Replaced my freehub, now wheel can turn from backpedling

Wednesday

Active Member
Location
Brighton
Hi. I haven't been here for a while because I'm not much use, but if anyone knows what's going here I'd really appreciate a clue.

I had a bit of an issue that my LBS diagnosed as a sticky freehub, so I bought a new one and went off to learn how to replace it. It took a while but I've done it. I think my bearing adjustment is ok; if the QR skewer isn't done up pretty tight there's a little play. Everything seems smooth enough with the bike upside down and works as I'd expect, except that if I backpedal the wheel moves backwards a bit, to the point that it can pick up some speed if I keep at it. I can turn the pedals fine while holding the wheel still and it's also freewheeling properly, so it's not a problem in itself, but I'm concerned that it could indicate something that needs dealing with.
 
Sounds perfectly normal to me - I assume it only takes a little force holding the wheel for the freehub to start freehubbing?
 

accountantpete

Legendary Member
It's the pawls

d1dd_ringle_pawl.jpg


When you pedal forwards the pawls stick out (like above) and engage with the rachet in the hub. However when you turn the pedals backwards they fold down into cavities you see. As they are on springs there is a certain amount of friction between the pawls and the hub and this friction drives the wheel round.

Should be ok as it is.
 
OP
Wednesday

Wednesday

Active Member
Location
Brighton
Ok I'm reassured, thanks a lot. I've had my bike and tools in my bedroom all weekend and I'm really happy to put it all away!
 

Davidc

Guru
Location
Somerset UK
My experience - always like that with new freehub/ freewheel. Usually the effect becomes negligible after a while.

The force needed to turn a wheel with the bike upside down is very small and not enough to make a difference you'd notice to efficiency.
 
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