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Besides a Lockring, what can replace a lockring?

Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

Besides a Lockring, what can replace a lockring?

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Old 07-24-09, 09:29 AM
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muckymucky
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Besides a Lockring, what can replace a lockring?

im stuck here in canton china and they've never heard of fixed gear lockrings. i need to know what ghetto method can replace having a lockring. (Hub: Formula Fixed/Fixed)

help a broth'r out.

Last edited by muckymucky; 07-24-09 at 09:39 AM.
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Old 07-24-09, 09:30 AM
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nothing.
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Old 07-24-09, 09:37 AM
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What type of hub do you have? Is it a fixed gear type with separate left-hand threads for a lockring, or is it a single speed hub with only one set of threads? If it is a true fixed gear hub, then about the only thing you can do is put the cog on real tight with locktite, and use a front brake. If it is a single speed hub, then you can use a left side bottom bracket lockring. Maybe someone else here has a better idea.
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Old 07-24-09, 09:38 AM
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I've heard of people throwing a properly threaded BB lockring on there and wrenching/locktite'ing it down hard. It'll be threaded in the same direction as the cog. Obviously no skidz on this setup.

Other than that:
Weld the cog on to the hub. I'm assuming you're traveling over there or something and the bike is going to get tossed if you can't solve this issue, so this may be the best route. Obviously the hub will be "ruined" in that you'll never be able to change the cogs, but it'll work. Even if you can't find a lockring, chances are you can find someone with a welding torch.
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Old 07-24-09, 09:39 AM
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Ordering one from overseas can replace a nonexistant lockring in Canton, China.

You can only use a BB lockring on a freewheel-threaded hub, as you need enough threads for two items. And since it's not reverse threaded, it doesn't really do much.

You can't weld it, as the person above me suggested. Steel and aluminum have a notoriously difficult time being welded together.
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Old 07-24-09, 09:39 AM
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ALSO, another option is to get rid of the lockring type mechanism all together. You could bolt your cog onto your hub if you have hi flange hubs. this should work if you do it well. It could also break something, I donno, but in a pinch I would probably give it a try. Another option along these lines is to weld your cog onto the hub. Or, use red loctite (or its chinese equivalent). You wouuld be surprised how tough that stuff is.


AND, some people don't even ride w/ a lockring. You could try this if you don't want to ruin your hub. When I went to my local velodrome, all of the rental bikes didn't have lockrings. Granted, people don't skid w/ them, but people do still apply back pressure on the pedals.

Also, why can't you just order something off the internet? I know there has to be some place that delivers to china. How far are you from hong kong, beijing, etc? I'm sure they have fixies

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Old 07-24-09, 09:41 AM
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Bottom bracket lockrings are not reverse threaded. They have the same threading as cog threading.
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Old 07-24-09, 09:44 AM
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My mistake. Edited.

Every other suggestion is still a viable option, though.
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Old 07-24-09, 10:41 AM
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Except the first one. How would you bolt a cog to a formula track hub?

If you don't have a lockring, red loctite is about the only solution, other than ordering a new lockring.
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Old 07-24-09, 10:46 AM
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Use the rotofix method to put the cog on and use a brake until you can get the right part. Everything else is rather silly.
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Old 07-24-09, 10:52 AM
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I imagine gobbing a bunch of solder onto the threads of the hub would keep the lockring from threading off, whether the two alloys are mated or not.
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Old 07-24-09, 10:59 AM
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how did you get a formula track hub in an area that doesn't have track hub parts? if you ordered the bike, order a lockring too? if you brought the bike with you, why didn't you have a lockring?



ive heard of people passing on the lockring and either welding or loctit-ing the cog to the hub...personally, i'd tighten the hell out of that cog then weld it on. sounds like you're not really looking to go the distance on getting a lockring, so why not just weld the sucker.
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Old 07-24-09, 11:02 AM
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Hot rivets. Only the huge kind and they have to be red-hot or will loose too much street cred before being properly pounded into place.
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Old 07-24-09, 11:07 AM
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Isn't 3/4 of this crap made in China? I find it tough to believe it's 100% for export.
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Old 07-24-09, 11:16 AM
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Thread is full of facepalm. I would not do a single thing mentioned in this thread.

get a new lockring.
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Old 07-24-09, 11:27 AM
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Originally Posted by time bandit View Post
Thread is full of facepalm. I would not do a single thing mentioned in this thread.

get a new lockring.
How can you say the thread is facepalm when you so obviously did not read the thread?


I know you didn't read the thread, because he's asking for ideas which don't involve a lockring.
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Old 07-24-09, 11:40 AM
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I wouldn't do this stuff either, but I'm not stuck in china w/o proper parts. If I didn't have a lockring, I probably would do this stuff. What's the worst that could happen? You ruin a cheap formula hub.

As far as bolting the cog goes, you drill holes in the cog and then put bolts through the cog and through the holes that are on formula hubs. Then you just put a nut on the inside and tighten it down. I have no idea if this would actually work, I was just sort of brainstorming possibilities. I think it might if you had strong enough bolts. Honestly, though, the other options (welding or loctiting) are probably better ideas.
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Old 07-24-09, 11:52 AM
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I am about to get crucified for this, but here it goes:

I stripped the threads on my hub for the lockring (must have threaded it on wrong or something) so I am running a suicide hub (no lockring).

I just rotafixed the cog on really tight, haven't even bothered loctite or welding the cog on, I just did the rotafix.

I skid, trackstand, etc and haven't had a problem at all.

I just tried to reverse rotafix the cog to get it off and couldn't.

I am at 75 gear inches, so nothing too hard, and I weigh only 130 pounds, so there probably isn't THAT much pressure in the first place.

Anyway, have at me.
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Old 07-24-09, 12:02 PM
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Originally Posted by monkeywithacold View Post
I am about to get crucified for this, but here it goes:

I stripped the threads on my hub for the lockring (must have threaded it on wrong or something) so I am running a suicide hub (no lockring).

I just rotafixed the cog on really tight, haven't even bothered loctite or welding the cog on, I just did the rotafix.

I skid, trackstand, etc and haven't had a problem at all.

I just tried to reverse rotafix the cog to get it off and couldn't.

I am at 75 gear inches, so nothing too hard, and I weigh only 130 pounds, so there probably isn't THAT much pressure in the first place.

Anyway, have at me.
It's not THAT surprising, especially if you didn't bother greasing the cog or anything before you rotafixed it. I still wouldn't run it without a brake, but other than that... whatever works.
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Old 07-24-09, 12:23 PM
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Originally Posted by muckymucky View Post
im stuck here in canton china and they've never heard of fixed gear lockrings. i need to know what ghetto method can replace having a lockring. (Hub: Formula Fixed/Fixed)

help a broth'r out.
It's a bike. You broke it. Be happy that it didn't break you.

The 2 smart options:

1) Get a freewheel and some brakes and go SS for a while
2) Wait till you find a proper lockring

If you don't, guess what. If you crash with one of the other methods listed above, it's your fault.
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Old 07-24-09, 12:43 PM
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Originally Posted by muckymucky View Post
im stuck here in canton china and they've never heard of fixed gear lockrings. i need to know what ghetto method can replace having a lockring. (Hub: Formula Fixed/Fixed)

help a broth'r out.
Can't mail-order one in China?
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Old 07-24-09, 01:05 PM
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metal bonding epoxy. Just don't skid and use a brake.
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Old 07-24-09, 01:16 PM
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Originally Posted by muckymucky View Post
im stuck here in canton china and they've never heard of fixed gear lockrings. i need to know what ghetto method can replace having a lockring. (Hub: Formula Fixed/Fixed)

help a broth'r out.
If you can post on this site from Canton, you can get yourself another lockring.
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Old 07-24-09, 02:46 PM
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one more outlandish idea: drill through the cog itself at 12 o'clock and 6 o'clock, right into the threads of the hub with the cog installed, but not all the way through . install either screws or pound in pins to keep the cog from moving. it will ruin both the hub and cog, but may work if ALL other options have been exhausted.

can you really NOT order a cog?
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Old 07-24-09, 02:54 PM
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Originally Posted by dsh View Post
How can you say the thread is facepalm when you so obviously did not read the thread?


I know you didn't read the thread, because he's asking for ideas which don't involve a lockring.
you obviously missed me ending the thread in the first reply, by saying "nothing"

you are all giving out some terrible advice. i might try one of these things, but would never recomend others to. its just bad advice no matter which way you look at it.
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