The Pawls/ Ratchets in the freehub are probably not enganging anymore. Might be due to sticky grease or wear.
BreakfastShart on
Hub is wrecked. Did something catastrophic happen while you were riding, or did you try servicing something?
100issue on
If you’re lucky, this could be that the pawls of the hub are all gunked up. Old grease combining with dust and dirt etc.
In this case, the fix is cheap if you have tools. Look up the hub on the internet (specific brand & model) find out the disassembly. Some of them don’t even need tools and just pull right off with the cassette still attached.
Use an alcohol spray, degreaser etc to clean up the pawls and don’t lose them, or the little springs. Once it’s cleaned up , reassemble with a bit of grease ( people rate different kinds, the the manufacturer will have a recommendation).
If you’re less lucky, it’s goosed.
Edit:spelling
Open_Role_1515 on
Needs a free hub or a rear wheel depending on what’s going on with the hub internally
BasketNo4817 on
When pawls no longer engage, the video in OP is a common issue.
This is a Shimano/SRAM compatible freehub. Pawls no longer engaging with the hub can be sticky pawls due to grease buildup or age (most likely).
Most freehubs come with 3 pawls that are held in by a wire spring. The pawls are oriented in such a way that when pedaling, the pawls engage/disengage with a ratchet inside the hub.
The pawls disengage with ratchet when coasting (this is what gives you the buzz sound when coasting.)
meaniesg on
Thanks for the video, that’s pretty cool and funny and would have left me scratching my head too.
Downtown_River_6980 on
If it was fine last time you rode, chances are the pawls are stuck. If its not serviceable (some are some aren’t) you’ll need to fix it with a new one
8 Comments
That’s busted bro. Time for a new freewheel
The Pawls/ Ratchets in the freehub are probably not enganging anymore. Might be due to sticky grease or wear.
Hub is wrecked. Did something catastrophic happen while you were riding, or did you try servicing something?
If you’re lucky, this could be that the pawls of the hub are all gunked up. Old grease combining with dust and dirt etc.
In this case, the fix is cheap if you have tools. Look up the hub on the internet (specific brand & model) find out the disassembly. Some of them don’t even need tools and just pull right off with the cassette still attached.
Use an alcohol spray, degreaser etc to clean up the pawls and don’t lose them, or the little springs. Once it’s cleaned up , reassemble with a bit of grease ( people rate different kinds, the the manufacturer will have a recommendation).
If you’re less lucky, it’s goosed.
Edit:spelling
Needs a free hub or a rear wheel depending on what’s going on with the hub internally
When pawls no longer engage, the video in OP is a common issue.
This is a Shimano/SRAM compatible freehub. Pawls no longer engaging with the hub can be sticky pawls due to grease buildup or age (most likely).
Most freehubs come with 3 pawls that are held in by a wire spring. The pawls are oriented in such a way that when pedaling, the pawls engage/disengage with a ratchet inside the hub.
The pawls disengage with ratchet when coasting (this is what gives you the buzz sound when coasting.)
Thanks for the video, that’s pretty cool and funny and would have left me scratching my head too.
If it was fine last time you rode, chances are the pawls are stuck. If its not serviceable (some are some aren’t) you’ll need to fix it with a new one