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38 votes
Accepted

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

You do not have a single-speed. The rear wheel on your bike has a 7-speed internally geared hub. This uses a couple of sets of planetary gears, each of which can be engaged in two different ways, plus ...
Adam Rice's user avatar
  • 30.1k
30 votes

Fixie vs Road Bike - the right fixie bike for bunch rides

Disclaimer: I am a fixie hater. I'll try to answer this as if I was impartial. Proper road bikes (Including the Moulton) are the machines for speed, and always have been (unless you're on a velodrome)...
BSO rider's user avatar
  • 5,735
19 votes

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

This is not a single-speed bike. It's an internally-geared hub made by Sachs, later bought by SRAM, which later stopped production of the hubs. If you take a better photo of the label on the hub, we ...
Erlkoenig's user avatar
  • 2,047
18 votes
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Can I convert a 1x9 speed bicycle to single speed by putting 9 identical cogs into cassette?

Since 1982 or so just about all rear derailleurs are built with a slant parallelogram design so that it glides in a diagonal line as it shifts up and down. This is supposed to keep the jockey wheel a ...
mander Don't reinstate Monica's user avatar
17 votes

Fixie vs Road Bike - the right fixie bike for bunch rides

Who rides fixes? Roadies who have got bored with always being out the front? Maybe its someone wanting to make a statement to the "Freds" (look it up) in the group I once did a 160km ride where some ...
mattnz's user avatar
  • 50.9k
14 votes

Used WD-40 on headset and now it loosens daily

Using WD40 on a headset should not cause it to loosen. Something else is wrong. You need to find out what that is. First - don't ride the bicycle until the problem is identified and fixed. Doing ...
Andrew Henle's user avatar
  • 10.6k
14 votes

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

I would say : no way. The rear derailleur is not supposed to handle cogs with the same dimension. The cogs should be smaller towards the outer part of the cassette, to correspond to the movement of ...
rvil76's user avatar
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12 votes
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Does having bigger wheels mean less effort pedaling?

Assuming a completely smooth road and neglecting the weight of the wheels, it makes no difference: you still need to do the same amount of work. Essentially, larger wheels give you a higher gear ratio,...
David Richerby's user avatar
12 votes
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Derailleur On A Single Speed

The derailleur is there to act as chain tensioner. In a frame intended for derailleur the rear wheel can't be moved to tighten the chain, so a separate spring-loaded chain tensioner is needed. The ...
ojs's user avatar
  • 22.1k
12 votes

10 gears to singlespeed

I've got a 2nd hand Hercules too and I've done this exact thing. Get a quality chain tool and look up some videos on Youtube about how to remove and re-link a bike chain. I pretty much winged it as I ...
Poster's user avatar
  • 121
11 votes

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

If you cannot control the rear cog's position, you can try moving the front chainring to tune the chain tension. That is, get an eccentric bottom bracket: By rotating it in the frame, the distance ...
Grigory Rechistov's user avatar
11 votes

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

Yes. Absolutely. Simply install an internal gear hub. Prices for internal gear hubs are basically what you want to spend: You can buy decent second hand IGHs (SRAM 7 speed, 300% gear spread, super ...
cmaster - reinstate monica's user avatar
11 votes

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

Additionally, you'd have to have at least one different cog, probably an 11 or 12 tooth outermost, because it has a differnet design to every other cog. This little cog also has the detents for the ...
Criggie's user avatar
  • 125k
11 votes

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

As other answerers have said, that bike has hub gears rather than being a single speed bike. However, no-one so far has commented on what the differences with this style of gears are. Compared to ...
Jack Aidley's user avatar
10 votes
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Turn single speed into multi speed!

Technically yes, economically no. You obviously need to obtain a multi sprocket cassette, rear derailleur, shifter, and cable and housing. Additionally you need: Singlespeed frames have dropouts ...
Argenti Apparatus's user avatar
10 votes
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How do I properly torque a track cog lockring?

A torque specification is not just a torque-spanner setting but a physical property. That is, there are many ways to apply the correct torque. In this case it means more or less: pull it as tight as ...
gschenk's user avatar
  • 9,778
10 votes
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Setting up chain tension on a fixed gear with road bike frame

The short answer, is you generally cannot make a fixie out of a frame with vertical dropouts. Not only do you need to tension the chain, but the spacing of the axle of the bottom bracket and rear ...
whatsisname's user avatar
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9 votes
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Finding which gear on my bike is closest to a single-gear bike

We can't tell without more information about your gears. However, you can figure it out for yourself quite easily, by looking at the ratio of chainring teeth to rear sprocket teeth on the single ...
Lachlan's user avatar
  • 358
9 votes
Accepted

Convert fixed side of flip flop hub to freewheel

You can just use the freewheel on the large thread on the fixed side. It's the same size, and just as durable as the freewheel side, for normal people. So just unscrew the lockring and cog, and put ...
Jakob's user avatar
  • 106
9 votes
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Ideal distance between chainring and chain stay

4mm at the closest point is about the safe spot. 3mm is about the sane bare minimum you can go to if you want to push things. Less is asking for trouble. Note that frames, cranks, rings, and spindles ...
Nathan Knutson's user avatar
9 votes

10 gears to singlespeed

If your bike has slotted dropouts and a rear wheel secured with axle nuts (which Poster's answer implies you have) you can do a single speed conversion without the need for a chain tensioner device. ...
Argenti Apparatus's user avatar
9 votes
Accepted

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

The bike in the question is not what is considered as "track drop outs". For that bike, depending on the rear wheel spacing, it should be relatively easy to convert back to geared. I would ...
abdnChap's user avatar
  • 3,339
9 votes

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

Ah, but this is not a single speed bike. The gears are within the hub and invisible to the naked eye. If you remove the cable, the hub will default to (probably) the highest/heaviest/hardest gear. If ...
Noise's user avatar
  • 14.2k
8 votes

Single disc brake front of SS bike?

Like the late great Sheldon Brown wrote in his article, I use the front brake alone most of the time. But there are great reasons to have a rear brake in addition to the front brake: Slippery ...
rclocher3's user avatar
  • 2,651
8 votes
Accepted

Fixie vs Road Bike - the right fixie bike for bunch rides

For context, I have been doing group rides for about 20 years now, raced at the cat 1/2 level for a good portion of that, and had a fixed gear obsession off and on for many years too. Riding fixed is ...
Rider_X's user avatar
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8 votes
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Getting the right Bottom Bracket

If you have an idea of what model of frame it is, it would help. Otherwise, your best bet is to take it to a bike shop and try an ISO bottom bracket (gently) to see if it fits, or measure the threads ...
Batman's user avatar
  • 46.2k
8 votes

Single speed chain tensioner comparison

You should never use a sprung tensioner when you have a choice. They add fragility and complexity. They exist only to allow single cog drivetrains to work with dropouts that don't allow chain tension ...
Nathan Knutson's user avatar
7 votes

Fixie vs Road Bike - the right fixie bike for bunch rides

Engineer and fixed gear rider here, hello. My top speed on flat on fixed is 1 km/h less than on geared bike with similar wheels, and I'd explain that with my geared bike having lower handlebars. On ...
ojs's user avatar
  • 22.1k
7 votes

Convert fixed side of flip flop hub to freewheel

As a follow up, I actually did put the freewheel on the fixed gear side (after some cleaning). As you can see from the pictures, the freewheel won't be all the way threaded (like my LBS said) but it ...
LeviX's user avatar
  • 282
7 votes

Converting 3×7 speed into a 2(chainrings)×1(sprockect)

Without a rear derailleur one cannot switch gear on the front chainring. The length of the chain would differ between chain rings. The derailleur compensates this by running the chain a longer path ...
gschenk's user avatar
  • 9,778

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