Questions tagged [folding-bicycle]

Questions about bikes that are designed to fold or collapse for ease of storage.

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1 vote
2 answers
27 views

brake calyper/bridge types and question- single screw to the frame

I need to replace a front brake for a city/folding bicycle. but I am not used to these "brake bridge" system; I am more into the MTB scene. for some reason the calyper in the picture ...
2 votes
2 answers
95 views

Montague FIT folding bike with “snaking” frame

My 2012 Montague FIT folding bike has started to “snake” especially when riding at speed downhill. I have tightened the frame quick release and inspected and tightened the pivot nut but the snaking ...
5 votes
4 answers
1k views

Seat post keeps sliding down after cleaning and lubricating folding bike

The last time I used my folding bike I gave it a thorough clean, and used WD-40 on the moving parts and then lubricated them again with a silicone-based lubricant spray. This is an eleven-year old ...
3 votes
1 answer
151 views

Convert Dahon Mariner D7 to belt drive and internal hub?

Is it feasible to convert a Dahon Mariner D7 to use a belt drive and an internal 7 speed hub? Any ballpark estimates for cost of parts? I ask because I am rehabilitating my Dahon sailing bike of 15 ...
15 votes
10 answers
6k views

Why aren't 16" wheel city bikes more common?

I love the Brompton with its obvious folding capabilities. However the best part of the bike for me is not the folding but the fact that it's small with its 16" wheels and light/compact frame. I ...
4 votes
4 answers
426 views

Prevent folding bike from unfolding

I bought a vintage folding bike recently. The problem is that when I fold it there is no mechanism to keep it that way. I use a velcro strap but it's quite a hassle to put on when I'm trying to catch ...
  • 171
7 votes
3 answers
3k views

Why are folding fat-tire bikes all-electric?

There's an area in my state that has a good number of trails for mt biking, snow biking on large (4-in tire) fat bikes. I rented one at one time and it was fun in the snow. Many trails there are ...
  • 461
1 vote
1 answer
89 views

Is it possible to switch from 20" wheels to 24" wheels on the same frame?

I'm trying to figure out the feasibility of a 20" mini-velo for city use, which can then be converted to 24" MTB wheels for rougher terrain. Assuming the wheels clear the fork and frame, ...
  • 319
0 votes
3 answers
272 views

Any idea what this is before I buy it?

I Found this locally. What is it? It is currently for sale for what looks like a good price and it's in pristine condition, no rust - looks like it's never been used! Do you know what kind of bike (...
6 votes
2 answers
354 views

Are small radially laced motor hub wheels like Swytch trash?

I saw a bike that recently had this kit installed on it, and was surprised at the radial spokes: From having done rebuilds on 20" motor hub wheels, I can appreciate the temptation to look at ...
3 votes
1 answer
151 views

How to remove the fork off this Peugeot Nouveau

I have this Peugeot Nouveau fold up bicycle that I'm trying to restore, but I can't manage to remove the forks from the frame. I've removed the handle bars and the stem(?) as well as the pieces that ...
4 votes
3 answers
2k views

Bicycle weight limit (carrying capacity) increase

I have a cheap 20" folding bicycle. Its specs say that the max rider weight is 105kg. The frame is steel (vaguely defined as "HiTen" steel). I want to convert it to electric, so will be ...
  • 161
4 votes
1 answer
235 views

Consultation needed! To repair or throw out?

i found these two bikes by the dumpster- Dahon Boardwalk folding bikes. They are totally rusted by the salty air (it's a humid salty beach climate). The chain is rusted and when I push the pedal, the ...
0 votes
0 answers
92 views

Why fit a usb on my ebike battery when not even connected

Id like to ask if anyone else has a viking gravity ebike with a internal frame battery pack which has a usb port included. Thing is i found out that it wasn't working even though its a brand new ...
0 votes
0 answers
62 views

Locating the bicycle manufacturer

I have purchased a fold-up all-terrain mountain bike serial # LDR15080363 that I would like to restore to the manufacturer’s specifications. Unfortunately, I have been unable to confirm who the ...
0 votes
4 answers
391 views

Upright bicycle efficiency & seat movement

The Kwiggle is folding bike that has been around for a while now (even though doesn't seem to be for sale yet): https://kwiggle.odoo.com/en_US/startseite Apart from it's folding capabilities I was ...
1 vote
3 answers
174 views

Bike transport while touring - would a folding bike be better?

So I’m thinking of touring with my lovely self made diamond bike with 28” wheels that I built from used bike parts. I love to ride on something that I built but I wanted to be able to tour a lot and ...
2 votes
0 answers
153 views

Does anyone has an experience putting mini-velo into a standard-sized luggage?

Personally, I don't trust the designs of many folding bikes mainly because of frame failure issues. So, I am thinking about getting a mini-velo bike, but I wonder if it is possible to fit the bike ...
  • 121
3 votes
1 answer
343 views

Has a BMX bike ever been transformed for touring?

BMX frames are notoriously small and nimble for acrobatics. I was curious if the same frames and the same 20" wheel bikes were ever used for touring. Obviously the single-gear and the low-seat ...
1 vote
0 answers
279 views

Adjustable Andros-like stem for 31.8 handlebar

I have used the Tern Andros stem system and got one with it well. Recently I acquired a Riese and Muller folding bike, which has an adjustment system which (for me) is less comfortable. It puts the ...
  • 65
2 votes
1 answer
416 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, ...
0 votes
1 answer
168 views

Alwasy getting a flat rear tire on my 14"inch folding bike

I just bought my 14" folding bike and I always getting a flat tire on the rear. It happened 4 times in a span of three days. 1st flat was with the stock inner tube, 2nd flat is with the new inner ...
3 votes
1 answer
91 views

Dahon Speed Uno. Main frame hard to fold

Is there a way to lubricate or adjust the tension on the main frame hinge on a Dahon Speed Uno? New bike, and it is extremely difficult to fold in half.
  • 31
11 votes
2 answers
2k views

Front V-brake not working

My V-brake isn't working and I am not sure how I can fix it. I have uploaded a photo of it. Any advice or tips?! I think the flange might have come off the noodle and got stuck in the boot - any tips ...
  • 111
1 vote
1 answer
732 views

Increasing length of seatpost on a foldable bike

One of my bike is this little Dohiker 14" electric bike, but I actually pedal a lot when riding it, and the seatpost is a bit too short. It is about 50cm long, and I would need a few more centimeters. ...
3 votes
1 answer
487 views

Does a Tern Cargo Rack fit on a Bike Friday NWT (whilst accomodating Ortlieb Backroller Classic Panniers)?

I was wondering, whether a Tern Cargo Rack fits on a Bike Friday NWT with a Sram Dual Drive 27 whilst accommodating Ortlieb Backroller Classic Panniers. The problem with rear racks, the Sram Dual ...
  • 1,286
1 vote
1 answer
711 views

Using a brake noodle on the gear cable?

I'm working on adding a front derailleur to a folding bike that started as a 1x setup. Today I got a front derailleur mounted, and realised that I need some form of cable stop for the inner cable. ...
  • 103k
4 votes
1 answer
990 views

Tern Spartan (front rack) on Bike Friday NWT

Does anyone have experience with putting a Tern Spartan™ low-riding front rack on a Bike Friday New World Tourist? Will it fit? Tern Spartan front rack: Bike Friday NWT Bike Friday standard front ...
  • 1,286
4 votes
1 answer
1k views

Fiido D2: shock absorber broken

I bought almost an year ago a Fiido D2 bike. I use it everyday for my commute to work and unfortunately it broke. I brought it to a bike repairer and he said that there's nothing he can do. The only ...
  • 141
6 votes
3 answers
2k views

Type of permitted folding bikes on London trains & Tube?

I have found quite a bit of information about taking folding bikes on trains and the Tube in London. Specifically it says you can take a folding bike pretty much anywhere. However, having examined ...
1 vote
3 answers
203 views

How can I replace my front cog... or fix slipping off on folding bike?

I have a Faulkner folding bike and I notice often the 6th gear, high gear falls off switching to high gear. Someone mentioned that the cog might be a bad choice for the front of folding bike and may ...
  • 461
0 votes
3 answers
445 views

How can I stop someone borrowing my bike anymore? [closed]

There's this kid I've been riding with for quite some time that keeps borrowing my bike non-stop leaving me riding his broken bike. Not that I dislike him riding my bike or anything, is just that ...
4 votes
1 answer
1k views

JIS and ISO square taper

I've read Sheldon Brown's page on JIS and ISO and have read exchanges in forums about the pros and cons of using ISO cranks on JIS bottom brackets. If my understanding is correct, these standards ...
3 votes
2 answers
721 views

What are these cable "unions" called

The Moulton bike can be taken apart for travel (just using it as an example, I don't have one). The cables that run from the handlebar to the rear triangle are not single continuous cables but are ...
-1 votes
1 answer
321 views

Are there folding bikes with safer - locked steering?

I see folding bikes have several more quick releases and possibly fail points - to fold in half and fold the steering column down, and connect the handlebar to steering column. The really awkward ...
  • 461
12 votes
4 answers
3k views

Big dent on frame: How did this damage happen?

I just bought this second hand Ridgeback Impulse folding bike for my partner. I'm a wheelchair user and it was dark and rainy when I collected the bike. So... I didn't check it (facepalm) I just got ...
1 vote
2 answers
792 views

Is a folding bike's chain more likely to slip?

I have recently purchased a Raleigh folding bike second hand. I had to take it back for servicing (within warranty) when there were problems with the gears and derailleur. The dealers have replaced ...
  • 273
2 votes
0 answers
584 views

upgrade traditional saddle clamp (not seat tube clamp)?

I'm currently restoring my folding bike and it has a large diameter (34 mm/1.34 in) seatpost that tapers to the standard 22 mm/0.87 in diameter at the end. The bike currently uses that traditional ...
  • 1,121
6 votes
2 answers
2k views

Wheel diameter affects speed? Comparing 20in Foldie wheel vs 700C wheel

I am currently riding a Foldie with 20in wheels and also a 700C road bike, and I see that (Subjectively) I can ride ~5kmph faster for the same effort on the road bike. I am curious to know how much of ...
  • 531
3 votes
1 answer
2k views

Is it possible to use BMX steerer (stem+handlebars) on fork on folding bicycle?

II want to replace my folding bike's steerer with a BMX setup. I've been told by a bike shop that it is not possible because the steerer tube protrudes 10 cm higher than the frame tube.
1 vote
0 answers
92 views

Could you advise me on budget folding bikes [closed]

I figured the best way for me to commute to work (3 - 4km) during the summer may be riding a bike. The problem is that I live on the fifth floor and there's no elevator in my building, thus I need ...
  • 11
5 votes
2 answers
454 views

Pannier rack for larger diameter seat post

I have recently purchased an old, second-hand folding (or at least collapsable) bike, a Daewoo shuttle to be precise. In order to use it for commuting, I would like to fit a pannier rack onto it. It ...
  • 153
1 vote
0 answers
1k views

Folding bike rear derailleur upgrade help

Hey guys, I have the Tern Link B7 7 speed folding bike. It has 11-28T casette (you can see it in the picture) and I want to upgrade it to 14-34T one. So I bought the casette but the stock rear ...
2 votes
4 answers
6k views

Cheapest way to make 8 speed folding bike a good climber

I'm planning to buy an 8 speed Dahon Mariner D8 folding bike (2018 version). I'm going add some bike bags to it and do little bit touring so I need good climbing performance. It's a bit difficult to ...
1 vote
4 answers
855 views

How do airlines calculate the cost of a Brompton? [closed]

How do airlines calculate what to charge for a Brompton in a bag as checked luggage? I’m flying on Iberia and from their website it looks like they will charge me US$75 to take it from BOS to BCN, ...
  • 375
5 votes
1 answer
357 views

Many punctures on my 18" wheels Strida

I have a Strida with 18" wheels. Unfortunately the places I cycle seem to have lots of glass and I get a new puncture almost every week. I commute in London, so this is really unavoidable. The tires I ...
4 votes
1 answer
2k views

How to improve band brake?

I have been working on a 26" folding MTB, and its coming together slowly. The rear wheel has a band brake and for the life of me I can't get it to work well. I have no experience with this kind of ...
  • 103k
2 votes
2 answers
131 views

Citizen folding bike 3 speed - pedal slipping

My citizen folding 3 speed (gear change in hub). Slips as I pedal it. It appears the worst in gear 1. It does not do it with every revolution, but it slips frequently. How do I fix this problem?
  • 21
3 votes
2 answers
362 views

Why are folding bike warranties so short?

I am looking for an affordable folding bike with reliable warranty. So far all the bikes I looked at have 2 weeks to 3 months warranty for frame and manufacturers warranty for parts, nothing like 5 ...
3 votes
3 answers
2k views

Front fender rubbing on tire

On a 16" folding bike, the front fender slider tends to release over time and increase the distance between the tire and the fender. This is a problem because, as the fender angle changes, the end of ...