you some ideas. There are a few FWD recumbents you can buy off the peg, including the Cruzbike and some models from Performer. No idea if they would sell you just a fork.