So after successfully going cheapskate 12 spd on the bouncer I’m doing the same on the hard tail. Think I may have ballsed up.
Fitted Sunrace 11-50 cassette (Shimano type) but when qr is tightened the freewheel doesn’t spin.
Just realised It’s an old hope pro 2 and not an evo.....have I crossed the old tech new tech divide!?
Shouldn't have no unless the sunrace cassette needs a road freehub (doubtful). MTB 9/10/11/12 on a Shimano freeuub should be the same width. The larger cogs are dished towards the spokes.
Have you had the freehub off (perhaps accidentally when removing the old cassette). If so did you out the spare back between hub shell and freehub?
Wait - there's a Sunrace 12sp that fits on an 11sp MTB hub? Does it work with Shimano M8100?
Yes an it’s only £80-90 so a cost effective option. When it works! Not had free hub off so no spaces missing.
I though people may say old pro 2 limit was 11spd with only the evo able to do 12spd?
@molgrips A SRAM SX/NX Eagle will fit on there too. As it was mentioned previously 8-9-10spd, and MTB 11-12spd cassettes fit on the same HG freehub. You only need a wider freehub for road 11spd stuff.
There are three freehub designs out there for MTB. Traditional 8/9/10/11sp; xD which allows 12sp for SRAM, and microspline which is for Shimano 12sp.
xD freehubs for Hope are only available for Pro 4, which is why some might say you need Pro 4 for 12sp. That was traditionally thenl case. However if this Sunrace one fits on an 8-11sp freehub then it fits on one and can be used on any 8-11sp hub including Pro 2. In theory.
You may of inadvertently popped out the freehub to hub seal,now its binding on compression as it's now not in it's groove properly? May just need popping back in again
xD freehubs for Hope are only available for Pro 4
I've got an XD freehub on a pro 2 Evo. Not that this helps the op.
Ok. It does sound like my more traditional ham fistedness rather than I’ve bought an incompatible part then. Will have a play. Thanks.
I’ve got an XD freehub on a pro 2 Evo. Not that this helps the op.
Ah yes I checked, apparently they are available for all hubs *except* pro2 non-evo. Which of course is what I have.
However if this Sunrace one fits on an 8-11sp freehub then it fits on one and can be used on any 8-11sp hub including Pro 2. In theory.
Manufacturers are doing the exact same thing with 12spd HG cassettes as they did with 11spd HG MTB cassettes. They offset the biggest cog and push it towards the spokes, no need for a longer freehub body. SRAM did the same thing with XD when they jumped from 11 to 12spd.
I remember that on the old SRAM site they specifically stated that the PG-1230 11-50 12spd fits on 8-9-10spd freehubs.
Manufacturers
Just Sunrace so far? I'd be keen to get 12sp without needing new wheels. And if it works with say M8100 I'd keep the gear shifters etc if I do change the wheels later to get a 10t small sprocket.
Just Sunrace so far?
And SRAM with the SX and NX Eagle cassettes (they're HG, not XD). I'm sure there are others and probably a bunch of Chinese manufacturers, i'm not that up to date with cassette releases for the HG freehub body. 🙁
Bird are spec’ing the Zero 29 12 speed with M8100 (or M7100) but with a Sunrace 11-51 cassette on HG freehub. They would only do that if they were confident it could all work nicely together.
On some wheels I've had to put a 0.5mm shim on the freehub to space Sunrace 12 speed cassette out to clear spokes. This has worked with no other issues.
Struggling with this now. It's not fouling the spokes. Ive had the cassette off and checked the pro II (non evo) freehub is mounted ok and it is. Put cassette back on, spins fine. Mount on the bike a torque up the QR even slightly and it stops the freewheel turning - v odd
Have you tried without the cassette in place to give you a view/clue whats going on.
I recently assembled my hope freehub with the seal the wrong way round and had the same symptoms as you.
bearings ok ? no bearing hub spacer missing / wrong?
tried without the cassette in place
Will try that, ta.
Bearings are fine and I've not had the freehub apart so can't see that a spacer is missing. It's spinning and locking perfectly just until some torque on the QR is applied
@molgrips you can buy the bits (new axle, bearings and a pro2 evo freehub) to convert a Pro2 to a Pro2 evo. Thats what i did, although thats because i was snapping the axle rather than wanting to run 12spd.
I wish I'd known that when I had a spare set of Hope Pro 2 wheels sitting around.
Its quite pricey to do that upgrade.
@OP when assembled with the wheel in the bike and QR done up is there;
a) a gap between the cassette and spokes
b) a gap between lock ring and frame?
You haven't inadvertently fitted a spacer meant for road compatible freehubs behind the cassette making it sit too far outboard? Not sure if the cassette comes with one of these in the box or not.
Check you have the spacer between the hub bearing and the freehub bearing.
0.5mm spacer on the back of the cassette?
It might not be a spoke clash, it could be the lock ring thread bottoming out on the FH bearing?
Spacing the Cassette half a mm out can remove the interference, or you can try and find a shallower lock ring.
Try taking the cassette off and winding the lock ring into the thread on it's own to see if it's possible to recreate the issue that way...
Just Sunrace so far?
And SRAM with the SX and NX Eagle cassettes (they’re HG, not XD). I’m sure there are others and probably a bunch of Chinese manufacturers, i’m not that up to date with cassette releases for the HG freehub body. 🙁
ZTTO do some at a sensible weight too
Are your spokes really loose? This can make the bend at the end protrude, especially if one is loose and the one it runs over tight. I had problems with spoke/brake caliper interface under braking because of this. Larger rotor sorted it mind.
Larger rotor sorted it mind
Wouldn't tightening the spokes have been the better/safer solution?
Wouldn’t tightening the spokes have been the better/safer solution?
I obviously did that first, but a lesser noise persisted. Suspect it was the rotor itself after that tbh but anyway point stands re spoke tension 🙂
So bit of a delay but just pulled things apart. Without the cassette I was getting the same symptoms. So pulled off freehub and as to be expected (as I hadn't taken it off before all the spacers are there correctly. But the outer freehub bearing is seized - as this is what the end cap pulls against when QR is torqued up it must be this, so I've ordered a bearing....just weird that I wasn't getting these symptoms before. Thank for solution suggestions.
Glad you've sorted it- I think that outer freehub one goes bad the most(most vulnerable),I had two within a week of each other disintegrate last winter-on different bikes mind .