1,403 reputation
514
bio website chiark.greenend.org.uk/~armb
location Cambridge, UK
age 50
visits member for 3 years, 9 months
seen yesterday

Feb
28
awarded  Yearling
Feb
18
comment Folding bike for commuting and touring
Pacific Cycles might also be worth considering, but I don't have any experience of them.
Feb
6
comment Folding bike for commuting and touring
The Friday Tikit folds in far less than 30 seconds - bikeradar.com/gear/category/bikes/folding/product/… But it's a 16" wheel bike, like the Brompton. Probably more suitable for touring than a Brompton, but also more expensive.
Feb
6
comment Folding bike for commuting and touring
Actually "folding handlebars help" is unfair to the Espresso. I have a bike built around an old Espresso frame, the current model apparently comes with a "FLATPAK" stem that swivels without tools.
Feb
5
comment Why is it common for cheap bikes to have the frame sawn in half below the saddle?
And really nasty cheap children's bikes sometimes have a similar split to look as if they have rear suspension, without bothering with even bouncy suspension with no damping.
Feb
5
answered Folding bike for commuting and touring
Feb
5
comment Conversion question
Nice - taking out and replacing links is a bit more hassle than "shift from chain ring to chain ring by hand" though. But I think what he really wants is to find out what's wrong with his derailleur-as-tensioner setup.
Jan
6
comment Are there Dynamo powered, rear flashing lights?
There's a faint chance you could find a battery powered one that still works while attached to a USB charger and charge while in use. Otherwise, what @Ӎσᶎ says, I guess. Or just live with a battery powered one, with the option of charging a spare battery off the USB port and swapping batteries from time to time.
Jan
3
comment MTB Conversion For Lighter Commuting
There are 700c touring and cross bikes with discs. If 700c wheels fit at all, keeping discs will be easier than changing to brakes the frame isn't designed for.
Jan
3
answered Can I pedal my bicycle backwards to move it backwards?
Nov
27
comment Should I get a reflective jacket/coat, or more lighting and reflective strips for the bike?
Or to put the PR thing another way: twitter.com/t1mmyb/status/405340126978375681/photo/1
Nov
19
comment What are the consequences of riding a bicycle tire backwards?
It'll work for the back if you have a flip-flop hub :-)
Nov
19
answered does anyone sell bicycle trailers with brakes?
Nov
19
comment does anyone sell bicycle trailers with brakes?
The tricky bit with a brake hose is going to be that you want to be able to split it, so you can take the trailer off.
Oct
4
comment How to remove a crank arm with stripped threads?
Or until the plastic shims crumple and break. @mikes tie rod remover is more effective. Does depend just how stuck the crank is of course.
Oct
4
comment How to remove a crank arm with stripped threads?
"Heavy duty tuning fork" type: amazon.co.uk/Draper-14159-Ball-Joint-Separator/dp/B0001K9Q2C Usable as "cotter press" type: toolbox.co.uk/draper-13914-19mm-capacity-14632-63529
Oct
4
comment How to remove a crank arm with stripped threads?
I have resorted to that sort ball joint splitter. With some cranksets it might be possible to to it without damaging the chainrings (if they are removable chainrings worth keeping, take them off), but in my case it wasn't. (Incidentally, another sort of ball joint splitter makes a usable cotter press. Not many people have cottered cranks these days though.)
Oct
4
comment How tight should a threaded BB be?
Bottom bracket designed for 73mm shell, frame with 68mm shell? Otherwise, what Daniel said. (I've only seen locknuts on cup and cone BBs, not on cartridge ones, but I haven't got an Octalink.)
Oct
4
comment Treacherous ride - top half of fork points backwards, but the bottom points forward
Are you sure the fork hasn't just been bent backwards in a crash? (The curve of the fork crown looks as if it would be wrong if you turned it round. But then I'd expect there to be some visible damage at the top if it was bent back, and I can't see any, so maybe it really is an assembly problem.)
Oct
4
comment What are the standard shifter designs and mechanisms?
Are you asking about the mechanics of how the gear changing works? Or just what different styles of shifter are available? If there former, there are two basic mechanisms, either the cable moves a derailleur (front or rear) that physically moves a chain from one sprocket to another, or (simplifying a bit) it changes which gears are engaged inside an epicyclic (mostly hub gears). There are also a very few non-electronic hub gears that change without cables, either by back-pedalling (duomatic) or mechanical speed dependent (e.g SRAM Automatix). Also the Schlumpf bottom bracket has a heel lever.