dailydriver

Hello. I just peurchased a 3 wheelled Huffy Escape (the large rear basket is a feature that I find useful). It was used and it has onlytwo sprockets (one for the pedals and the rear right wheel) there is a pulley on the frame near the larger sprocet where the pedals are. It is a chore to pedal up steep inclines. How would I either get parts for this bike to make it a 3 speed or modify it to have more gears? any help in this regard would be appreciated!

Dan Burkhart 

In my opinion, the best upgrade available for a trike is the Sturmey Archer 5 speed gearbox. It would replace your single speed mid drive with a 5 speed, and the best part, a reverse gear.
Here's a link
https://www.sturmey-archer.com/products/hubs/cid/6/id/46
I just went back and re read your post, and from the way you describe it, I'm not sure your trike has a mid drive, so this might not be an option.
Can you post some pictures showing detailed closeups of the drive train?

JohnDThompson 

What kind of rear hub do you have? I suspect Sturmey-Archer if it is the original equipment. These tend to be extremely durable hubs and most problems are a result of lubrication failure. If there's an oil cap on the hub, squirt some light machine oil (avoid vegetable based oils) in to the hub and ride it around to loosen things up.

Is there a shift cable coming out of the hub, over the pulley you described and attached to a shift lever? If so, does the shift lever move? Does the cable move? The cable may be rusted solid in its housing. If so it will need to be replaced.

gitarzan

Take the trike to a Local Bike Shop. They can fix you up.

Dan Burkhart 

Well, I don't know from the OP's description if it has a gearhub in it. The thread title would seem to indicate it does, but until the OP gets back to us with more info to clarify, I don't think we can be much help.