Questions tagged [hub]
Concerning the parts and mechanism of bike gearing, both internal and external. Multi-speed, single-speed, fixed and freewheel.
470
questions
5
votes
1
answer
762
views
Is a new Tourney rear hub better than a 15 year old Deore hub?
I have an old MTB with Deore M530 rear hub. I found out its axle has a slight bend thanks to the help of the members here. There is also wear on one of the cones. I am going to order an axle set (axle ...
- 20.2k
1
vote
1
answer
31
views
Bearing size for front hub
This is my first time posting, so apologies if I did something incorrectly.
I recently bought a used Marin Bobcat Trail 3 mountain bike and noticed the front hub was really tight. After removing the ...
- 10.2k
6
votes
0
answers
45
views
What is forward drag on a coaster brake
I have a single-gear coaster brake bicycle that needed fixing. I would have to pedal real hard to get it to go and backpedal a block in advance for bike to stop. Very spongy brakes. Well I took brake ...
- 1,123
5
votes
2
answers
79
views
How to adjust rear axle width?
I fixed a puncture on this kid's bike (not mine) but when I went to put the wheel back in I noticed the axle is narrower than the dropouts & the dropout has been significantly bent in before to ...
- 124k
11
votes
3
answers
40k
views
What's the difference between Shimano HG and SRAM XD free hubs?
I know that the Shimano free hub is pretty common. I think it's called HyperGlide (HG). But now I heard that SRAM has a free hub called XD. What is this? What is the difference? When do I need it? Can ...
- 6,142
0
votes
1
answer
291
views
15mm thru-axle hub on 12mm axle: sleeve adapter vs endcaps
Background:
I have a frameset with 12mm thru-axles front and rear (non-boost). I think bikes like that are now very common in road/gravel realm. I am building myself a second pair of wheels at the ...
- 1
3
votes
2
answers
2k
views
Should I force an 130 mm hub into my old vintage alu frame
I have a classic vitus 979 aluminium road frame where the rear dropout width is 126 mm. Most of the things I hear is that you should not use force on an alu frame and try to fit in an 130 mm hub in ...
- 6,142
6
votes
1
answer
2k
views
Hyperglide vs HG10/HG11/HG12
What is the difference between "Hyperglide" cassette and HG10/HG11/HG12 cassette? I thought the later are also of "hyperglide" kind.
Is the freehub body for the former cassettes ...
- 85.1k
2
votes
1
answer
74
views
Can you ID this Shimano freehub body?
My LBS can't figure it out and my googling brought up nothing.
The hub itself is Shimano model FH-T3000
It's from a 3yr old, 8spd, $100 wheel.
- 125
4
votes
2
answers
2k
views
Can a hub casing be warped/bent?
For a couple weeks now, my commuter bike has been creaking ominously while I pedal, and just the other day, the rear wheel began to wobble up to a full centimeter to either side (rubbing the frame) ...
7
votes
1
answer
571
views
When replacing balls in Shimano cup and cone bearings, is part number relevant or is size the only thing that matters?
Does the shimano part number matter when replacing the balls in cup/cone hubs? The exact part number is unavailable, and the available shimano bearing of right size does not list my hub as compatible. ...
- 85.1k
6
votes
2
answers
474
views
Questions about Boost frames and cranksets
I made the plunge and have purchased a new 2016 Stumpjumper FSR carbon frame. The post on eBay--from the Specialized Outlet Store, no less--was incorrect when it stated the frame had 142mm rear ...
- 10.2k
4
votes
1
answer
212
views
CNC'ing Strong Hub Shell (Kindernay Swap Cage)
The Kindernay Swap Cage is a removeable hub shell that is a bit delicate for loaded touring. The HD (Heavy Duty) Swap Cage never made it to market.
I'd like to make one that's near indestructable. It ...
3
votes
3
answers
1k
views
How to properly tighten "internal" nut on the rear axis?
This is basically a follow-up of my previous question.
I am talking about the nut between the frame and the cassette (see attached image). In other words not the "external nut" which fixes ...
- 124k
5
votes
2
answers
5k
views
What's the cone wrench size?
What's the cone spanner size for cone nut on Shimano WH-R550 Front wheel ?
Is it 17mm or 18mm ?
I tried with 16, it seems, need more, 1 or 2mm bigger.
Thanks
- 549
5
votes
2
answers
689
views
I need help fixing my axle
Here is my bike:
https://www.trekbikes.com/gb/en_GB/bikes/hybrid-bikes/fitness-bikes/fx/fx-1-disc/p/27987/
What appears to have happened is that the axle through my hub has sheared off due to some ...
- 5,188
4
votes
1
answer
770
views
What parameters are important when replacing a rear hub?
My rear hub is damaged. I have not yet inspected the source of the damage, but the wheel is moving sideways when rotating (a LOT), plus I rode it like this for about 35km. Therefore, I find it ...
- 1
2
votes
1
answer
337
views
What ball bearings for the hub of the front and rear hubs of DT Swiss dt r24 db Spline 2016?
Removed the end caps, but can't read the size w/o removing the bearings since the red side doesn't have any text on it.
CommunityBot
- 1
6
votes
2
answers
82
views
Analog of "pitch circle" for straight-pull hubs?
If I want to build a wheel with my selected rim and hub, I can calculate the spoke length given the rim ERD and a few hub dimensions, most important of them being pitch circle diameter.
For a straight-...
- 1,635
4
votes
1
answer
184
views
Keep incorrect lacing (spoke heads in/out) or reseat spokes on hub flange?
Though likely not unanimously agreed on, it seems trailing spokes should be heads out. After breaking a hub flange where the trailing heads were heads in, I'm a little spooked seeing my front hub's ...
- 739
8
votes
2
answers
2k
views
Catastrophic hub failure, can the freewheel and rim be saved?
I am not experienced working on wheel hubs/cassettes or anything related to them. I am also not great at English, so please excuse any dumb questions I might ask.
The obvious problem is that my rear ...
- 10.2k
4
votes
1
answer
1k
views
Safely removing DT swiss bearings to re-use them
I have a DT Swiss 350 rear hub and the axle does not rotate freely. Rotation is smooth (not rough) but with noticeable amount of resistance. I have to pinch the axle hard with my fingers to even ...
- 1,187
13
votes
4
answers
5k
views
What's the verdict on hub-less circle bicycle wheels? Sturdy and "maintenance-free"?
You've probably seen these weird hub-less bicycles, the Reevo and the Cyclotron; while they "look cool" I wonder if anyone has long term maintenance experience on these. Considering that ...
- 5,188
3
votes
3
answers
2k
views
What's this Knocking from rear hub when coasting at high speed
I recently started to notice a rhythmic clicking sound coming from the rear of the bike, when coasting, several weeks ago. I ride an average of about 10 miles per day. This sound was intermittent, and ...
3
votes
1
answer
83
views
How to disassemble rear wheel hub with no lock nut?
Please see pictures. My rear wheel has a Deda Elementi hub which has a Thru axle. I have removed my 11-speed cassette and disc rotor. There is no lock nut on the non-drive side. There only appears to ...
3
votes
1
answer
883
views
Freehub body fell off. Now it's back on, but big freewheel drag
Update: I managed to slide the freehub + cassette back onto the hub - took a bit of persuasion, but easy once I had the technique. But the freehub now has a significant drag - when I rotate the pedals ...
- 203
3
votes
5
answers
17k
views
What tool do I need to remove this Joytech freehub?
I have tried 10mm allen: too small, spins freely, with very little grip.
Hub brand: Joytech
On the outer side it has 9 ball bearings.
Video showing right/drive side:
...
- 21
0
votes
0
answers
74
views
New enviolo hub shift is locked
My shift mechanism is locked on a new hub. Will not shift at all. Still in max overdrive. Don't want to force it.
- 124k
2
votes
1
answer
150
views
Hub FTF and Offset
I have a fron disk hub which has FTF 62mm, offset 7.7 (Novatec d791sb)
According to this:
Wl = (F.T.F/2 + Offset) = 38.7mm
Wr = (F.T.F/2 - Offset) = 23.3mm
But when I look at the picture, it seems ...
- 3,981
4
votes
1
answer
308
views
Tightening drive side bolt for Mavic Cosmic Elite rear wheel
I have a question about this Mavic Cosmic rear wheel. I wanted to remove some play from it, so I took the rear wheel apart for that purpose. Now, when I'm putting it back together, I notice that I'm ...
- 143
1
vote
0
answers
243
views
Which tool is required to remove an 8 notch freewheel from a single-speed flip-flop hub?
I have a single speed freewheel on a flip-flop hub that I would like to remove to service the hub. It has 8 notches, which tool do I need to remove the freewheel?
Here is a picture of it on the bike:
...
- 111
1
vote
1
answer
72
views
Rear hub boot/seal rotates?
I've had my bike since new in 1993. I rebuild the hub bearings every so many years. I recently rebuilt the rear after letting it go for too many years and had a nagging question:
(Reference the ...
- 85.1k
1
vote
1
answer
233
views
What do I need to adapt a Hope Pro 4 to a Boost 141 frame?
I have a 2021 Trek Roscoe 7 and I’m looking to buy a rear Hope Pro 4 hub. My Trek comes stock with a Formula DC-2241 rear hub, alloy, 6 bolt, Shimano 8/9/10 freehub, Boost141, 5mm QR. The rims are ...
- 2,360
4
votes
2
answers
804
views
Hub spacer behind 105 cassette
While removing Shimano 105 cassette, I noticed a spacer sitting on the hub between the largest sprocket and the place where spokes attach to the hub (not sure how is it called).
I checked the 105 ...
- 4,431
10
votes
6
answers
5k
views
Can I replace just the internals of a wheel's hub instead of the whole wheel?
After a while (e.g. 10 years or 40,000 km) the bearings in the hub of a wheel become worn-out -- this is with disk-brakes i.e. where the wheel's rim isn't worn-out.
The bike shop told me that it's not ...
3
votes
5
answers
40k
views
Why does my chain slip off the chainring when cruising or back pedalling?
My bike is a little more then a year old (although I do put a lot of miles on it, about 12 miles a day), this problem seems to have started about a week ago. It's a 7 speed Avilon Next (a cheap brand ...
3
votes
0
answers
87
views
Scott 965 hub Problem
Good afternoon, I recently bought a Scott 965, I chose this bike for the beauty of it and the equipment it came with, I wanted to change to a bike with sealed bearings and leave the bearings Sphere ...
4
votes
2
answers
2k
views
Shimano MTB hub with pitting cones
When I disassembled my Mountain bike's front hub (Shimano HB-MT400-B) so that I could clean and re-grease the bearings, I found that the cone on one side was developing pits. There are about 4 small ...
- 1
49
votes
11
answers
41k
views
What's the efficiency of hub gears compared to derailleurs?
What's the efficiency of hub gears compared to derailleurs? I know that hub gears are not as efficient. Apart from being heavier, how much will I lose in performance if I use hub gears?
- 14.1k
0
votes
1
answer
24
views
Trek shift three rear 8 speed deraileur, in smallest cog the drive train seems to slip and re-engage in under a quarter turn?
Recently I have a new shifter on handlebar, new cable, had the chain replaced and a new cassette and a new rear deraileur.
Wondering a about the Hub in the wheel?
- 10.2k
0
votes
1
answer
138
views
Cone and lock nut adjustment on the drive side is impossible on my back wheel
The right side cone is covered with a cup style spacer and the cone wrench cannot be used to fully tighten the lock nut. I think this metal cup serves as some kind of seal. How can I retighten cone ...
8
votes
4
answers
3k
views
Cause of broken spokes (pictures included)
I never had this problem before. Two spokes on the drive side of my road bike's rear wheel broke at the J bend, and I'm trying to identify the cause. The wheel has 32 spokes total, made of steel, ...
- 2,051
13
votes
2
answers
3k
views
Rear wheels are dished. Why not "dish" the frame instead?
Most rear wheels are dished to make room for the cassette. They have the drive side spokes comming into the hub more perpendicularly, which weakens the wheel against lateral forces in that direction. ...
- 124k
2
votes
3
answers
4k
views
How to determine correct bearing size for Quando hub?
I'm servicing the Quando hubs on my single speed/fixie bike. This hub uses a cup and cone type bearing assembly. When I removed the cones I noticed that one of them is chewed up badly at the end. I ...
- 11
0
votes
1
answer
368
views
135mm Hub in 141mm Boost QR
I may be barking up the wrong tree, but I have the following project in mind.
I'm looking to buy a bike (Giant Fathom E+EX) that is listed as having 141 QR Boost drop-outs in the rear. I want to ...
- 20.2k
4
votes
1
answer
191
views
What part of the hub is referenced when speaking of hub length?
In the attached image, you can see a measure of 32 and 36 mm being mentioned for the length of a bike hub. What are these measurements? I have searched and found that axle, flange or even spoke holes ...
- 22k
6
votes
3
answers
6k
views
Can I put a 8 speed bike on a Elite Suito 11 speed direct drive turbo trainer
I have recently ordered an Elite Suito Direct Drive FE-C turbo trainer. The main use is for indoor, winter cross-training for my young son who's a keen athlete (we don't want to send him out in the ...
3
votes
1
answer
77
views
Help needed: identify hubs TRW 9000
I bought this old randoneering frame
It came with TRW 9000 hubs. I've done lots of web searches but couldn't find anything.
Has anyone out there seen them before or know anything about them?
Cheers,
...
- 2,051
2
votes
1
answer
73
views
What if use Effigear gear box and Alfine 11 gear hub together?
What if we use two types of planetary gear hubs together? Like Effigear and Shimano Alfine 11. First on the pedals and second on the back wheel?
Will it increase number of transmissions? Or increase ...
- 2,698
1
vote
0
answers
201
views
Missing end cap
I bought a used bike, and I didn't notice the end caps were missing from the front wheel.
I don't know the model or the manufacturer of the hub, there are no markings.
It is a 12x100 thru axle fork
...
- 6,142