fixed cog on single speed wheel?
 

Hi, i just built up a single speed and was wondering if i could try fixed without having to buy a new wheel. Is there a way I can attach a cog to the wheel even though it doesnt have the reverse thread for the lock ring?

Thanks,
Richard

just thread it on with your hand, it'll be fine. seriously.

ummm no it wont, considering it will still have a freewheel due to the hub it won't work. he needs a fixed gear hub to make it work, and will probably need to space it out. so NO it won't work.

-1 nonsensical

if he has brakes it's fine. If he rotafixes it it's more that fine

Use a good, quality cog and use a brake. Occasional back pedaling will not back the cog off. Don't even bother using those useless bottom bracket lock rings.
I run a fixed cog on the single speed side of a flip flop hub all the time.

the hub itself is not a freewheel, there is a singlespeed freewheel threaded on there

I (we) know that...

more proof that all childeren should be required to maintain and fix their own bikes

I've been running fixed on a freewheel hub for 20 years w/out a slip.

time was, prettymuch every roadgoing fixed was that way.

How does the cog not come off without something holding it in it's place?

No

dear god, sarcasm over internet is completly hopeless. kill me.

Does the lid on a mayonnaise jar unscrew itself?

oh jesus this thread sucks. I think the original useful response was sarcasm, but here we go...

you can indeed thread a track cog onto a road wheel designed for a freewheel or thread-on cassette. this is called a "suicide hub" because you are running with no locking, a few good skids potentially *could* throw off the cog, leaving you to fall to a bloody, tooth-lossed mess. however, with brakes (to minimize backpedalling) and some red (uber-permanent) locktite you can be pretty sure it will never happen.

And if you can thread a BB lockring to it.

+1 on loctite.

I have a bike with a very low ratio and beat the hell out of it, and skid like crazy, and the loctite (and BB lockring) have held up fine. I'm also running a brake, more precautionary than anything.

But, I don't plan on taking the cog off anytime soon, and if I ever do, I'm sure I'll mess the hub up trying to take it off.

yeah as a warning if you use red loctite and rotafix the cog on it is a really low-level fastener (as in it bonds the hub threads and cog in a metallic-like way) so it's basically never coming off. if you could find the strength to remove it, the hub threads would likely just rip off.

are you for real? Didnt you ever notice Mayonnaise comes with that plastic seal over the lid? Mayonnaise without that seal is called 'suicide jar' for a reason you know.

At a minimum, thread on with red loctite and a strap wrench.

If you clean the threads before you tighten up the cog, and use blue loctite and the rotafixa method of tightening the cog, you shouldn't have any problems. I rode a bike like that for 6 months with no problems. Keep a brake on anyways.

Centrifugal forces.

I saw this with regards to the Rotafixa method and though it interesting

http://www.fixedgeargallery.com/arti...ance/lance.htm

+1

:roflmao: I forgot about that plastic lock ring...