Freewheel/Gearing Question

Hi. I've used the search function before I get flamed.

I was just wondering if I could remove the freewheel from my fixed gear, but could I replace the free wheel on my flipflop hub with another fixed cog so that I have two different sized fixed cogs?
All the other posts were just about removing it, but like I said, I want to replace it with another fixed cog of a different size.

Another quick question. What gearing would be good for skidding, leg braking? I'm still running a front brake atm with a 44:16 ratio, but it seems stiff and over powering when I back-pedal, plus I live in a hilly area so I need to gear down as well. Was thinking 44:17 or 44:19.

If you need additional info, I've got a Fuji Feather 2012 with stock transmission parts, just Shimano SDR clipless pedals.

Thanks guys.

Very few hubs allow a fixed wheel lock ring on both sides. Without the extra left hand thread for a lock ring (and the lockring itself) the fixed sprocket will screw on in place of the freewheel, but unscrew again when you apply back pressure.

You might be lucky, when you remove the freewheel, to see the extra threads.

Some hubs are double fixed (like mine) but most OTP fixies are fixed/free.

Ah right. I was looking for specific double fixed hub, but I was just seeing if I could have done it with just the flipflop hub.

What about the gear ratio question?

Just to clarify, you can fit a fixed sprocket to the freewheel side, the thread is the same, but you won't fit be able a locking so it can unscrew itself with back pressure on the pedals.

As to ratio, its a very personal thing. Try the ratios and see how it feels. I use 42 x 17 but live in a hilly area and use 2 brakes.

I'll take the freewheel off if I can manage it and have a look if it's possible to fit a fixed cog on.

Would you agree 44:16 is too high? I didn't want to change the chainring atm, so I was just gonna change the rear sprocket to 19.

You'll be able to fit a fixed cog, no question, it's the [lack of] lockring that's the problem.

As to the gear, too high for what? If I only rode in town, on the flat then it's fine. It's cheaper to change the sprocket so go ahead and try it.

I have a lot of hills in my area that's all. I have to stand up and pretty much jump on the pedals to get up the hill. Not a comfortable journey coming back home.

Well, you need to lower your gear then.