Fixed hub, stripped threads?
 

I'm gonna build my first fixed and got a hub where the two first inner lockring threads are more or less missing, is it possible to use it anyways, can I use two lockrings? I would appreciate any help!
Thanks
J.A

if you insist on using that hub i would loctite the lockring on and please please use a brake.

need pics

noodz

picture
 

ok, here's a picture.

that hub is fine... what i would do if i was you is to put the cog into a english bb tapper to be sure the threads in that cog are fine prior to install it... the cog must get in there just like butter... the guys in a lbs can do it, it will take like 10 mins... usually cogs have a super rough thread and must be passed again in a tapper. EAI cogs or almost any cheap cog have the problem... some shimano's and some campy's also... Some of them not all.

If you dont have a tapper or an lbs use a super old hub and put the hub in there untill it fits like with butter then put it back in that nice hub u want to use. I bet you dont want to damage the hub again... wonder how u can screw up the last threads of the lock ring... probably the guy put the wrong lock ring in there... This is an old trick I learned like 30 years ago and I have never stripped a single hub ever. Usually people just put the cog in there and it fits super tight, in a matter or fact the fit in general is too tight. is the right thread but tight... U can strip the darn hub, besides the steel in a cog is too had for the hubs threads. So take the cog to the shop and tell the guy to use the english bb tapper in that thing untill it fits perfect in the tapper (5 or 15 mins max) then put it back to the hub...

Good luck.

If the cog you use is wide, meaning it contacts many threads (like an EAI), then you might be fine.. it needs to be wide enough to protrude past the cog threads and the messed up lockring threads.

You could still concieveably use the hub, but I hope you do realize that it will be a sub-optimal setup, and it could strip out at almost any time.

What type of hub is it? Unless it is something super super nice, I'd just buy a new formula/dimension/etc. sealed fix/fix hub for $40 or so and be done with the mess. It would suck to build a wheel or pay for a wheel build with the crappy hub, and then to have the whole mess strip out on you 2 weeks later.


But if you still want to try to make the hub work, make sure the cog is on there super tight, then locktite the lockring on...and realize that it will be a ***** to change the cog.

Thanks for your help everybody!
I would buy a new hub but where I live I need to pay a lot in shipping so it got to wait..

another option:
put spacers on before the cog to push the cog out over the good threads
then just use a regular lockring.

not ideal but if you have a brake you can get away without the lockring anyway(search "suicide")

Get yourself a thread file and a Pauls lockring.
http://buy1.snapon.com/catalog/item....re&dir=catalog
http://www.paulcomp.com/lockring.html