Search found 385 matches

by iow
23 Aug 2019, 8:47am
Forum: Bikes & Bits – Technical section
Topic: Gear cable sticking or what?
Replies: 26
Views: 1235

Re: Gear cable sticking or what?

One thing I am suspicious of is that the rear derailleur is sticky, and doesn't tension the chain fully for a second or two after an upshift. I had similar symptoms to the OP when the grease in the B pivot dried out. It felt ok when articulated by hand, but was less reliable under it's own spring t...
by iow
11 Aug 2019, 8:41am
Forum: Bikes & Bits – Technical section
Topic: What fork
Replies: 3
Views: 613

Re: What fork

I have the Thorn 853c forks on my Spa Audax. They're a good looking (I don't like the look of the unicrown used on the Condor's), well made, lightweight fork, but they do not offer any miraculous improvements in ride quality - the original Spa carbon/alloy forks were more compliant.
by iow
5 Aug 2019, 12:28pm
Forum: Bikes & Bits – Technical section
Topic: Non-indexed downtube shifters on 10sp
Replies: 75
Views: 2925

Re: Non-indexed downtube shifters on 10sp

Not tried 10 speed with DT shifters, but my experience with 9 speed is that both pure friction and indexed levers work well, but the 'micro-ratchets' on the Dia Compe ENE shifters are fractionally too coarse for reliable up-shifting. YMMV of course...
by iow
25 Jul 2019, 9:46am
Forum: Bikes & Bits – Technical section
Topic: Spa Audax build photos
Replies: 94
Views: 8827

Re: Spa Audax build photos

Mind you, we've had puzzles like this before. A few years back we spent ages trying to understand why the Thorn Audax frame weighs. 2.3 kg and the Spa under 2 kg. when both are supposed to be made from 0.8/0.5/0.8. What's more if anything the Thorn stays should be lighter! True. Perhaps both brands...
by iow
23 Jul 2019, 9:19am
Forum: Bikes & Bits – Technical section
Topic: Spa Audax build photos
Replies: 94
Views: 8827

Re: Spa Audax build photos

Samuel D wrote:
iow wrote:Did you weigh the new (58) frame?

As it happens, I did...

Thanks Samuel. Interesting!
Not that a few grams makes any difference to me at all - I just like to know what I'm riding...
by iow
21 Jul 2019, 8:47am
Forum: Bikes & Bits – Technical section
Topic: Spa Audax build photos
Replies: 94
Views: 8827

Re: Spa Audax build photos

I've recently built up a 54 Audax frame which weighs 58g more than a larger 56 frame which i had before (978g vs. 920g) . Are those accurate weights? They both seem on the low side to me. Sorry missed the '1' off the beginning (now edited). As to accuracy - no, not a calibrated scale, but the same ...
by iow
20 Jul 2019, 9:34am
Forum: Bikes & Bits – Technical section
Topic: Spa Audax build photos
Replies: 94
Views: 8827

Re: Spa Audax build photos

If I had to guess one way or the other, I’d say the bigger frame feels stiffer.. Did you weigh the new (58) frame? I think Spa may have changed the tubing on the 725 Audax? I've recently built up a 54 Audax frame which weighs 58g more than a larger 56 frame which i had before (1978g vs. 1920g (edit...
by iow
20 Jun 2019, 10:01am
Forum: Bikes & Bits – Technical section
Topic: Overinflating tyre to make rim explode
Replies: 13
Views: 1455

Re: Overinflating tyre to make rim explode

Depending on the geometry of the rim, an iwanson gauge may not always show the true picture.
The rim below showed c. 0.75mm (edit) when measured, but the reality was a lot less. Unbelievably it hadn't failed despite being paper thin, but I certainly got my money's worth (H Plus Son TB14)
by iow
17 Nov 2018, 9:35am
Forum: Bikes & Bits – Technical section
Topic: New wheels or rims
Replies: 10
Views: 862

Re: New wheels or rims

I've built up a couple of pairs of kinlin xr31s - rim thickness seems to compare with the archetypes. c. 1.6mm and they're just weighing in at sub 500g. they're tubeless compatible but gp4000s can be fitted by hand.
by iow
17 Nov 2018, 9:25am
Forum: Bikes & Bits – Technical section
Topic: Gilles Berthoud Aspin saddle
Replies: 4
Views: 755

Re: Gilles Berthoud Aspin saddle

Worth the investment - and i'm 'careful'!
mine has small dimples after 10k miles, maybe a little spread, but no where near the extent of an unlaced B17 after similar mileage (even a good one).
it's comfortable enough to go totally unnoticed - the mark of comfort imho.
by iow
19 Sep 2018, 1:19pm
Forum: Bikes & Bits – Technical section
Topic: worn rims; why you should be concerned and when you should be worried
Replies: 14
Views: 967

Re: worn rims; why you should be concerned and when you should be worried

Brucey wrote:Everyone knows that rims wear out .....cheers

interesting reading - thanks
by iow
17 Sep 2018, 10:04am
Forum: Bikes & Bits – Technical section
Topic: Never using an adjustable torque wrench again!
Replies: 66
Views: 3112

Re: Never using an adjustable torque wrench again!

I assume the torque spec' varies with how/if the thread has been lubed (dry, oil, grease, anti-seize etc..) is a c. 20% tolerance enough to cover this?
by iow
15 Sep 2018, 9:48am
Forum: Bikes & Bits – Technical section
Topic: Threadless headset servicing - would you bother?
Replies: 43
Views: 2014

Re: Threadless headset servicing - would you bother?

i'd want to disassemble at least once a year to check the condition of the steerer anyway, so repacking the bearings whilst it's in bits is a no brainer..
by iow
12 Sep 2018, 8:40am
Forum: Does anyone know … ?
Topic: Ebay Spa tourer: is it a scam or not?
Replies: 11
Views: 949

Re: Ebay Spa tourer: is it a scam or not?

maybe an error by one of the algorithmic ebay re-pricer tools?