New freehub needed , which one ?
bing gordon
Posts: 662
I have just bought a 2nd hand Specialized 8 speed Rockhopper but the freehub paws are knackered as it slips alot. The freehub is a sealed freehub with the teeth / cog at the bottom to interlock with the bike so I can't get the paws.
I've had a quick look but there seems to be a few different models made by Shimano ones but I'm not sure which I need.
Any idea's ?
Alexrims Specialized
I've had a quick look but there seems to be a few different models made by Shimano ones but I'm not sure which I need.
Any idea's ?
Alexrims Specialized
0
Posts
Doesn't sound like a Shimano hub from your description?
There is no secret ingredient - Kung Fu Panda
London Calling on Facebook
Parktools
http://www.chainreactioncycles.com/shim ... lsrc=aw.ds
With the teeth that drop onto teeth on the bike itself but there's quite a few different model numbers
A decent used wheel may be a better bet.
ummm , that' sounds abit extreme, a new wheel for a knackered freehub ?. The bikes only about 7-8 years old so I would imagine someone will still be making a compat, freehub the problem is, I just don't know which to buy, I will email specialized and see what they say.
http://www.madison.co.uk/products/cycli ... y-8-speed/
There is no secret ingredient - Kung Fu Panda
London Calling on Facebook
Parktools
while hunting around for the best price I dropped on this video;-
https://www.youtube.com/watch?v=O_tEbQpjYiU
After I removed the Freehub Body from my bike which I now know is a FH-RM30-8speed via Specialized I thought the unit was totally sealed unlike my road bike were I can service the bearing and paws but the video seems to confirm you can actually open the freehub and get at the internals to clean and repair which I do every so often with my road bike.
I've a feeling it's the exact same problem in the video as mine , just muck holding back the paws from releasing quickly enough to engage hence the slipping and freewheel/coasting I get which gave me one hell of a bruise via the peddle winging it's way onto the back of my calf when setting off.
Can anyone confirm this and the method on how to open it ?. I don't see the point buying a new one for £20 when I can simply service this one especially when I have all the gear to do it.
There is no secret ingredient - Kung Fu Panda
London Calling on Facebook
Parktools
On Youtube somewhere there's a video of somebody making a tool by grinding down an old socket and using it to dismantle a Shimano freehub, maybe yours is the same?
But for £15 I'd just buy a new one.
Maybe when I'm retired and scraping by on a pension i'll have enough free time and motivation to open up a freehub. For now I just take them off once a year, pick out the rubber seal, and drizzle a load of motor oil in there. Give it a few spins then drain it out with a load of dirt. Repeat if required, replace the seal and reinstall the freehub. This is on 2 road bikes, one of which is ridden through the winter, and I haven't had a freehub fail on me in nearly 10 years.
Maybe they've made the cheaper ones completely non serviceable...
https://www.youtube.com/watch?v=X9gIEG1db0s
I don't have one but I have a large blot and washers I used in the past for a bearing press, I'm wonderimng it that would work ?
I have just ordered a new one but it was worth a go, nothing lost bar a few hours sussing out. Thanks for any help given.
@keefe , I did try cleaning first before having a go at taking it apart, and, these bears ? do they have caws growing out their pawls ? thanks for the grammar lesson , much appreciated eye hoe ewe Juan
As a follow up,
I tried to locate a F-RM33 8 speed but was having truoble locating one till Wollyhatshop confirmed that a FH-RM33 next model up
like this https://www.sjscycles.co.uk/hub-spares/ ... y30v98040/
is compatible with any bike fitted with a FH-RM30, the 33 is just a vamped up model.