Questions tagged [brompton]
Brompton is a popular brand of folding bicycle designed and manufactured in the UK.
36 questions
3
votes
0
answers
70
views
What causes the Brompton shifter to "click" between gears?
What is the mechanism that causes the shifter in a pre-2017 M6R Brompton to "click" between the two gear positions?
I have a 2015 Brompton M6R. I was touring on this bike when I hit a pot ...
- 537
0
votes
1
answer
118
views
Help! The two-speed gears on my Brompton don't shift anymore
On my 6-speed Brompton the two-speed gears suddenly stopped working. I still can operate the shifter (and the cable still seems to be under the expected tension), but the two-gear “derailleur” (chain ...
- 433
1
vote
0
answers
25
views
Where to find all Brompton literature (Manual, Schematics, etc)?
Where can I find the online library where I can download all of the public literature published for the Brompton bicycle?
Yet again, something unscrewed and fell off my Brompton bicycle when on a tour ...
- 537
3
votes
1
answer
70
views
Is play on the Schlumpf Mountain Drive chainring a problem? How to fix?
There is forward & backward play on my Schlumpf Mountain Drive chainring. Is this a problem? If so, how do I fix it?
When I hold the crank steady, there is back-and-forth play on the chainring in ...
- 537
3
votes
1
answer
155
views
What to do if new hinge clamp has no gap (brompton)
I just installed new hinge clamps on my Brompton, but there's no gap. What should I do?
It's been just under 3 years since I last replaced the hinge clamps on my 2015 Brompton M6R. I noticed that ...
- 537
2
votes
2
answers
158
views
Is a Brompton Front Wheel symmetric?
Is the front wheel of a Brompton Bicycle designed to be symmetric or asymmetric?
I have a Brompton bicycle and I need to replace the front wheel. After installing the tyre on the new front wheel, I ...
- 537
2
votes
1
answer
118
views
Should the Brompton Transit Travel Bag protect my MSL enough in the hold of an aircraft traveling in the UK?
Is the Brompton Transit Travel bag designed to protect a Brompton bike in the hold of an aircraft?
0
votes
1
answer
575
views
What happend to the Brompton "M" line?
What happened to the Brompton M-Line of bicycles?
I have a Brompton Model M6R, which (as indicated by the first letter of the model) is in the Brompton's M-Line of their bicycles. But when I checked ...
- 537
1
vote
1
answer
1k
views
What chains are OK for a Brompton?
What type of chain should I buy for my Brompton bicycle?
The chain on my Brompton bicycle is stretched, and I would like to buy a replacement. There is no Brompton dealer in my country, so I'd like to ...
- 537
8
votes
2
answers
2k
views
How to determine chain length on a Brompton?
How can I determine the correct chain length on a Brompton bicycle?
I have a Brompton bicycle with a non-standard (aftermarket upgraded) drivetrain. My chain broke and I lost some links, so I don't ...
- 537
2
votes
1
answer
140
views
Does the rear gear hub on a 6 speed Brompton needs regular servicing? How do I know when it needs replacing?
I got my Brompton second hand. I believe it was originally manufactured in 2011 and I strongly suspect it's never been properly serviced - most teeth are pretty worn and the chain is sitting on circa ...
- 121
2
votes
2
answers
2k
views
What size replacement brake pads for the Brompton?
What size brake pads are needed to replace the brake pads on a Brompton bicycle?
The brake pads on my Brompton bicycle are getting thin, and I would like to buy a replacement pair. There is no ...
- 537
5
votes
4
answers
2k
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 ...
- 51
15
votes
10
answers
7k
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 ...
- 1,025
1
vote
2
answers
506
views
Why are IGH minimum gears expressed as ratios not contigent on wheel size?
I've wondered about this before, but I'm doing a Brompton Rohloff conversion for someone and the moment has finally arrived where it's not just a theoretical issue:
Shimano and Rohloff both recommend ...
- 88.2k
2
votes
3
answers
327
views
how is the middle of a folded Brompton supported?
I have a Brompton customised by Kinetics and notice that when placed on its side the upper parts seems to be supported by:
at one end, by the frame hinge, and
in the middle (near the fork catch) by ...
- 771
2
votes
1
answer
324
views
How to remove rear wheel of old school Brompton 3-speed
I want to remove the rear wheel in order to replace the tire and tube.
How to detach the chain-tension cable on this old-school 3-speed Brompton? Does that black losenge-shaped thingie that is ...
- 1,146
1
vote
1
answer
1k
views
Brompton cable & housing replacement
What type of cables & housing should I buy to replace them on my 2016 M6R Brompton?
I've put a lot of tough miles since I bought my Brompton, and one of my shifting cables finally frayed and fell ...
- 101
3
votes
3
answers
2k
views
Brompton Rear Brake Caliper Assembly Schematic
What is the list and order of components that thread onto the Brompton's rear brake assembly from the brake caliper through to the Lower Stop Disc for an M6R?
At some point on a recent ride down ...
- 101
3
votes
1
answer
2k
views
What are the axle nut sizes on the brompton?
What are the exact specifications of the nuts used on the various axles of the Brompton bicycle?
Specifically, I have a 2016 M6R black, but I would appreciate it if you listed the specifications for ...
- 101
6
votes
1
answer
951
views
Is a brompton right for my riding style?
This question is for current OR past Brompton owners.
I am considering purchasing a Brompton because
hype about its quality built
compact
simply looks awesome!
About me: 6ft, 145lbs. (182cm and ...
2
votes
4
answers
943
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, ...
- 495
3
votes
1
answer
654
views
Older Brompton front brake cable
I needed to replace the front brake cable on my old brompton, so (after a bit of searching) ordered what I thought was the right cable (QBRCABFA-M[3] from sjs cycles). Turns out, it was the wrong one ...
- 133
1
vote
2
answers
1k
views
Seat shim dimensions for Brompton
I have seen a great seatpost online that i would like to fit to my brompton. The only trouble is that the OD is 31.6mm instead of 31.8mm.
The Brompton seat mechanism uses a plastic shim to help the ...
- 39
2
votes
1
answer
1k
views
cranks for a JIS bottom bracket
My bike is a 2016 Brompton, I am thinking to swap current cranks. Current BB possibly is this one (a JIS square taper), model: stronglight jp400 119 mm.
http://brilliantbikes.co.uk/brompton-bottom-...
- 419
2
votes
1
answer
2k
views
short cranks for new Brompton JIS bottom bracket
The bottom bracket on my new Brompton is this one (I believe):
http://www.sjscycles.co.uk/brompton-bb-cartridge-jis-for-spider-crankset-119mm-prod31207/
It is a JIS BB with 119 mm spindle length ...
- 419
4
votes
2
answers
2k
views
Tyres self-deflating after being in storage
I recently took an old Brompton bicycle out of storage after several years. The tyres were deflated (unsurprisingly) so I pumped up the inner tube to check for punctures. I couldn't find any obvious ...
- 591
3
votes
2
answers
1k
views
Brompton pump mount?
I have recently acquired a Brompton, which came with this zefal pump, which doesn't clip onto the frame:
The rear frame on my Brompton doesn't appear to have the cage-like mounts that new models have....
- 329
4
votes
3
answers
6k
views
How to safely transport a Brompton by air?
I now own a Brompton folding bike. (Fortunately, I bought my plane tickets first, as I am also now broke!)
Anyone here ever checked one into baggage in a B-bag, and suffer damage? If so, what parts ...
- 495
7
votes
5
answers
6k
views
Can I use a Brompton bike with a trailer like the Thule Chariot Cougar?
I wonder if I can use a Brompton bike with a trailer like the Thule Chariot Cougar? It uses the so called Thule Axle Mount and I wonder if it is compatible to the bike. At this point, it is just ...
- 173
1
vote
1
answer
1k
views
Brompton: where to find the higher supply of second-hand bikes in UK, or anywhere in Europe? [closed]
We are 2 french hitchhikers looking for 2 second-hands brompton folding bike (M6R, black).
We are ready to hitchhike to get them anywhere in UK, Belgium, NL or Germany for a "reasonable" price. ...
- 171
7
votes
3
answers
29k
views
Any way to transport kids on a folding bike?
I LOVE my Strida, but have noticed that the only way to transport kids with it is in a trailer, which seems to defeat the purpose of a compact bike.
I've seen a crazy expensive Brompton bar ...
- 193
5
votes
1
answer
4k
views
Service a Brompton
I think it's good time that my Brompton had a service and the main two things I'm looking at doing are:
Servicing the brakes.
Cleaning up the drive train.
What's the best way to go about these tasks ...
- 161
4
votes
6
answers
5k
views
Brompton front light recommendations?
Can anyone recommend a LED front light for Brompton (S Type) that can remain attached when the bike is folded and works well for commuting in town?
The folding causes problems in that anything ...
- 141
8
votes
2
answers
664
views
When should the metal clips be replaced on a brompton folder?
I have a brompton which is about 7 years old. Do I need to think about replacing the aluminium clips that lock the frame in place when unfolded?
- 183
12
votes
5
answers
13k
views
Replace Brompton folding pedal - what tool is needed?
I've managed to completely break the folding left-hand pedal on my Brompton. The bit where it fastens onto the crank* is fine, but the rest of it gone.
What tool(s) do I need to remove the broken ...
- 2,313