Search found 2970 matches

by CJ
18 Jun 2019, 7:28pm
Forum: Campaigning & Public Policy
Topic: Father calls for cycle ban(after son's death)
Replies: 22
Views: 967

Re: Father calls for cycle ban(after son's death)

The A338 looks to be one of those motorway-in-all-but-name roads, about which I'd usually be quite happy with a cycling ban, since it's completely additional to the pre-existing road network and doesn't provide unique access to any adjacent premises. You can take it off the map and I can still cycle...
by CJ
18 Jun 2019, 6:39pm
Forum: Bikes & Bits – Technical section
Topic: Simple guide to worn rear cassette
Replies: 38
Views: 1820

Re: Simple guide to worn rear cassette

...if you want to find such link for a bicycle chain, 'half link' is the term that is likely to be most productive when searching the interweb. Thank you for inviting me to the Humpty Dumpty world ("when I use a word, it means just what I choose it to mean") of BMX! Common use of the term...
by CJ
17 Jun 2019, 5:07pm
Forum: Bikes & Bits – Technical section
Topic: Twisting v brakes
Replies: 2
Views: 154

Re: Twisting v brakes

I think you mean pliers and my answer is maybe. The noodle 'stirrup' will surely be weaker after the forcing open and probably remain somewhat distorted after pinching together again, so the addition of a zip-tie will help to keep the noodle aligned correctly. BUT a brake is a safety-critical compon...
by CJ
17 Jun 2019, 4:53pm
Forum: Bikes & Bits – Technical section
Topic: Simple guide to worn rear cassette
Replies: 38
Views: 1820

Re: Simple guide to worn rear cassette

I shall still not be sure what folk mean when they say 'just take a link out of the chain'... Oh come off it, they obviously don't mean anything more precise than when they say "I'll just take a bite out of this pie". If they thought about it they'd say two links, and if challenged with: ...
by CJ
17 Jun 2019, 11:56am
Forum: Bikes & Bits – Technical section
Topic: Simple guide to worn rear cassette
Replies: 38
Views: 1820

Re: Simple guide to worn rear cassette

https://i4.tfb.me/prodImgs/TFB10_CH1009.jpg links, half-links... bound to be confusion... :wink: Thanks for the understanding wink - and for providing a nice illustration of why to minimise confusion, we must stick to calling the element of chain connecting two pivots one whole LINK, never mind if ...
by CJ
12 Jun 2019, 11:06pm
Forum: Bikes & Bits – Technical section
Topic: Simple guide to worn rear cassette
Replies: 38
Views: 1820

Re: Simple guide to worn rear cassette

IIRC the rollers on any one inner half-link (IHL) don't quite stay the same distance apart when pushed in the same direction; the reason for this is that the half bushings which support the rollers also wear unevenly. The extent to which this occurs seems to vary with the chain and the usage condit...
by CJ
11 Jun 2019, 7:11pm
Forum: Bikes & Bits – Technical section
Topic: Simple guide to worn rear cassette
Replies: 38
Views: 1820

Re: Simple guide to worn rear cassette

if anything, the Park Tool CC1 has to be the least tool to use: apart from taking a measurement of only 7 pins (IIRC) vs the 11 pins used by the CC2.2, the reading dial moves on a bolt that is bound to have a noticeable play, which in turn can give a more pronounced error of the effective wear. I h...
by CJ
1 Jun 2019, 6:31pm
Forum: Touring & Expedition
Topic: CTC Bike bags: Dublin airport and Ryanair
Replies: 7
Views: 444

Re: CTC Bike bags: Dublin airport and Ryanair

Surprisingly Ryanair just confirmed in writing that the CTC bag is OK... Did they really. I find that very surprising. They refused to accept my plastic CTC bag on returning from Charleroi last year. Refused point blank even took me the other side of the counter where they had a picture with plasti...
by CJ
27 May 2019, 5:03pm
Forum: Bikes & Bits – Technical section
Topic: Rusty bolts and aluminium fittings...
Replies: 25
Views: 1166

Re: Rusty bolts and aluminium fittings...

Hundreds of SKS mudguards go through my hands every year... SNIP ...Never seen a rivet to fail due to corrosion... I'm not making this up - check with those who have a bit more experience, such as thirdcrank and Brucey . And as my experience shows, mudguards don't have to be yet another disposable ...
by CJ
27 May 2019, 4:25pm
Forum: Bikes & Bits – Technical section
Topic: Simple guide to worn rear cassette
Replies: 38
Views: 1820

Re: Simple guide to worn rear cassette

Have come across a few folk gatto who change at 0.5 per cent but am puzzled. If that is good practice why do chain checkers commonly have just 0.75 and 1 per cent markers? My KMC checker just has a single marker 0.8 per cent. I tend to change chains at 0.75 per cent, hope for the best on the chainr...
by CJ
26 May 2019, 3:56pm
Forum: Bikes & Bits – Technical section
Topic: Rusty bolts and aluminium fittings...
Replies: 25
Views: 1166

Re: Rusty bolts and aluminium fittings...

Hi If the bolt is stainless steel that is, by the way, very bad for corrosion of the alloy, because chrome and aluminium are a long way apart in the electrochemical series The electrochemical series is an indicator of risk and needs to be looked at in specific situations, which interests me on a pr...
by CJ
26 May 2019, 1:24pm
Forum: Bikes & Bits – Technical section
Topic: Simple guide to worn rear cassette
Replies: 38
Views: 1820

Re: Simple guide to worn rear cassette

If you get 3 chains @ 0.5% to 1 cassette, rather than 1 chain @ 1% to 1 cassette, then for the same (3%) cumulative chain wear the equation is 2 (3 Cn + S ) < 3 ( Cn + Cs ) i.e. Cs > 3 Cn So in that case the cassette needs to cost more than 3 times as much as the chain to justify changing the chain...
by CJ
25 May 2019, 5:03pm
Forum: Touring & Expedition
Topic: easyjet NOT accepting poly bags May 2019 (Maybe?)
Replies: 14
Views: 1026

Re: easyjet NOT accepting poly bags May 2019 (Maybe?)

Last year on our return from Kalamata by EasyJet on a group booking for 17, all with bikes, the staff were most delighted to receive bikes packaged in clear polythene. This was on account of Kalamata's small airport's X-ray scanner being too small to swallow anything bigger than a regular suitcase. ...
by CJ
18 Apr 2019, 8:43pm
Forum: Bikes & Bits – Technical section
Topic: Simple guide to worn rear cassette
Replies: 38
Views: 1820

Re: Simple guide to worn rear cassette

FWIW there is a tool which is sold for this purpose; the Rohloff HG/IG checker https://cdn.hibike.com/image/product/WRZ/WRZ_RoCEK-il.png the idea is if you lean on the handle, and see if the last link engages easily with any given sprocket or not, you can assess if the sprocket is so badly worn tha...
by CJ
18 Apr 2019, 8:35pm
Forum: Bikes & Bits – Technical section
Topic: Rusty bolts and aluminium fittings...
Replies: 25
Views: 1166

Re: Rusty bolts and aluminium fittings...

Grease is a mixture of oil and soap. When mixed, the soap forms a stringy sponge that contains the oil and when squeezed, lets a bit out to do its lubricating job. When all the oil is squeezed and/or evaporates out of grease, the now dry soap is free to absorb water and react with the metals it's in...