Search found 2990 matches

by CJ
23 Jan 2007, 2:47pm
Forum: Bikes & Bits – Technical section
Topic: Shimano 9sp cassette to 8sp?
Replies: 6
Views: 1032

The full answer to this and most other indexed gear questions can be found here: http://www.ctc.org.uk/desktopdefault.aspx?tabid=3946
by CJ
23 Jan 2007, 2:40pm
Forum: Bikes & Bits – Technical section
Topic: Campag 8 speed cassette wheels
Replies: 6
Views: 1241

Once you start altering the bike to use a Shimano cassette here or a different shifter there, you'll be on a slipperly slope to a whole new transmission - plus rear hub. If cost is a consideration, all you need to do is fettle the shifters (they may well need new springs as PhilC noted, but seldom n...
by CJ
23 Jan 2007, 2:22pm
Forum: Bikes & Bits – Technical section
Topic: Salmon mudguards
Replies: 6
Views: 2573

Salmon mudguards

My oppo at the FFCT (France) has to report on a very nasty wheel-jam accident involving those (French) Salmon mudguards. You know the ones: that are a strip of extruded aluminium, that look quite sexy (for mudguards) but actually weigh more and stop less spray than Chromoplastics, and most important...
by CJ
22 Jan 2007, 3:13pm
Forum: Bikes & Bits – Technical section
Topic: Damaged frame - what to do?
Replies: 8
Views: 1312

Sorry: but with that much damage it's definitely not worth repairing, especially in view of the age.
by CJ
22 Jan 2007, 12:40pm
Forum: Bikes & Bits – Technical section
Topic: Giant Halfway
Replies: 5
Views: 2388

My hunch, from the photos, is that these hubs fit to the bike just like pedals fit to a crank. Some pedals have an allen-key socket (some have only that and no spanner flats) and can be tightened/removed thus. I think it looks like these hubs may well be removable similarly, with a torx socket inste...
by CJ
19 Jan 2007, 3:12pm
Forum: Touring & Expedition
Topic: Thanks for this section
Replies: 17
Views: 5285

It seems only to be cyclists, perhaps especially those who approach the topic from a background of cycle-racing, who have a problem and tie themselves in semantic knots over the definition of cycle-touring. Forget the "cycle" bit for a moment, and all becomes clear. Touring, tourist and to...
by CJ
19 Jan 2007, 11:08am
Forum: Bikes & Bits – Technical section
Topic: Shimano 7sp hub and 8sp cassette
Replies: 3
Views: 964

Sorry, you can't. However you might be able to remove and exchange the freewheel body (although an itegral part of the hub, this is removable) for a slightly longer 8/9-speed one. Although you'll also need a new, longer axle, complete with a new right-hand cone and seal to correspond with the bearin...
by CJ
19 Jan 2007, 10:43am
Forum: Bikes & Bits – Technical section
Topic: Recumbents – a balanced argument
Replies: 48
Views: 8394

Okay, it's not really obvious. But neither is the analogy with a central heating system. The pipes in the human circulation are far from rigid and the system exchanges fluids at various points in the circuit, so it doesn't really behave like a closed system. The fairly obvious proof of this is that ...
by CJ
18 Jan 2007, 4:28pm
Forum: Bikes & Bits – Technical section
Topic: Complies with RVLR
Replies: 39
Views: 8795

... the lawyers at the Co-op legal advice centre emailed this: "Purely flashing lights are not required to conform to BS6102-3, but the flash rate must be between 60 and 240 equal flashes per minute (1-4 per second) and the luminous intensity must be at least 4 candela. (This should be advised...
by CJ
18 Jan 2007, 3:30pm
Forum: Campaigning & Public Policy
Topic: Cycle lane priority petition
Replies: 5
Views: 1525

It says they have the power, but they're reluctant to use it, for reason to do with attentiveness of motorists. The poor souls would have to look in two directions. So what about the cyclist who has to look in THREE directions at once, one of which calls for eyes in the back of the head? Government'...
by CJ
18 Jan 2007, 12:10pm
Forum: Bikes & Bits – Technical section
Topic: Recumbents – a balanced argument
Replies: 48
Views: 8394

I can think of a couple of factors that haven't been mentioned yet. The distraction of balancing This is obviously not a problem with tricycles, but recumbent bicycles are much more difficult to ride in a straight line, especially at low speed. The surprising, counter-intuitive reason for this is th...
by CJ
18 Jan 2007, 9:43am
Forum: Bikes & Bits – Technical section
Topic: Extrawheel trailer
Replies: 5
Views: 1356

I would dearly like to provide pdfs of Cycle magazine articles, to members, via the CTC website. And I've been asking for the necessary pdfs for at least five years - to no avail. If you think that this would be a useful service, all I can suggest is that you lobby your CTC councillor to demand that...
by CJ
17 Jan 2007, 3:39pm
Forum: Bikes & Bits – Technical section
Topic: Complies with RVLR
Replies: 39
Views: 8795

As that's what it says, I agree: Cat-Eye (or more likely their UK agent) has evidently misunderstood SI2559. Since the lamp has a steady mode, to gain approval it must conform with BS6102/3 when switched to that mode. I guess that Cat-Eye have assured their UK agent that this lamp does produce at le...
by CJ
16 Jan 2007, 3:57pm
Forum: Bikes & Bits – Technical section
Topic: Complies with RVLR
Replies: 39
Views: 8795

But my point is that Cateye are claiming (in writing, on the package) that the light complies with Statutory Instrument 2559 when it doesn't. SI2559 applies only to lamps with no continuous mode. They acknowledge that a supplementary BS approved lamp is required whilst using continuous mode, but no...
by CJ
16 Jan 2007, 3:27pm
Forum: Bikes & Bits – Technical section
Topic: Is this hub any good?
Replies: 4
Views: 796

The silent clutch is a sprag clutch and these are not as strong size-for-size, weight-for-weight, as a conventional ratchet. I daresay Shimano's product testing and returns experience bore this out, since this was only ever an option on low to mid quality groupsets and only for a few years. But thes...