Singlespeed

mygrumpy

Hi All.Screw on cog, do you need a locking ring.John

stimpy_76

Fixie - yes unless you want a world of pain

Singlespeed freewheel - probably not (but it wouldn't hurt)

mankybianchi

I have used a Campag screw-on hub from the early nineties just to see how I got on with a fixed wheel. I ended up keeping this setup for four years without a lock ring. A couple of years ago I rebuilt the wheel using an On-One track hub in order to use a lock ring.

I never had a problem without a lock ring as I wasn't into skidding or huge amounts of leg-braking.

A hub without a lock ring reverse thread is sometimes called a suicide hub.

Monty Dog

Plenty of people ride track sprockets without a lockring, it just needs to be on really tight. That said, a lockring is good insurance. If riding a high enough gear, if you lock the back wheel, you'll just skid rather than unscrew the sprocket.

mz__jo

It all depends if you skid or not and how hard. I have never had a sprocket that came undone easily after the first hill, locking ring or not. I have ridden with a normal freewheel hub with a fiixed sprocket and no lockring without any problems but I usually use a double fixed hub with a lockring for the fixed sprocket (but not for a freewheel, no point and usually not enough thread either). Its for the piece of mind. You may be required by law to have a lockring if you don't have a rear brake (can't be sure of that, in France I have to have two brakes and they have to be "independant of the transmission" - coaster brakes technically don't count either).
Cheers Jo

mattsccm

The OP said single speed not fixed so the answer is no. A lock ring is not used.

mz__jo

mattsccm wrote:

The OP said single speed not fixed so the answer is no. A lock ring is not used.

OP says screw-on cog. To my mind that usually means fixed.

Cheers Jo