Search found 192 matches

by Chris Jeggo
11 Jan 2021, 5:02pm
Forum: Bikes & Bits – Technical section
Topic: Sourcing Touring Wheels
Replies: 20
Views: 1213

Re: Sourcing Touring Wheels

I've had several pairs of touring wheels from Spa Cycles and they've all been good.
by Chris Jeggo
7 Jan 2021, 4:28pm
Forum: Bikes & Bits – Technical section
Topic: Chainwheel, Chain and Cassette Worn But Why Replace
Replies: 37
Views: 2052

Re: Chainwheel, Chain and Cassette Worn But Why Replace

Five years have whizzed by, but for various reasons it is only now that I have repeated my experiment of replacing a chain without replacing the sprockets, now using the current technology of cassettes and bushingless chains. I had a chain that was less than 0.2% worn at 2200 miles, but when I check...
by Chris Jeggo
7 Jan 2021, 4:05pm
Forum: Bikes & Bits – Technical section
Topic: Is my front shifter fixable?
Replies: 13
Views: 588

Re: Is my front shifter fixable?

When you took the old cable out, was there any sign of damage close to the nipple, e.g. fraying?
by Chris Jeggo
2 Jan 2021, 11:06am
Forum: Bikes & Bits – Technical section
Topic: Time to replace rim?
Replies: 42
Views: 1530

Re: Time to replace rim?

Brucey wrote:
Chris Jeggo wrote:A 'wear indicator' is either a wear non-indicator or a non-wear indicator.


depends what sort it is...?

cheers


True! I'd forgotten about the other sort.
by Chris Jeggo
2 Jan 2021, 10:49am
Forum: Bikes & Bits – Technical section
Topic: Time to replace rim?
Replies: 42
Views: 1530

Re: Time to replace rim?

A 'wear indicator' is either a wear non-indicator or a non-wear indicator.
by Chris Jeggo
25 Dec 2020, 6:29pm
Forum: Bikes & Bits – Technical section
Topic: best way to remove bearings from eccentric bottom bracket?
Replies: 32
Views: 1008

Re: best way to remove bearings from eccentric bottom bracket?

I have been trying to visualise what happens if you use two BB cup removal tools, with one in the vice and a spanner applied to the other. I think things start to come apart somewhere, but I might be missing something.
by Chris Jeggo
24 Dec 2020, 11:17am
Forum: Bikes & Bits – Technical section
Topic: Tiagra 4603 questions...
Replies: 15
Views: 492

Re: Tiagra 4603 questions...

4603 does use a larger bcd for the inner ring than 5703. As Tompsk says, 30t is the smallest that would fit Agreed. See https://www.sjscycles.co.uk/chainrings/shimano-tiagra-fc4603-92mm-bcd-5-arm-inner-chainring-d-type-silver-30t/ . There's not much metal between the bolt holes and the teeth. It wo...
by Chris Jeggo
6 Dec 2020, 1:53am
Forum: Bikes & Bits – Technical section
Topic: Airnimal chameleon vs joey
Replies: 11
Views: 382

Re: Airnimal chameleon vs joey

I have a Chameleon but have never ridden a Joey so cannot compare. One difference which may matter to you is that there is a much wider range of tyre sizes available for the Joey than the Chameleon.
by Chris Jeggo
4 Nov 2020, 11:32pm
Forum: Touring & Expedition
Topic: Analogue Navigation Device
Replies: 23
Views: 1093

Re: Analogue Navigation Device

I think it's digital. Don't you have to use fingers to turn the knobs? :lol:
by Chris Jeggo
4 Nov 2020, 4:45pm
Forum: Bikes & Bits – Technical section
Topic: Schwalbe Marathon ..significant sidewall damage evaluation
Replies: 52
Views: 1946

Re: Schwalbe Marathon ..slashed!

You should be able to see whether there is any significant structural damage, eg by flexing the tyre and peering into the cut. What the structure looks like can usually be found on the internet, e.g. cross-sections of different models of tyre from the likes of Schwalbe and Continental. For example, ...
by Chris Jeggo
24 Oct 2020, 3:15pm
Forum: Bikes & Bits – Technical section
Topic: Made to measure touring bike
Replies: 31
Views: 1332

Re: Made to measure touring bike

I am very happy with my Hewitt Cheviot SE off-the-peg tourer. It does not have the caché or fancy lugs of my Roberts or Mercian, but it rides beautifully. The Roberts has a bit of toe overlap and the Mercian chain stays are a bit short; the Hewitt is better in both respects - it is longer, of course...
by Chris Jeggo
24 Oct 2020, 2:55pm
Forum: Bikes & Bits – Technical section
Topic: Can't signal left - turn indicator?
Replies: 17
Views: 583

Re: Can't signal left - turn indicator?

They need to be bright because bikes are not expected to have them. I once was about to overtake a bike when at the last second I realised it had a dim RH indicator flashing. The rider had not looked behind.
by Chris Jeggo
29 Sep 2020, 12:29am
Forum: Bikes & Bits – Technical section
Topic: chainring question.
Replies: 6
Views: 360

Re: chainring question.

Quite right. 1/2 inch difference in circumference => 12.7mm/2pi = 2.02mm difference in radius.
by Chris Jeggo
18 Sep 2020, 9:13am
Forum: Bikes & Bits – Technical section
Topic: New tyres
Replies: 6
Views: 318

Re: New tyres

ElCani wrote:Are you sure about that tyre size? 594 is not a "26 inch" size I recognise, ....

I wondered that, too. SJS cycles list 590 and 597, two widely used sizes in that era.

See also the Cycling UK guide (based on CJ's much earlier CTC web-page) - 590 and 597, but no 594.
by Chris Jeggo
8 Sep 2020, 12:57am
Forum: Bikes & Bits – Technical section
Topic: Seat pin slippage
Replies: 30
Views: 996

Re: Seat pin slippage

I believe that it's conventional at this point to refer to The Zen Shim Question: http://www.hilarygallo.com/the-zen-shim-question/ Thank you for relieving me of the need ever to find out what that book is all about :roll: I found 'that book' fascinating, one of the few I have read three times. It ...