Questions tagged [hub]

Concerning the parts and mechanism of bike gearing, both internal and external. Multi-speed, single-speed, fixed and freewheel.

Filter by
Sorted by
Tagged with
7 votes
1 answer
554 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. ...
WornChain's user avatar
  • 1,283
5 votes
2 answers
676 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 ...
Joe Hearsey's user avatar
6 votes
2 answers
80 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-...
Konstantin Shemyak's user avatar
4 votes
1 answer
174 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 ...
Laoshi's user avatar
  • 739
4 votes
1 answer
198 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 ...
Laoshi's user avatar
  • 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 ...
hansenC's user avatar
  • 81
3 votes
1 answer
76 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 ...
TheAlpCyclist's user avatar
3 votes
1 answer
827 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 ...
HTTP 410's user avatar
  • 203
0 votes
1 answer
204 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 ...
Art Gertner's user avatar
  • 2,496
0 votes
0 answers
65 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.
Cascaderich's user avatar
2 votes
1 answer
119 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 ...
Toniq's user avatar
  • 121
1 vote
0 answers
177 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: ...
Mark Aroni's user avatar
4 votes
1 answer
301 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 ...
zwep's user avatar
  • 143
1 vote
1 answer
63 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 ...
Mike's user avatar
  • 113
1 vote
1 answer
195 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 ...
Daniel's user avatar
  • 11
3 votes
1 answer
1k 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 ...
Ecir Hana's user avatar
  • 251
4 votes
2 answers
652 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 ...
Ecir Hana's user avatar
  • 251
3 votes
0 answers
85 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 ...
Ruben Miguel Silva's user avatar
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?
hub's user avatar
  • 1
0 votes
1 answer
129 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 ...
Pierre Labrie's user avatar
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. ...
Robert's user avatar
  • 2,051
0 votes
1 answer
297 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 ...
Pete's user avatar
  • 169
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 ...
Federico's user avatar
  • 212
3 votes
1 answer
72 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, ...
Cormac's user avatar
  • 41
2 votes
1 answer
68 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 ...
Євген Волощенко's user avatar
1 vote
0 answers
191 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 ...
Rasped's user avatar
  • 11
2 votes
2 answers
295 views

15mm hub on 12mm fork

I need to get a 15mm hub without end caps to fit a 12mm fork whose dropouts look like this (note that the black part has a lip): When my SON dynamo's bearings went out on a cycling tour here in ...
Laoshi's user avatar
  • 739
2 votes
1 answer
116 views

Weird behaviour of rear hub thru axle

recently my rear wheel started wobbling so I wanted to check its rear hub, bearing and axle. I have a Shimano HB-RS470 hub which is a thru axle hub, and it look exactlly like the one in the picture ...
Wojtek W's user avatar
3 votes
4 answers
2k views

12×142 wheels in 10×135 frame?

let me first say that I don't have a lot of experience on this topic so my questions will basically be two-fold: First ask if my observations and assumptions about the gear I have is correct and then ...
tor's user avatar
  • 31
4 votes
1 answer
885 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 ...
Art Gertner's user avatar
  • 2,496
3 votes
1 answer
120 views

Accomodating new wheel on old bicycle

I have a bicycle from the 1980s. Steel front fork. I am replacing the 27 1/4 wheels with 700cc. The new front wheel hub is 96mm wide between outer face of the bearing housings. The front fork has an ...
caloundra's user avatar
0 votes
2 answers
235 views

Wheel hub adjustment

My rear wheel was wobbly so I tightened the hub bearing which removed the play but caused the wheel to stop rotating freely. Stupid question I suppose, but is the adjustment just a matter of trial ...
Keith Bruford Bennett's user avatar
2 votes
1 answer
83 views

Rear 146cm hub axle (quick release) for a frame with 130mm Over Locknut dimension?

I have rear wheel (freewheel) that I can reuse for an older bicycle (130mm between dropouts) . As the source bicycle frame has more width than necessary for this hub, there are metallic washers that I ...
Daniel Perez's user avatar
6 votes
4 answers
306 views

New wheels: WTB KOM Tough with 32 spokes sufficient?

I'm having a set of new wheels get built and I am opting for WTB KOM Tough's 29 inch rims with 32 spokes. The inner width will be 25mm. I'll be using this bicycle for touring/bikepacking/commuting - ...
PristineAsp's user avatar
3 votes
1 answer
98 views

Shimano WH-RS80 Hub measurments

Where I can locate the measurements for a Shimano FH-RS80 hub? They were used on the early C20-30 wheels from Shimano, usually Ultegra-labeled with Dura Ace wheels, and some were off road Deore. The ...
SAM's user avatar
  • 31
3 votes
1 answer
1k views

11 speed MTB cassette on 11 speed road hub (once again!)

Before I start: I know a similar question has been already answered here, but this time it comes with a twist. So here I go: My setup: 11 speed road hub - stock on on my DTs 11 speed MTB cassette - ...
DerMihai's user avatar
0 votes
1 answer
152 views

What size rear hub will fit a Trek FX1?

I have a Trek FX1 and the rear hub size 135x5mm. I want to change the hub to 135x10mm; is that going to be a problem? Also, my bike is v-brake system. If the hub I want to fit has a disc brake mount, ...
Emadness's user avatar
7 votes
1 answer
235 views

Schwinn Collegiate 26" Front Wheel Cone Lock Nuts?

I'm fixing an old Schwinn Collegiate, and the front hub may or may not have been worked on before. I'm finding no cone locknuts. On one side, there is a tabbed washer. 2 ear tabs hold the cone on 2 ...
Bruce Armenante's user avatar
2 votes
1 answer
378 views

What is the minimum end-cap diameter that a 12 mm fork should accommodate?

I have a fork with a 12 mm axle. As it happens, the flat part inside the dropout that buts up against the hub end-cap is large enough to accommodate a hub designed for a 15 mm axle (using a reducing ...
Will Vousden's user avatar
  • 3,991
4 votes
1 answer
251 views

Are my hubs holes normal?

Are this holes normal? They are not slotted.
user66450's user avatar
6 votes
2 answers
373 views

Tuning tightness on XT rear hub

So, background... I just got done replacing the freehub body on my Deore XT FH-M8000 rear hub. I did this because the hub was "grabbing" when it should have been coasting such that the hub ...
Andrew's user avatar
  • 918
3 votes
3 answers
988 views

Replacement Rear Wheel for Islabikes CNOC 16 (O.L.D. 110 mm)

I own an Islabikes CNOC 16. The CNOC 16 need a new rear wheel; the CNOC 16's rear wheel (16 x 1.35 / 34-305 / 14t freewheel / M30 thread) rim and spokes are damaged after I partially backed over tire ...
Nick's user avatar
  • 33
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 ...
SamA's user avatar
  • 2,726
0 votes
0 answers
84 views

20 inch wheel HOLLOW HUB

I have a 20 inch wheel with 28 spokes. The hub has no bearings but a slot in it to accept a pin in axle. As the axle turns, pin keeps wheel from slipping on axle. Who made it, no one knows. I have ...
Ron's user avatar
  • 1
2 votes
2 answers
141 views

Is it normal for a front hub to have 9 1/4" balls similar to the rear hub?

My front hub Joytech D341RCC have 9 1/4" balls, same as my rear Joytech hub. But they say that front hubs have 10 3/16" balls.
Trump Pence's user avatar
0 votes
1 answer
47 views

convert 2015 Trek fx 7.4 from shimano 3x 9speed to sram rival 1

My rear hub is a Shimano rm30 alloy hub. I want to put a Sram Rival 1 drivetrain 42t .1x 11speed with a srm pg1130 11-36 cassete. what do I replace the Shimano hub with? Does the whole wheel need ...
harry bostrom's user avatar
7 votes
3 answers
1k views

What stops the axle from rotating against the inner part of the ball bearings in through-axle systems?

With traditional Quick Releases, the fork or frame attaches firmly through pressure (applied by the QR) to the axle. The axle becomes effectively part of the frame or fork. With the (more modern) ...
Sam7919's user avatar
  • 9,092
10 votes
6 answers
4k 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 ...
ChrisW's user avatar
  • 12k
1 vote
3 answers
501 views

Cracked hub seal ring—will it be a problem?

I just bought a mid-quality used wheelset for an excellent price, which came with the caveat that one of the seal rings on the front hub is cracked (see following images for context). The wheels are ...
MaplePanda's user avatar
  • 15.5k
5 votes
2 answers
555 views

Does a z-shaped cone wrench exist?

This is a massive cone, and I was under the mistaken belief that if it remains perfectly smooth, I can either overhaul it yearly, or grind it with a Dremel and repack the grease every two years, and ...
Sam7919's user avatar
  • 9,092

1
2 3 4 5
10