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Questions tagged [single-speed]

A single-speed bicycle is a type of bicycle with a single gear ratio. These bicycles are without derailleur gears, hub gearing or other methods for varying the gear ratio of the bicycle.

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ebike speed sensor issue

My Pure Flux One (single gear, ebike) pedal assist works/kicks in for v short time setting off but 'speed sensor' alert shows & motor/pedal assist stops within 10-30 secs. turning display off/on ...
dcal's user avatar
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5 votes
2 answers
98 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 ...
lost's user avatar
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3 answers
164 views

Chain type and chain alignment for a fixie single speed

I've got a 10-year old bike I'm trying to revive. It was a single speed that I converted to a fixie. I'm anticipating just casual riding on flat ground. It has an old-school looking Shimano SGX 46t ...
fronk's user avatar
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1 answer
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Does chain tensioner (tug nut or spring) is needed, for horizontal dropouts?

Is a chain tensioner (tug nut or spring) needed for horizontal dropouts ? I assume that in case of horizontal dropouts, chain tensioner is not needed. Nevertheless, does it provide any added value ?
Michael D's user avatar
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5 votes
2 answers
2k views

Single speed chain tensioner comparison

I would like to dicuss PROS and CONS of 2 method for chain tension for single speed. Chain tensioner with Bolt (left upper and left lower image). Chain tensioner with a kind of spring + arm + roller ...
Michael D's user avatar
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2 votes
1 answer
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How can I know / check if I can use KMC Z7 for my single speed bike instead of KMC S1

I have 2 spockets: front and rear. Front 52T, 110 BCD (Narrow wide tooth). Rear 18T,18T (34 mm/1.34''). This is all information which I have. The front sprocket should be fine with KMC Z7, since, it ...
Michael D's user avatar
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2 votes
1 answer
668 views

What are ball bearings for in coaster brakes?

I tried to fix my coaster brake with no understanding of what I was doing. Suffice to say it's a long process. I broke one of the ball bearing cages in disassembly, so I thought they were pointless ...
Ethan Miller's user avatar
5 votes
1 answer
1k views

How do you grease a coaster brake?

I needed to fix my coaster brake, but I don’t know which grease to use or how to apply it. When I hold it in my hand, the sprocket turns the hub; and when I turn it backward, the brake engages. But in ...
Ethan Miller's user avatar
3 votes
1 answer
55 views

Dia-Compe Gran Compe shot lever - is there a fix for 31.8mm bars?

I have a Dia-Compe Gran Compe shot lever and want to change the bars on my track bike for 31.8 diameter bars — is there a fix (i.e. replacement clamp band) that anyone can point me to that I can use ...
PeteMFav's user avatar
5 votes
4 answers
1k views

Are there single speed electric bikes already?

Let's see how far the trend of motorcycle-disguised-as-bicycle is at. Electric drive is penetrating most market segments. The front derailleur is dead. I believe all types of electric motors have an ...
Vorac's user avatar
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I need advice about what bike to buy for daily commuting

I have route to do daily to go to work. Could you recommend a model of bike available in France for less than 350€. My physical condition is not too bad. I am athletic. Maybe a single speed can be a ...
Mehdi's user avatar
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1 vote
2 answers
461 views

BLB Viper - Is this frame OK?

I want to start building a fixed speed bike and think about having the BLB Viper frame set. Is it a good frame to start with or would you recommend to get a different ONE, like a Leader frame or a ...
LStrike's user avatar
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1 vote
1 answer
231 views

Crankset for single-speed vs racing bicycle

What is the difference between a crankset for singlespeed bikes and one for racing bikes? If we assume that the teeth count is the same, would the SRAM S-Series be better than the SRAM Rival 1? ...
OcK's user avatar
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2 answers
8k views

How to calculate what BB spindle length I need for a mystery crankset?

I'm building up a bike frame with spare/junk components to be my beater bike for commuting. It will be a single speed, chainline on my rear wheel is 42mm. I have a crank set to use, but I'm not sure ...
Loralrose's user avatar
9 votes
4 answers
3k views

How am I able to simulate gears on my single speed?

Sometime ago, I bought a cheap bike from eBay for my daily commutes which turned out to be a single-speed bike. It works fine but I am curious as to how I am able to have a shifter that simulates gear ...
Can Sürmeli's user avatar
13 votes
8 answers
5k views

Can I convert a 1x9 speed bicycle to single speed by putting 9 identical cogs into cassette?

As the cogs in cassette seem separable, can it be converted into single speed by just putting the 9 identical cogs of the gear you like and retaining the rest of the gear mechanism as it was? Such a ...
nightrider's user avatar
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4 answers
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18 Speed Mountain Bike Single Speed Conversion

As of right now I currently have an Apollo 18 speed freewheel bike (3 Front and 6 Rear) I bought from Halfords but I have decided that I want to convert it into a single speed bike. This is because I ...
Confused's user avatar
5 votes
1 answer
538 views

Can I use fiberfix tape to reinforce this shoddy weld?

I recently built a hi-ten steel bike and I just realized that it had a large hole in one of the welds near the seat tube and the top tube. Tried taking it back to the shop that shipped me the frame ...
alwyn42's user avatar
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0 votes
1 answer
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Rear wheel not aligned with frame but cog and crank is aligned

My bike was previously a 26er mtb 3x7speed and I converted it now to be a single speed freewheel bike. Is the bike safe to use if the rear wheel is not straight to the frame? It is closer to the drive ...
Jebs Jebs Santillan's user avatar
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1 answer
204 views

Is my bike safe to use if cogs and crank is not that aligned?

Hey guys is it fine if my freewheel bike which is single speed is not that straight with its chain line, because my cogs and crank arent that straight but it is also not that far, im thinking if it is ...
Jebs Jebs Santillan's user avatar
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1 answer
2k views

How do I use a freewheel as a single-speed?

Can I disassemble a free wheel sprocket and use it as a single speed sprocket or I have to buy a single speed sprocket?
andy hyacinthe's user avatar
0 votes
2 answers
1k views

Fixed gear bike chain alignment

I have recently converted my old early 90s 18 speed Peugeot road bike to a fixed gear. The chain is clicking when pedalling and is out of line by about 10mm as you can see in the photo. The rear cog ...
Tom Vine's user avatar
3 votes
1 answer
168 views

Chain keeps falling off chainring

I picked up an old Raleigh Sirocco from the 1980s ish and am attempting to convert it to single speed. I thought it was finished, but when taking it out for its first ride, the chain kept falling off ...
Simone's user avatar
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2 votes
1 answer
2k views

Rear dropout with adjustments screws of a single speed bicycle

I have got a single speed bicycle (Pure Fix Original Series) and I need to remove the rear wheel to the replace the punctured tube. The rear dropout has adjustment screws (I am not sure if this is the ...
Cm7F7Bb's user avatar
  • 155
1 vote
2 answers
304 views

Upgrading cycle from single to multi-speed

I own a single speed MTB . I'm planning to upgrade it to multi speed. As I'm on a tight budget, should I just upgrade my rear to multi speed or upgrade both front and rear. Is it a good idea to ...
ubermensch's user avatar
8 votes
3 answers
2k views

Convert single speed, steel framed, vintage track bike to geared

Is there any way to convert a steel framed single speed vintage track bike to a geared bike? I have a track bike with only the rails for the wheel but I've moved out of the city and there are more ...
Andrew Welch's user avatar
  • 2,954
1 vote
2 answers
1k views

Convert track bike to geared

Is there any way to convert a track bike to a geared bike? I have a track bike with only the rails for the wheel but I've moved out of the city and there are more hills where I am now living so would ...
Andrew Welch's user avatar
  • 2,954
0 votes
2 answers
78 views

Need help with gears and wheel alignment

i have an aluminium frame single speed. I wanted to know is it possible to add gears to it (correctly). I saw same model with gears installed but the rear wheel was not in line with front wheel and ...
Dry Water's user avatar
7 votes
3 answers
2k views

Setting up chain tension on a fixed gear with road bike frame

I got a road bike frame with vertical drops, so can't set the tension up. Tried to remove one link but then the chain becomes too short. My next idea was to change the front sprocket, currently have ...
Nazar Pasternak's user avatar
0 votes
1 answer
973 views

Conversion to single speed: crankset specs?

I picked up a cheap frame recently which came with bottom bracket, 3x speed chainring, crank arms and pedals, handlebars, forks, and front & rear rim brakes. I've removed the chainring and right ...
mjvolpe's user avatar
0 votes
2 answers
450 views

Can I use an 1/8" chain on an old 8speed I'm converting to single speed?

I am in the process of converting an old road bike of mine into a single speed. I bought new crank arms, rear wheel (with a conversion kit), and a rear derailleur. Do I need to use a 3/32" chain, ...
Fred's user avatar
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6 votes
2 answers
1k views

How do I properly torque a track cog lockring?

I see a torque rating is stamped onto a lot of track cog lock rings: However, I cannot find a way to use a torque wrench when tightening the lock ring. All the tools I've found, like Park Tool's HCW-...
pbnj's user avatar
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1 vote
1 answer
5k views

BB spindle length standard for single speed bike?

Is there a common spindle length for typical fixie/single speed bikes? Namely a bike with: a 68 mm BSA bottom bracket shell a square taper bottom bracket cartridge bearing 120 mm dropout distance ...
gschenk's user avatar
  • 9,808
3 votes
1 answer
708 views

Strida single speed - upgrade to 2-3 speeds possible?

Would it be possible to upgrade a single-speed Strida to 2-3 speeds? I know there is a Strida model with 3 speeds but the frame is different with respect to the one of a single speed. In particular, ...
the_eraser's user avatar
3 votes
2 answers
714 views

Bottom bracket needing repacement more often in a single speed bike

I used to live in quite a hilly area but managed well with a single speed Mango aluminium bike on most of these hills. I wanted to know if it is possible that due to extra pressure being exerted on ...
subobject_classifier's user avatar
6 votes
2 answers
711 views

How I can remove this freewheel (without "destroying" it)?

How I can remove this freewheel (without "destructing" it) ? By "destructive removal" I mean this: https://www.parktool.com/blog/repair-help/freewheel-destructive-removal P.S. I ...
Michael D's user avatar
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2 votes
2 answers
5k views

single speed freewheel Shimano SF MX 30 vs Shimano SF-1200

What is the difference between: single speed freewheel Shimano SF MX 30 and Shimano SF-1200 ? Why those freewheels donesn't appear on shimano website? P.S. From the pictures it's clear that the ...
Michael D's user avatar
  • 1,002
3 votes
2 answers
637 views

Freewheel threading on Miche flip-flop hub

I'm currently building a parts list for a new single-speed bike. In the process, I came across a nice looking flip-flop hub from Miche: The "Primato Pista/Strada" I figured that adding the fixed ...
Markus's user avatar
  • 131
2 votes
1 answer
444 views

Converting my Raleigh Equipe to a single speed: Can I use a conversion kit?

I am a complete bike novice and am trying to convert my raleigh equipe road bike into a single speed (after a plastic bag blew out my rear derraileur). I have purchased a single speed conversion kit: ...
Jamie's user avatar
  • 45
2 votes
1 answer
380 views

Converting Surly new hubs from 130mm to 120mm

Can I convert 130mm Surly New hub from 130mm to 120mm by simply replacing with a 120mm axle? I have a 130mm hub that I'm running on a sscx bike, and want to use the wheel for a track bike with 120mm ...
Zian's user avatar
  • 163
1 vote
2 answers
1k views

Single speed chain alignment

I have a seasoned 26" Dirt Jump bike where the time has come to replace the bottom bracket. The bike currently has Profile BMX cranks, with a single speed rear wheel (not an MTB freehub). Current BB ...
el_oso's user avatar
  • 734
0 votes
2 answers
1k views

Need help finding compatible bottom bracket and crank set for track bike

My bike is this: https://www.santafixie.co.uk/derail-black-fixed-bike.html The BB measurements on the link are CH55 BSA 68/107. I know literally bare minimum about bottom brackets and crank sets. I ...
Luke Russell's user avatar
5 votes
1 answer
274 views

Chain slipping off from singlespeed rear cog

After I have worn out the cogs and chain to the point where my chain tensioner couldn't keep up anymore, I have replaced my drive train pieces, the axle and spacer are still the same. So I went from: ...
Mio Bambino's user avatar
1 vote
1 answer
157 views

Need help choosing my chainring and size whilst moving from 3x7 to 1x7

If have a 6/7 speed cassette and I’m thinking of changing to single-speed in my front chainring, what chainring size would anyone recommend?
Cameron Dallas's user avatar
1 vote
2 answers
3k views

What is the difference between 1/2'' x 1/8'' and 1/8'' chain size for single speed?

I get the difference between 1/8'' and 3/32'', but does this 1/2'' really make a difference, or is it the same thing? I want to use the chain for track cycling.
Deadpool's user avatar
  • 346
6 votes
5 answers
9k views

Used WD-40 on headset and now it loosens daily

I've used WD-40 on my bike's headset as it produced some cracking noises. The result is a headset that gets loose after every ride. I've tried to use a wrench to tighten it, alas, it went loose after ...
Eran Betzalel's user avatar
2 votes
1 answer
791 views

Are sealed bearings equal to cartridge bearings in single speed hubs?

Single speed hubs are often speced with sealed bearings. In my brief market search I haven't seen any hubs with cartridge bearings in the specifications. Are sealed bearings used synonymous with ...
gschenk's user avatar
  • 9,808
1 vote
1 answer
845 views

What is the difference between KMC 410Z vs 710 chain?

What is the difference between KMC 410Z VS KMC 710 chain? For use in single-speed or fixed gear bike.
Michael D's user avatar
  • 1,002
2 votes
2 answers
195 views

How is the Bikight aluminium chain tensioner installed?

Bikight tensioner Is it perhaps installed next to the wheel, in the inner part of the frame?
Fran's user avatar
  • 21
4 votes
2 answers
513 views

Chain on singlespeed tight, pedals won't turn backwards very freely - is this an issue?

A well-known and well regarded shop fixed something on my converted single-speed bicycle. On the ride back from the shop, the pedaling felt "different", and I noticed that the pedals will stop after ...
cwj's user avatar
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