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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
16 votes
Accepted

Can a normal bicycle be adapted as a draisine (to use on abandoned railways with the tracks in place)?

Yes a regular bicycle can be adapted as a draisine or a railbike as we call them (to use on abandoned railways with the tracks in place)? California, USA is big into this sort of thing. There are ...
Ken Graham's user avatar
15 votes

How do I purchase a drop bar bike that will be converted to flat bar?

Converting between drop and flat bars is generally a huge amount of hassle. As you say, there are all kinds of incompatibility issues around brakes and shifters, and the geometry of the frame is ...
David Richerby's user avatar
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
  • 734
12 votes

Presta or shrader valve for mtb?

The debate of Presta or Schrader is mostly religious and often based on poorly misunderstood facts or historical differences. Rim Width. In the 21st century, the problem is less about the strength ...
12 votes

Can I mount disc brakes and 650b wheels on this bike?

Nope. This frame does not have disc-brake mounts. IS mounts would be up the seatstay from the dropout, on a little flange. Those look like fender/rack mounts. You will not be able to put disc brakes ...
Adam Rice's user avatar
  • 30.1k
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
10 votes

Converter for quick release skewer to thru axle

You can't convert a QR bike to use a TA, sorry. Not without welding anyway. The frame, specifically it's dropouts, control what you can use to retain the wheel's axle. To use a through-axle, the end ...
Criggie's user avatar
  • 125k
9 votes
Accepted

Converting tandem to cargo bike

If you want to have a real cargo bike, e.g. an "inverse Bullit-style" the challenge will be structural integrity of your frame: you can't easily cut the 2nd diamond of your frame without risking to ...
SebastianR'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

Shimano Deore as Gravel Bike

There are no Shimano brifters that are 2x11 compatible, but Microshift manufactures some. I use a Microshift SB-110 (1x11) and a bar-end shifter for a drop-bar 3x11 setup with an XT rear derailleur (...
Tristan C.'s user avatar
9 votes

How do I fit an e-hub motor axle that is too big?

Since you say you were able to get it into the dropouts, it appears you're talking about the over-locknut dimension (OLD) of the hub and frame, sometimes known as the frame spacing, and that you're ...
Nathan Knutson's user avatar
8 votes
Accepted

Change Shimano GRX 1x to 2x

It depends. For most gravel bikes it will be an easy, yet expensive, swap. A couple of gravel bikes frames are built in a way that makes shipping a front derailleur as good as impossible. There may ...
gschenk's user avatar
  • 9,778
8 votes

Can I mount disc brakes and 650b wheels on this bike?

As Adam says, you're out of luck with disk brakes here. To get all your wish-list items, you're looking at another bike. There are adapters for disk calipers, but they don't reinforce the frame and ...
Criggie's user avatar
  • 125k
8 votes

Risk for road bike to gravel bike conversion

The frame itself is no concern at all. You are likely remembering statements that aluminum has a fatigue life but steel and titanium don't. What this means is that the latter materials will never fail ...
Weiwen Ng's user avatar
  • 32.3k
8 votes
Accepted

Converting Belt Drive Bike With Paragon Sliders to Conventional Cassette

If what you have now is the plain "no hanger" drive side Paragon insert, there's not really a good way of getting a rear derailleur installed on to it. Depending on the situation, it's ...
Nathan Knutson's user avatar
7 votes

How do I know if I can replace the 27 inch wheels with 700c wheels on my bike?

You will probably need to drop your brake calipers. I did this on my 1981 Raleigh. Despite fitting long-reach Tektro R559 calipers, the back wheel looked like this: There might have been another ...
Criggie's user avatar
  • 125k
7 votes

Is it possible to convert a single speed rear wheel into a multi-speed rear wheel?

Conventional wire spoked wheels don't allow this. All types of conventional singlespeed hub (BMX, cassette, freewheel, track, coaster) take advantage of their one-cog-ness to have center-to-flange ...
Nathan Knutson's user avatar
7 votes

Can I put other type of fork to a downhill frame? Is this a DH frame?

Yes and no. What really matters for handling of the bike is that the fork you use has the same axle to crown length and the same offset as the fork the bike should have. The offset is the distance ...
abdnChap's user avatar
  • 3,339
7 votes

Converting 3*7 speeds to 1*12 or 1*11

The questions about the price is out of topic here because they are impossible to answer "universally", for the answer to be useful to more than one person, especially when no details about ...
Grigory Rechistov's user avatar
7 votes

Converting to 3x from 1x

Frames sold with 1x builds may be designed in a way that's freed of the constraints of FD bikes. They might not have the small or large ring clearance needing for any given multi-ring crank. The seat ...
Nathan Knutson's user avatar
7 votes

Can I mount disc brakes and 650b wheels on this bike?

Some Trek frames do not come ready for disc brakes but an adapter does exist. I had a Trek Fuel (Full suspension Frame for XC) and the authorized dealer has proposed to upgrade the bike by adding the ...
Jahaziel's user avatar
  • 12.5k
7 votes
Accepted

Will this modern road bike hub fit in my 1990's MTB (130mm restoration)

Yes, it will work without issue. To make it work with 7-speed you'll just use a 4.5mm spacer that's made for the purpose behind the cassette.
Nathan Knutson's user avatar
6 votes

Installing downtube shifters with no clamp

Without any additional knowledge on the bike, my advice would be don't drill into the down tube. You run the risk of making it structurally unsound. That being said, some bikes with downtube shifters ...
Batman's user avatar
  • 46.2k
6 votes

Single to double chainset conversion

You need a bunch of things. left hand shifter, or a left hand replacement brifter if your bike has integrated shifters front derailleur mechanism with a band-on (aka bolt-on) clamp mechanism and ...
Criggie's user avatar
  • 125k
6 votes
Accepted

Removing rear hub end caps (Mavic Allroad Pro)

Unfortunately you have to use force to get those guys off. If you can wrap the cap with a rag and then grip it with a pair of pliers you should be able to pull it straight off. It will take some ...
wski's user avatar
  • 1,175
6 votes

Convert city bike to road bike

Depends what you mean by city bike and road bike. If you mean converting a bike with flat bars to one with drop bars there are issues. Flat bar bike frames are typically longer than drop bar frames, ...
Argenti Apparatus's user avatar
6 votes

Rickshaw electric conversion

Tadpole-style trikes with one wheel in back are quite easy to electrify. You can either use a rear hub motor or a bottom bracket motor. Given the high startup torque requirements with rickshaws and ...
RoboKaren's user avatar
  • 29.2k
6 votes
Accepted

Converting quick release to solid axle

Can I even put in a solid axle in this wheel/hub? Probably not. The axles of QR hubs are generally not designed to be removed and replaced with a through-axle. Some hubs are designed for both ...
Argenti Apparatus's user avatar

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