15

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 more books on the subject than websites to be sure of. Although there are so many styles of railbikes out there, it would be quite difficult to know what would ...


15

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 designed with particular bars in mind, because changing the bars makes a big difference to riding position. There's no point spending £1400 on a bike and then ...


12

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 of the rim and more to do with fitting the tire beads and valve into a narrow rim. If the rim is wide enough to accept a Schrader and mount the tire, its strong ...


11

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 reliable) for as low as 25 Euros, or you can invest roughly a thousand euros into a new top-of-the-list IGH (Rohloff, 14 gears, 500% gear spread, super reliable, ...


9

The desired conversion is possible, but maybe Trek won't do it as a "default" service. You could consider going to the local bike shop and trade some of the bike parts (specially the gearing system) for a coaster brake wheel. If your bike is like the one in the photo, you need to replace the rear hub, and get rid of the cogset, the derailer and the twist-...


9

Adapters like this do exist, e.g. http://www.danscomp.com/489051.php?cat=PARTS or http://www.bentechbikes.com/vbrakes.htm (Edit: Links are now dead, but they were basically the same as the one in the photo below. Sourcing one might be even harder now though.) In fact I used one on my old folding bike - but you can see it looks a bit of a mess, and when I ...


9

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 break the frame. However, I don't see a problem with removing your back saddle, cutting/removing the back cranks and building a sturdy plywood/mdf cargo hold ...


9

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 suggest, leaving the front as a 1x system. This is subjective, but I would just get a relatively moderate ring on the frontm between 40t to 46t depending on how ...


7

Yes, a battery holder and switch from radio shack would accomplish this. Most dynamos are 6vac and can be replaced with 4xAAs or the 5vdc from a USB pack. You can ignore the issue about polarity as the dyno lights that I've worked are either incandescent and don't care or are LED but have built in blocking diodes and don't care. Whether you would want to do ...


7

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 measurements that are either symmetrical or close to it, creating a wheel with no or almost no spoke tension disparity, which makes it stronger and more robust. (...


7

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 between the front axle and the steering axis The axle to crown is the length between the center of the hub axle and the crown of the fork. There's lots of ...


7

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 not be enough room for the chain stays to clear a second chain ring. What is more, some frames lack mounting positions and the shape or material of the seat tube ...


7

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 the existing setup are given. So let me instead outline a structure of the costs. A new 1×11 groupset (cassette, chain, derailleur, shifter, front chainring, ...


6

The first thing to note is "Does the 8 speed hub clear the dropouts ?" You may be able to spread the frame if steel. Since you're likely going from a 120mm to 130 mm (which is 2 sizes - 120->126->130), you should be cold setting it. The second question would be "Can the brakes reach the rim?" Unfortunately, to my knowledge, nobody makes a 5 speed ...


6

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 diameter of the same size as your seat tube new inner gear cable and cable housing for the front mech a pair of cranks that have the same length, and same size ...


6

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 effort.


6

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, because flat bars place the rider's hands closer to the head-tube than drop bar hoods or drops hand positions do. Also, compatibility of brakes, levers/shifters ...


6

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 thus the desirability of low gearing and a range of gears, I’d recommend a bottom bracket motor such as a Bafang BB - the only concern is if there’s enough ...


5

No, it is not a good idea. You'd be spending more than the bike is worth even for a basic internal gear hub (even assuming you got the wheel rebuilt for free using the existing rim and spokes, if possible), let alone buying a rear wheel with an IGH built in. You do need a chain tensioning pulley or horizontal dropouts, which while can be built more robustly ...


5

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 millimetre by fiddling, but not the difference I needed. Please ignore the dodgy-looking cracked tyre sidewalls... they where only for testing. Here's the drop-...


5

Can you turn you MTB into a good, road worthy machine? Short answer: Sure, why not? If you intend to do any road racing,forget about it, HOWEVER, if having a quick and sturdy bike for commuting, weekend terrorizing, or even the occasional century is what your after, then definitely go for it! I did! First and foremost, skinny tires are a must. There are ...


5

You probably don't need to purchase a new crankset. You can remove the the rings you don't need and simply add a new ring. You'll need to know the distance of the bolt holes of your current chainrings/crank. This is known as the BCD (bolt circle diameter) and you can usually find it stamped on the chainring. Common sizes include 130mm, 110mm, 94mm, etc. ...


5

Are they a gimmick, work "meh", or extremely functional? Any experience with them? I ride internal gear hubs (IGH) only, because they are extremely functional. I definitely prefer them over any deraileur system. Why? Because IGHs have much better shifting than chain-shifts: Ever stopped at the lights with your chain-shift in the wrong gear? Well, ...


5

Yes. The best way to do it is to use a White Industries ENO Eccentric Hub (I don't care that I'm giving a product recommendation here because this is the only product that's ever done what it does), the alternative being using a magic ratio setup. The other part of it is getting set up with the proper chainline up front.


5

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 have a hole drilled in the downtube with a rod going between the mounts and maybe some epoxy using something like this: Some other options are: Find a ...


5

You have to consider compatibility between the shifter/brake lever units and: Rear derailleur Front derailleur Brake caliper Rear derailleur should be fine, Shimano uses the same cable pull ratio for everything 9 speed an below. Front derailleur is probably OK, although I'm not familiar with Shimano's schemes for front derailleur cable pull ratio. Brakes ...


5

You have other options as well if you get on with the bike but not so well with the bars. I bought a new primary bike a couple of years ago - it was a steel tourer with similar specs to the Sutra, and I'd only spent a couple of hours total on drop bars before. I believe fit on a gravel/adventure road bike to be closer to a touring fit than a race fit - ...


5

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 retention systems and can be converted. This does not look like one of them. I've never seen a rim brake hub with a through axle.


5

gshenk's post is excellent general answer, here's the specific answer for the setup on the Digger Comp. The Digger comes with an RX-600 40t crank, RD-RX812 derailleur and CS-M7000 11-42 cassette. The RD-812 derailleur is compatible with wide-range mountain bike 11 speed cassettes (which have different spacing that 11 speed road cassettes). It's not designed ...


4

Indeed It should work. The other answers address chainline correction options for the rear end, but I know at least two for the front side: Usually two big rings in a triple, or the two rings of a double would be fixed by a single set of bolts. That means the chainring bolts are long enough to hold 2 chainrings. When going to hold only one, it may happen ...


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