Search found 2950 matches

by CJ
26 Jan 2019, 11:07pm
Forum: Bikes & Bits – Technical section
Topic: Unscrewing presta valve after pumping
Replies: 50
Views: 4168

Re: Unscrewing presta valve after pumping

I'm not aware of the thumb lock on any of my pumps depressing the valve piston on any type I've got (Presta, Schrader or Woods - which has no piston). Surely only air pressure should open the valve? Watch this video from Topeak , how to convert a pump from schraeder to presta. When it gets to the p...
by CJ
26 Jan 2019, 10:24pm
Forum: Does anyone know … ?
Topic: 20-25 tubes in 28mm tires??
Replies: 33
Views: 3145

Re: 20-25 tubes in 28mm tires??

If using large or even oversized tubes on wider tyres at lower pressures - are you more liable to get pinch flats? My (probably wrong) logic has it that a smaller tube would be less liable. Whether the tyre gets pinched at all in the first place, is purely a matter of tyre size and pressure versus ...
by CJ
26 Jan 2019, 1:22pm
Forum: Does anyone know … ?
Topic: 20-25 tubes in 28mm tires??
Replies: 33
Views: 3145

Re: 20-25 tubes in 28mm tires??

I'm not sure puncture resistance is affected by the inner tube thickness, but editing this I see Brucey thinks it does. Me too, and neither of us (I think) are so concerned about thickness per se, as what you might call 'stretched-ness'. I don't even like to use a tube at the upper limit of its rec...
by CJ
26 Jan 2019, 1:13pm
Forum: Campaigning & Public Policy
Topic: Should cyclists be allowed to use (some) M-way hard shoulders?
Replies: 44
Views: 3534

Re: Should cyclists be allowed to use (some) M-way hard shoulders?

Of course no sensible cyclist really wants to ride on a motorway hard shoulder, but that the suggestion can even be made should focus our moral outrage upon all those general purpose roads that have gradually been 'improved' into VIRTUAL motorways - without providing anywhere else for slow traffic, ...
by CJ
25 Jan 2019, 10:52pm
Forum: Bikes & Bits – Technical section
Topic: Unscrewing presta valve after pumping
Replies: 50
Views: 4168

Re: Unscrewing presta valve after pumping

If you were to search though my posts on this subject, you will find a little nugget of mine. If you connected a Topeak Twinhead like wot I had, you'll find that each time you connect to a Presta, you lose a little bit of pressure from the tyre. Also, each time you disconnect, you lose a little pre...
by CJ
25 Jan 2019, 10:00pm
Forum: Bikes & Bits – Technical section
Topic: Unscrewing presta valve after pumping
Replies: 50
Views: 4168

Re: Unscrewing presta valve after pumping

BTW I forgot to mention; I have yet to see a really good connector chuck that has two holes side by side for presta and Schrader. I reserve a particular variety of contempt for the sort where there is a little see-saw valve inside which switches from one to the other; these are sometimes trouble fr...
by CJ
25 Jan 2019, 6:38pm
Forum: Bikes & Bits – Technical section
Topic: Unscrewing presta valve after pumping
Replies: 50
Views: 4168

Re: Unscrewing presta valve after pumping

PS; I use Lezyne pumps and they have screw-on heads and they are brilliant. Not stupid at all. I've tested but wouldn't buy a Lezyne pump. I found that (A) the screwing on and off was less convenient than the usual push on and lock, (B) the all-metal construction may be more durable (though in prac...
by CJ
22 Jan 2019, 6:33pm
Forum: Bikes & Bits – Technical section
Topic: cycle computers, generally
Replies: 19
Views: 863

Re: cycle computers, generally

Best - most reliable bike computer/altimeter I ever had is a Ciclomaster . After getting through several Avocets (each lasted about 18 months), a Cat-Eye (inaccurate altimeter), Altimeters need resetting every ride unless you have GPS IME? (as they are based on atmospheric pressure) Or are you talk...
by CJ
21 Jan 2019, 8:59pm
Forum: Bikes & Bits – Technical section
Topic: cycle computers, generally
Replies: 19
Views: 863

Re: cycle computers, generally

Best - most reliable bike computer/altimeter I ever had is a Ciclomaster . After getting through several Avocets (each lasted about 18 months), a Cat-Eye (inaccurate altimeter), and another brand I forget, I thought I'd try this German brand, so I bought (no free test sample this time because they d...
by CJ
21 Jan 2019, 7:32pm
Forum: Campaigning & Public Policy
Topic: CTC Travel Insurers Require Helmet
Replies: 39
Views: 7491

Re: CTC Travel Insurers Require Helmet

Very interesting, looks like CycleCover requires helmets and not the others. Whole point of comparison was to find (those few?) insurers who don't require a helmet and compare with CycleCover, which previously didn't, but now does. Sportscover Direct - not sure about there medical cover and repatri...
by CJ
21 Jan 2019, 7:21pm
Forum: Bikes & Bits – Technical section
Topic: Unscrewing presta valve after pumping
Replies: 50
Views: 4168

Re: Unscrewing presta valve after pumping

pumps that screw onto presta valves are (by and large) just stupid. My vote for 'best pump ever' goes to the zefal HPX I could say the same about pumps you have to hold both ends of. My vote goes to the Topeak Morph range of pumps: admittedly not as durable as a Zefal HPX, but far less effort - and...
by CJ
21 Jan 2019, 7:04pm
Forum: Touring & Expedition
Topic: Travel Insurance
Replies: 70
Views: 26250

Re: Travel Insurance

I mentioned a comparison table of insurances I've been compiling. If you're interested it's avaialble to view and download from my Google Drive as an Excel spreadsheet (with links to insurers' websites) and PNG image (for those who can't open Excel).
by CJ
21 Jan 2019, 7:03pm
Forum: Campaigning & Public Policy
Topic: CTC Travel Insurers Require Helmet
Replies: 39
Views: 7491

Re: CTC Travel Insurers Require Helmet

I mentioned a comparison table of insurances I've been compiling. If you're interested it's avaialble to view and download from my Google Drive as an Excel spreadsheet (with links to insurers' websites) and PNG image (for those who can't open Excel).
by CJ
20 Jan 2019, 6:36pm
Forum: Bikes & Bits – Technical section
Topic: Quick link: time to replace?
Replies: 27
Views: 1136

Re: Quick link: time to replace?

I use the trick of putting the link at 2 o'clock on the big ring, moving the bottom of the chain up a tooth so the link stands up and whacking one side of the link, before today I've used a large pebble for said wacking. Me too, on the road AND in the workshop. Can't see the point in buying yet ano...
by CJ
20 Jan 2019, 6:10pm
Forum: Touring & Expedition
Topic: Travel Insurance
Replies: 70
Views: 26250

Re: Travel Insurance

I've added Snowcard to the table I'm compiling. It's a good choice if you're going to extremes and want to be certain beyond any doubt that they're covered. Though I already had annual Cyclecover, I used it myself some years ago, just to be on the safe side (I even took a helmet, and sometimes wore ...