Bike chain keeps coming loose?

[forder89]

washers would help but the axle or the nut might be threaded, try a washer if it doesn't solve it then try a new nut. you could also put PTFE thread tape on the axle. if all this fails just buy a new wheel, they aren't expensive

 

[Team mullet]

Get a lock washer to hold everything tight. Or you could just take a link out of the chain to make it shorter.

 

[655321]

It's a simple 1-speed bike and the chain keeps coming loose. It's obvious how to tighten it but whenever I do after a minute of riding it's significantly loose again. How can I stop the axle from moving forward? Would putting a washer on solve the problem or should I just look for a way to block it from moving at all? Thanks.

 

[Eric W]

I would take it to a local bike shop. I think that's your best bet. Try to take it to a local shop that deals in higher end bikes, or somewhere like REI, not a chain sporting goods store like Dick's or Sports Authority.
The store will probably be able to fix your problem in a few minutes and may even do it for free. If not, it should only be a small fee. Also, if any parts are needed, they will probably have them on hand.
You may want to get a new chain while you're there, as the one you have is probably worn if it's as old as the bike. They'll have a tool for measuring the chain length and let you know if it needs to be replaced.
Last thing: I don't think a washer will fix your problem, but I'm not sure.

 

[Dan E]

Try replacing the nut with a lock nut. You can get one at any hardware store

 

[Dan E]

Try replacing the nut with a lock nut. You can get one at any hardware store