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31 votes

Big dent on frame: How did this damage happen?

It seems that this dent belongs in the bike. Here is a photo of a similar bike. While image is of low quality, the dent is visible: However, as pointed out by Lamar Latrell in comments, in your ...
jpa's user avatar
  • 1,857
29 votes
Accepted

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

I have ridden bikes with different sizes of wheels, from 29" MTB/622 Road wheels, through 20" folder, 12" scooters, and one folding A-bike with 6" wheels. My perception is that ...
Criggie's user avatar
  • 125k
21 votes

Big dent on frame: How did this damage happen?

If it is damage then no one here can say for sure how it happened. However, it's in the realm of impossible-ish for a dent that severe to happen without paint damage or a clear mark in the paint ...
Nathan Knutson's user avatar
20 votes

Front V-brake not working

The 'noodle' (the curved silver tube the brake cable passes through) has slipped through the holder on the right-hand (in your picture) brake caliper. The noodle is designed to come out of the holder ...
Argenti Apparatus's user avatar
19 votes
Accepted

Are all folding pedals a bit... bendy?

Yes, I've used a variety of folding pedals on my Dahon and Brompton and they're all a bit flexy. I've had plastic ones snap in half on me (and yes, that can be very painful/dangerous). The best ones I'...
RoboKaren's user avatar
  • 29.2k
16 votes

Big dent on frame: How did this damage happen?

I think you'll find that the handlebar 'stem' folds to the left, and will line up with the dent when folded. If the dent is not supposed to be there, my best guess is that the handlebar was folded ...
Argenti Apparatus's user avatar
15 votes

Bicycle weight limit (carrying capacity) increase

On a non-folding bike, I'd look at the wheels, and probably replace them with 36 spoke touring wheels and reasonably wide, tough tyres (e.g. 35mm). The tyres absorb some of the shock loads. However a ...
Chris H's user avatar
  • 59.7k
13 votes
Accepted

Why do folding bikes usually have MTB components?

Great question! I think the market drives this -- not necessarily just the folding bike market, but the component market. Mountain bikes have been the predominant type of bicycle for the past ...
RoboKaren's user avatar
  • 29.2k
11 votes

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

I cycle round a city (Chester) every day, typically covering five to ten miles in a trip. Even though this is on allegedly high quality roads the reality is that there are a lot of potholes and other ...
John Rennie's user avatar
10 votes
Accepted

Tern Spartan (front rack) on Bike Friday NWT

Yes, a Tern Spartan Front Rack does fit on a BikeFriday New World Tourist (and also the Tern Cargo rear rack): To prevent the rack from interfering with the V-brakes I mounted the upper end of the ...
Stücke's user avatar
  • 1,508
9 votes
Accepted

Bicycle weight limit (carrying capacity) increase

tl;dr: if you want a sturdy folding ebike, you need to have a sturdy folding bike. Even if the bicycle statically/dinamically can stand more than the declared weight (at your own risk), the (expected)...
EarlGrey's user avatar
  • 3,700
9 votes

Why are folding fat-tire bikes all-electric?

My assumption would be that the people who buy this kind of bikes are interested in casual cycling or commuting and not in technical riding. As you wrote, folding bikes are heavier, very large tires ...
Rеnаud's user avatar
  • 20.6k
8 votes
Accepted

What are these cable "unions" called

Not sure if there is a tradition term for these. At the time of writing I found Some products simply called cable splitters or separators and Ritchey quick disconnectors
Argenti Apparatus's user avatar
8 votes

Fiido D2: shock absorber broken

Your best bet would be to contact the manufacturer for specifications or even replacement parts. Failing that, your next best thing should be to measure/learn parameters of your current shock, and ...
Grigory Rechistov's user avatar
8 votes

Front V-brake not working

A further thing to watch out for when following Argenti's (correct) advice: Check the end of the noodle holder very carefully. I've seen some old, cheap V brakes in which this was too soft and ...
Chris H's user avatar
  • 59.7k
8 votes

Consultation needed! To repair or throw out?

Based on the photos you might not need any parts at all. The chain looks pretty awful, and is likely siezed up, but a good clean is required to see if it needs replacing. I've had some ugly chains ...
Criggie's user avatar
  • 125k
7 votes

Why do folding bikes usually have MTB components?

Road-bike specific components are designed for weight not strength. MTBs are expected to survive rougher handling. Although folding bikes don't want to be heavy, they need to be tough, often getting ...
Chris H's user avatar
  • 59.7k
7 votes

Gravel + Folding Bike

a gravel focused folding bike that doesn't compromise on portability? All bicycles are a study in compromise. Here are three examples of the many different approaches to the portability requirement. ...
David D's user avatar
  • 21.6k
6 votes

Milian Pere - Brompton child seat - installation instructions

Assuming your son will be sitting on a saddle then you need a saddle with a metal clip that interfaces between the rails of the saddle and the post. They are adjustable so the seat can be almost any ...
KeithWM's user avatar
  • 736
6 votes

Cheapest way to make 8 speed folding bike a good climber

I've done something similar with a 6 speed bike (42 tooth chainring, and 14-28 rear. Its now a 48/38/28 with an 8 speed 11-32 cassette, so the lowest climbing gear is 15.4 gear-inches. A folding ...
Criggie's user avatar
  • 125k
6 votes
Accepted

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

There are at least four factors involved: 1. Tire pressure The thinner the tire, the higher pressure it requires, and the higher pressures it can handle. More pressure means less deformation, and less ...
cmaster - reinstate monica's user avatar
6 votes

Big dent on frame: How did this damage happen?

I have the same (model) bike and it has the same 'dent'. If you undo the front lock (to fold the stem / handlebars etc down), the stem fits / lines up perfectly into the 'dent'. I have no doubt that ...
Jon's user avatar
  • 61
6 votes

Type of permitted folding bikes on London trains & Tube?

Some UK rail companies, such as GWR (who operate some local trains in West London as well as mainline services) only consider bikes to be folding if the wheels are up to 20". Folding bikes with a ...
Chris H's user avatar
  • 59.7k
6 votes

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

There are a few possibilities: The culprit is still stuck in the tire. Carefully check for any glass shards, pieces of wire, thorns etc. Something is sticking out of the rim. Check if the rim tape is ...
Michael's user avatar
  • 27.8k
6 votes

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

I can easily bring it up the stairs even without folding it or really quickly lift it from the frame to get across complicated obstacles on the road (say up a curb or past construction work areas). ...
juhist's user avatar
  • 19.1k
6 votes

Seat post keeps sliding down after cleaning and lubricating folding bike

This page from an Australian Brompton retailer suggests 3 options (you've probably tried the 2 first ones): cleaning the seatpost and the tube with isopropyl alcohol. tighten the clamp (by one ...
Rеnаud's user avatar
  • 20.6k
6 votes

Gravel + Folding Bike

Something like Tern Bicycles' Verge 8i looks like it could be a good, stable and flexible platform for a gravel/bikepacking build: Tire selection might be a limitation with 20" wheels, and the ...
SamA's user avatar
  • 2,696
5 votes
Accepted

V-brake noodle broken: replace immediately? With what?

A noodle is totally cheap, and you should replace this immediately even if the brake appears to be working. Dragging the inner around a sharp bend will fray the strands, leading to a sudden failure ...
Criggie's user avatar
  • 125k
5 votes

Why do folding bikes usually have MTB components?

Road bikes have short rear derailleurs which are incompatible with a cassette that offers a wide range of gears (like 12T to 30T in 10 steps) - they are designed to offer smaller steps over a narrower ...
Christian Lindig's user avatar
5 votes
Accepted

JIS and ISO square taper

Does whether the bike folds have anything at all to do with this compatibility between BB and crank? Executive summary: NO! Longer answer: Here's the Sheldon Brown link: https://www.sheldonbrown....
Andrew Henle's user avatar
  • 10.6k

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