Singlespeed & Fixed Gear - fixed/fixed hub used for fixed/free

I'm going to get all my fixed questions out in one evening...

I'm looking for a hub for my singlespeed to use to build a fixed/free rear wheel. If I consider a hub that is set up for fixed/fixed I think I could leave the lockring off one side and thread on a single speed freewheel (BMX, etc.). My question is: It looks like the freewheel portion of the thread on a fixed side is shorter that the freewheel thread on a freewheel side of (a freewheel) hub. I wonder if there is enough thread engagement to prevent spinning the freewheel off e.g. would that be too weak?

Thoughts, suggestions?

Thanks!

There's no way to spin a freewheel off unless you are trying to (meaning, if you are using proper tools and that is your goal).
If you are talking about stripping the threading b/c of forward torque, I've never heard of anyone doing that.

There's no way to spin a freewheel off unless you are trying to (meaning, if you are using proper tools and that is your goal).
If you are talking about stripping the threading b/c of forward torque, I've never heard of anyone doing that.

I'm talking about the latter...thanks for clarifying my question. I hadn't heard of anyone doing that either but wasn't sure if anyone else had any issues.

i've known a couple people who ran freewheels on fixed hubs... they're fine...
you will be too...

sheldon approves. so do it.

The guys at my LBS indicated that as long as you have 4 complete threads engaging the freewheel, you should be fine for road/commuter riding.

Just to add another positive voice. I did this for a while. As long as you have some thread engagement it works. At some point I realised the freewheel hadn't been used in a long long time and took it off.

This might not work for trials, but other than that, you should be fine.