Originally Posted by 14R

Because of the cantilever/monoblade rear hub, here is what you can do:

-Request a Giant Halfway rear hub with 7 Speed (they do not have one with 2 or 3 speed, it's 1 like yours or 7);

-You can change the front chainring for one a little bigger, giving you a higher gear (still single speed). You cannot go as big as 50+ (I went with 54T on my RS) because of the frame geometry;

-you can buy one of the few systems that add gears to the front chainring internally. They are VERY expensive, would be cheaper to buy another bike, but it is an option.

And here is what you CANNOT do:

You cannot use an internal Hub. That would give you EXACTLY what you are looking for. That's actually why the RS is a superior bike, you can add pretty much anything conventional to the rear wheel. For the same reason, you cannot use a Dual Drive (combination of internal hub and derailleur).

The Giant Halfway single speed was designed for those without the need of more than one gear. Anything different than that, they have the bikes already vailable for you (Halfway 7S and RS). Mine is the Halfway RS, with proper tunning, it is not springy and now features a nice range of 24 speeds. I can keep a nice 16mph for a few hours, I can reach maximum speeds o 28mph for a few seconds, but I can still go up hills with my bike fully loaded, like on this picture



My suggestion:

If you like the Halfway and need more gears, get the 7S. If you need more than 7S, get the RS. You can block the suspension, change it, whatever you want to make it less springy, and still pla as much as you can with your rear wheel.

Good Luck, come back and let's us know what you do.

Rafael