Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

The tag has no usage guidance.

2
votes
1answer
48 views

Adjust Nuvinci nfinity gears

After the latest service, my manual Nuvinci nfinity is set to higher gear than before and I want it lowered again. Surfing the web I find nothing like "turn this knob to adjust gear". The closest I ...
5
votes
2answers
1k views

What does this barrel adjuster do on the rear derailleur (SRAM Apex 1)?

On this SRAM Apex 1 derailleur, what does this barrel adjuster do? What happens if I turn it clockwise/anti-clockwise?
1
vote
2answers
130 views

Chain rattling in lowest gear despite adjustment

I have bought an 80ies (?) Vicini vintage road bike that I've mostly used on flat terrain so that I haven't used the smallest gear until recently. I found out that the chain rattles against the front ...
0
votes
0answers
53 views

Gears shifting when bouncing on mtb

I got my motobecane partially disassembled and I did all tuning and alignment myself. Being a new joiner it makes me feel I am missing some point. The issue is when my bike is on the stand the ...
1
vote
3answers
112 views

Rear derailleur moves to much for each click - tried everything

Two years ago I build a bike (flat bar) with SRAM 1x11. Around a month ago the rear-derailleur broke (guide pulley broke). I bought a new rear derailleur: Shimano 105 RD-5800-GS. After installation ...
2
votes
1answer
84 views

Campagnolo Athena 11s front-derailer alignment

I am having a world of trouble trying to get my FD aligned properly and shifting properly from small to large cog and back again, especially when riding up hills. When on the flat, they change fine, ...
1
vote
1answer
48 views

Gear problems on my bike

When I change the gear from 3 to 2 the gear shifter does not properly change the gear. It will just move to gear 1 then it pops off. I put the chain back but it still had the same problem.. I don't ...
4
votes
3answers
331 views

What is the key factor for stable handlebar?

Or in other words -- how to make proper adjustment so the handlebar will be stable on flat road so I could ride with my hands off it. I don't actual ride in such position I simply want stability. ...
3
votes
2answers
92 views

Which cleats provide more adjustment freedom?

Currently I have MTB shoes and I am surprised how little freedom they provide for left-right adjustment (shift). So I wonder which cleats -- MTB vs road -- provide more adjustment freedom? Assuming ...
0
votes
1answer
414 views

How do I adjust the Marzocchi Dirt Jumper 3 (mtb fork)?

The fork has no labels on the adjusters. I don't know what's what. I checked their website for manuals, and they always mention removable top caps. But as you can see in the photo that these are not ...
0
votes
2answers
48 views

Chain not sliding into casette perfectly

I have a RD 7900 derailleur and a standard 105 28t casette. After replacing my wheelset I observed after I put my bike on the workstand that the chain is not sliding in perfectly into the casette ...
2
votes
3answers
517 views

Why does my rear derailleur's indexing work for either the high or the low gears, but not both?

I am adjusting my rear derailleur indexing. It seems impossible to find the correct tightness. When I tighten the tension with the tension barrel adjuster, I have one of two problems: either it is too ...
0
votes
1answer
201 views

Rear gears not shifting between 6 and 7

I've just replaced the rear derailleur on my kids bike. I've fitted the biked with a Shimano Altus. The issue I am seeing is the shifting between gears 6 and 7. When I move from 7 to 6 the chain ...
2
votes
2answers
246 views

Will 0.5mm gap/play in a seatpost shim work without cracking the seatpost tube?

I have a Day 6 ebike; it's a large frame--the Samson model. The seat post (the frame member) is 31.4325mm or 1.2375 inches (I.D.) at the clamp collar. The seatpost (the seat support post) is likewise ...
0
votes
0answers
69 views

Adjusting a Brookes C15

friends, I've got a Brookes C15 that I picked up for a bit cheaper than retail, and I'm keen to try it. By my first adjustment--KOPS, level saddle, etc.--I've got something very uncomfortable in my ...
2
votes
1answer
236 views

How can I tilt up a stem of my bike's handlebar which is held by two bolts?

I bought a second hand hybrid bike and would like to adjust the stem of the handlebars such that I can ride it in a more upright position. The following photo shows a side view of the stem with an ...
1
vote
0answers
128 views

Need some help with suspension on Mongoose Salvo Comp FS

I'm 14 years old and have been riding for a year on a Mongoose Salvo Comp full-suspension that was bought second hand and in perfect condition. The bike is great but after riding a friend's bike, I ...
1
vote
1answer
76 views

Adjust rear derailleur - strange behavior

So I'm trying to adjust and fine tune the bicycle, but there's something that quite doesn't match up anything I've seen or read online about rear derailleur adjustment, most manuals go this way. ...
2
votes
1answer
124 views

What are the potential causes of my fingers going numb when riding?

My fingers get numb quite quickly when riding. I'm a novice and not sure to what this can be due. I've tried gloves but they didn't help. I've tried added different handles to be able to switch ...
1
vote
2answers
137 views

Replacing Mechanical Disk Brake cables

I am having problems with replacing brake cables on rear wheel. The bicycle has mechanical disks. I removed old cable successfully and I've put the new one in. The thing is that I feel like it's not ...
5
votes
3answers
2k views

Saddle height for toddler's balance bike

My toddler (two and a half years old) has just started scooting around on her balance bike. I'd like to ensure that the saddle is at the best height for her to learn to balance. I know the rules of ...
1
vote
2answers
148 views

Diagnosing buzzing sound when riding over uneven terrain

I've got an old steel-frame road bike which has started making a very unpleasant and worrying buzzing sound when riding over rough/uneven terrain (e.g. roads with lots of fissures/cracks, cobblestones ...
3
votes
1answer
237 views

Preventing downtube cable stops from sliding out of place

I've got a vintage road bike with no braze-ons for shift cables: Instead, it's got a cable stop holding the cables against the downtube and parallel to the chainstays. Unfortunately, it seems to slide ...
1
vote
1answer
117 views

Rear wheel drop-out adjustment (1-speed)

I've got round to my Twenty/Shopper and besides replacing the tyre also went ahead and got a new KMC chain. Of course, the links were somewhat shorter, and so I couldn't cut it just right without ...
3
votes
1answer
668 views

Barrel Adjuster hard to use and loose

This is a Shimano Tiagra ST-4500 shifter. More explicitly the problem is with the Tiagra Double controlling the front derailleur. 1) The barrel adjuster is hard to use because all parts around it ...
1
vote
3answers
964 views

Can I intentionally overfill my hydraulic brakes to adjust contact point?

I have a bike with SRAM Apex hydraulic disc brakes. They do not have contact point adjustment, but I want the lever to firm up earlier in its travel. Can I just overfill my brakes with fluid to adjust ...
2
votes
1answer
78 views

Saddle adjustment

I was given a used specialized rock hopper last year but the seat angle is too high in the front. I've loosened the hex sockets beneath the saddle to adjust the angle but it always screws back in the ...
5
votes
1answer
2k views

Are there any adjustments for hydraulic brakes?

I prefer stiff, touchy, on/off, brakes. When I was using mechanical disc brakes, I always adjusted them so that the pads were almost touching the rotor. This provided the short lever travel I was ...
4
votes
1answer
1k views

Correct setup of Huret rear derailleur

I've got (what I think is) a Huret Eco rear derailleur which seems to somehow get "stuck" in an "open" position when shifting on the front chainrings, i.e. the return spring somehow stops "working" ...
1
vote
1answer
109 views

Front derailleur takes 6 clicks to shift gears, instead of 3 [duplicate]

I've just stripped all cables and chain from a badly kept bicycle and replaced them. I've correctly adjusted the rear derailleur and it works great. However, front derailleur which only has 3 gears ...
6
votes
5answers
592 views

Simple brake test, pulling the brakes and pushing the bike by hand

After installing and adjusting, there is this test, where you pull the front brake and try to push the bike forward, it should offer enough resistance to lift the rear wheel. Then you test the rear ...
2
votes
2answers
2k views

Can't adjust headset correctly

Summary - I'm using an FSA Orbit MX threadless/integrated headset in a brand new steel frame. My problem is that I cannot seem to adjust the headset to the right tightness - either it is too tight and ...
5
votes
1answer
149 views

Can you have too many in line barrel adjusters?

Just replacing the shifters on my bike. It had STI shifters and I'm putting thumb shifters on, the shifters have built in barrel adjusters. The bike also came with barrel adjusters on the down tube, ...
0
votes
3answers
372 views

Chain going “slack” on the 7th gear under load on a new mountain bike?

I recently bought a new Mountain Bike which works pretty well, aside from the fact that I have a problem with it which creates a pretty damn large safety hazard, not to mention creates a massive ...
2
votes
1answer
1k views

Shimano Nexus 8 Hub Alignment Mark No Longer Visible

I've got a Shimano Nexus 8 IGH, and was previously able to adjust it properly by aligning the two yellow tick marks in the 'window' as described here. However, I then removed and replaced the rear ...
5
votes
4answers
2k views

Would Lowering my Handlebars Help my Performance?

I ride now with pretty decent comfort, I have no real back/neck/shoulder pain. As I ride now I feel decent, but I feel as though I might be in too much of an upright position on the bike to get the ...
10
votes
2answers
2k views

Brooks saddle angle dilemma

I recently got a Brooks B17 and am having trouble finding a comfortable angle. If it's level, I tend to slide forward. If it's angled up to the point where I don't tend to slide forward, I feel ...
1
vote
1answer
100 views

Pads in contact with disk when idle on my SLX L675 disk brakes

I've recently bought a Nishiki Hyper pro which features the hydraulic Shimano SLX L675 brake system. What I've found is that the pads on the back wheel breaks appear to be in constant light contact ...
0
votes
2answers
227 views

How to work around a high seatpost?

So I bought this old bike but realized that its seatpost is stuck and high. When I ride I feel uncomfortable because it's slightly too high for me. Also I realized that it's really difficult to fix ...
1
vote
5answers
1k views

How to remove a stuck seatpost?

I bought an old bike. However there is one problem with it. The seatpost is stuck and I can't take it up or down ... and it's too high for me that my back hurts. It seems that the old user made it ...
3
votes
2answers
2k views

How to adjust cable length on integrated brake/shift levers, when there is no barrel adjuster?

I feel bad asking this question because I've been doing bicycle maintenance for over 20 years and this seems like a noob question. I was unable to find a Shimano manual to answer this question. I ...
1
vote
2answers
403 views

Does there exist optimal damping setting for all terrains?

When ζ = 1, there is a double root γ (defined above), which is real. The system is said to be critically damped. A critically damped system converges to zero as fast as possible without oscillating (...
0
votes
1answer
127 views

Front Derailleur Tuning Question

I've installed new front derailleur (Shimano Tiagra) on my bike and I spent embarrassingly lots of time trying to adjust it. Yet still I think I have a problem with it. For me it seems too tense. You ...
0
votes
2answers
243 views

Axle flex under load normal for freewheel hub?

When using a freewheel'd hub is it normal for the drive side of the axle to flex a little bit? I replaced the kickstand on my bike and the new one sits closer to the rear tire with about 2 mm ...
3
votes
3answers
4k views

Rear index shifting not staying in middle gears

I have replaced a chain (SRAM PC 830) and 7 speed freewheel (Shimano MF-HG37) on the back of my daily commuter bike about 300 miles/ 3 weeks ago with the same models. The old parts lasted me 4000 ...
5
votes
1answer
9k views

Misadjusted B-screw: symptoms?

What are the typical symptoms of incorrectly adjusted B-screw in the rear derailleur? How does it manifest itself when shifting? Obviously, if the cage pulley interferes with the cog, the problem is ...
1
vote
2answers
2k views

Slipping shift cable barrel adjusters

Currently, I have Shimano Tiagra 4600 series brifters on my bike, and the barrel adjuster on the front derailleur cable slips when the shifter/derailleur is in the smallest chainring position, when ...
3
votes
7answers
818 views

1980's bike vs New(er) Models? (Should one stay with an ancient bike?)

I have been cycling on a Centurion Pro Tour that was constructed sometimes in the 1980's - probably late 1980's, but still. It works great. It coasts downhill far faster than my hybrid, it doesn't ...
14
votes
3answers
2k views

Why do some triathlon seatposts go straight up and down instead of at an angle?

Why is it that some triathlon bikes have a seat post that adjusts straight up and down instead of the more standard axis that aims at the bottom bracket? This means that if you raise (or lower) the ...
4
votes
2answers
3k views

Handlebar stem : height vs length

my handlebar stem http://www.bikepartsplace.com/images/med/31231097.jpg I want to decrease the reach of my handlebars. Does it matter whether I increase the height or get a stem with a smaller length(...