"CLUNK!" noise coming from rear Hope Pro II hub???
It could well be the pawl springs (or even the pawls themselves). The springs can (and do) break – and rust if any moisture gets in.
This was the problem on mine – the symptoms sounded exactly the same.
They are cheap and easy to replace if this is the case – £2.88 for springs here: LinkyPosted 3 years ago
Under fairly high pedaling load, my drivetrain makes a loud (and highly disconcerting) “CLUNK” noise. I would say this typically happens 5-10 times during a 25-mile ride. Having replaced my cassette, chainrings, chain and bottom bracket, the problem still persists! This leads me to believe that the source of the noise pertains to a fault with my rear freehub (Hope Pro II circa 2008). I’m not an expert on hubs, so I was wondering whether anyone else has experienced a similar issue?
Thanks.Posted 3 years ago
Have a look at this. [video]https://www.youtube.com/watch?v=XbOEc0Jrz9A[/video] gives you an idea of how to remove freehub etc. I’d check the bearings whilst you’re there but you don’t need to change them if they’re ok.
 this one covers just the freehub;
[video]https://www.youtube.com/watch?v=J-09KxrRIbY[/video]Posted 3 years agohighlandmanMember
Be careful if you find that one (or more) of the pawl springs has snapped.Posted 3 years ago
The grease inside the freehub space will contain some of the finest shards of rigid metal you’ve ever seen. And see them you will, as they go straight through skin like a mad thing… and can be an absolute nightmare to extract later!
When these leaf springs snap, they shatter widthways into several thin strips and will lurk in the dirty grease.lornholioMember
My rear Pro 2 seems to be slipping this week under high torque (pushing up a quick climb in the wrong gear). I was guessing it was the freehub or pawls too (cassette has done 9 months, new chain 3 months ago).
Is it easy enough to do a full hub service as shown in Hope’s video without their specific tools? Any essential tools I should try to borrow (vs ones that just make it a bit easier)?Posted 3 years agoSuggseySubscriber
I had a similar age hope pro hub that started with a similar noise until the body exploded whilst pedalling uphill. Check all the spoke holes on the flange for signs of cracking on any of them. If there is return it to Hope and you should find they will replace the hub body free of charge like they did with mine.Posted 3 years ago
It’s me again. I just wanted to say that I replaced the pawl springs and the problems went away completely. Turned out to be a pretty simple procedure, which didn’t require any specialist tools. The seal slotted in easily with just my fingers.
Thanks for your help everyone!!!Posted 3 years agolornholioMember
So is it most likely to just the pawl springs or could it be the pawls themselves? Just figuring out what to order.
I’ll probably leave it until autumn though, as mine only slips when I’m trying to push up a steep section in too high a gear. I’m not going to damage the ratchet if I’m careless in the meantime and get into this situation now and again, am I?Posted 3 years ago
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