Lately I've noticed a very slight amount of slippage when I use a lot of force pedaling (i.e. starting from a complete stand still). This usually happens right after using a bit of force back-pedaling.

I assumed it was a simple case of a loose cog or lockring (note: these are brand new albeit rather inexpensive). I checked both (with the proper tools--chainwhip and lockring wrench) and they seemed fine. Then I checked the chainring bolts which needed a bit of tightening. All to no avail--the slipping is still there.

My next thought is to replace the chain as it's pretty old, anyway. Or could it be a stripped hub?

Any ideas?

Thanks.

The only part of your drivetrain that couple possibly be "slipping" is your cog. If your threads are damaged, no amount of tightening it (even with the proper tools) will be a remedy.

Thanks.

Yeah, that was my assumption. I checked the cog and lockring, and they're both tight. Any ideas why things are still slipping? So perhaps it could be stripped cog and/or hub?

Either that or your cog isn't as tight as you think it is before cranking down on the lockring.

Thanks. I'll get someone stronger to tighten it. Maybe that will help

With any luck, he'll strip the hub and leave you with no doubts