Singlespeed & Fixed Gear - rear gear slipping on threads, how to stop?

I bought one of those fixie conversions off of ebay recently (one of applecart2's)... I've noticed that the rear gear can slip back and forth on the threads if I mash too hard on it. There is a lockring included and I tried to tighten both the gear and the lockring but it's still happening... sucks! Do I need to thread them on REALLY tight? Is there a poor man's fix for this?

thanks!

is it a "fixed gear wheel" or a redished whatver speed wheel?

It's redished. See it here:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3638086418&ssPageName=ADME:B:LC:US:1

i am no authority on this by any means but beyond locktite there isnt much you can do about it, its not setup like a standard track hub. it only has one set of threads so it will never work as well as a track hub. The gear is threaded on and then a lockwasher. On a track hub the cog is threaded on and then the lockring is put on in the opposite direction on different threads and tightened down. you can get a track wheel prett cheap. check sheldonbrown.com. i had a surly hub built on a mavic ma3 rim with double butted spokes and alloy nipples for $110

cuz those bikes are poop. Cheap parts, cheap price, cheap everything. I would ride one of those off Navy Pier into the drink. Get a new 27" rear FIXED wheel. A seller "Hampbike" has them occasionally on eBay, or you can try Harris Cyclery at www.harriscyclery.com
12XU

the bikes are ok, the rear wheels suck.

Thanks... yeah that explains why the lockring doesn't work as I expected it to, being threaded on in the same direction. I'm a newbie to fixed so what can I say, I'm still learning. The positive side is that I do like the rest of the bike so I'm not unhappy with buying it.

If I were to get a new fixed gear wheel and hub would I need a new rear cog or does that also need to be replaced? Also, how important is the spacing measurement?

Get a new rear wheel. It wil cost between 70-100 depending on what you get.

In addition to the wheel you will need the cog and lockring.

AS for spacing, most are 120 so you can just cold forge the rear of your ride. I have done it and it is fine.

Or you can get a hub that is more closely spaced.

If your really concerned take your bike to your trusted LBS and have them build/buy you a rear wheel and let them adjust the chainline. IF it rides fine now you have the current wheel to get your needed measurements.

Matt

Thinman your in Nyc. Take you Ride to Recycle a Bicycle in Dumbo. The Mechanic there did a good job of changing a crankset for me and is good with fixies.

http://www.recycleabicycle.org/

just another suggestion... you can get a fully built rear and or front wheel from van dessel at a reasonable price: http://www.vandesselsports.com/accessories.shtml
xcutterx has their hubs on his van dessel country road bob and seems pleased with them... they are sealed cartridge, super smooth and inexpensive. seems like a good bang for your buck hub. the rear is spaced at 130, which would work great on one of those half arse fixie conversions that applecart2 and cino59 puke out.

edit: oh crap, i just saw your bike has 27 inchers. those van dessel built wheels are 700c. i would just go with a new pair of 700c anyways. finding decent 27" tires is a pain anymore.

Thanks! I'll check that place out this weekend. I've been there before but only to browse. The guys seemed nice enough.

I bought one of those fixie conversions off of ebay recently (one of applecart2's)... I've noticed that the rear gear can slip back and forth on the threads if I mash too hard on it. There is a lockring included and I tried to tighten both the gear and the lockring but it's still happening... sucks! Do I need to thread them on REALLY tight? Is there a poor man's fix for this?

thanks!

I rode my first fixie for several years with the exact same setup as yours and have friends that still do. You need to thread the cog on very tight and use blue locktite - use a chain whip to apply torque. Then use loctite on the lockring and tighten it as tight as you can, using the proper BB wrench. Let the loctite set up and you are ready to ride. It will stand up to braking forces if you do it right. Also clean all the threads as clean as possible with a solvent that leaves no residue before assembling with loctite. Contamination will ruin the bond. Give it a try before you spend money. Like I said it worked for me - never loosened ever. My new fixie has a Surley flip flop hub with real left handed lock rings.

I rode my first fixie for several years with the exact same setup as yours and have friends that still do. You need to thread the cog on very tight and use blue locktite - use a chain whip to apply torque. Then use loctite on the lockring and tighten it as tight as you can, using the proper BB wrench. Let the loctite set up and you are ready to ride. It will stand up to braking forces if you do it right. Also clean all the threads as clean as possible with a solvent that leaves no residue before assembling with loctite. Contamination will ruin the bond. Give it a try before you spend money. Like I said it worked for me - never loosened ever. My new fixie has a Surley flip flop hub with real left handed lock rings.

that just seems like a scary rig to me. i would not trust my life with some rigged fixed hub. maybe it did work for you but it just seems not worth it considering how cheap you can get a low end track hub for.

Yeah, I'd shell out the bucks for something with a real lockring. What's your health worth?

I have a couple of properly built up wheels that that are for sale. E-mail me and i will give you the particulars.

fixedgearhead@ecr.net

Yeah, I'd shell out the bucks for something with a real lockring. What's your health worth?

Good point. :)

Sheldon sells LH thread lockrings at Harris for like $7 or something like that. Forget how much I paid for mine. Also a good source for non-ramped chainrings and everything else fixie.

I bought one of the Van Dessel wheels in November. They are cheap and great. They no longer come with a cog and lockring becuase people were complaining that the compnents were cheap (which they were). Still a great deal.