Search found 12478 matches

by 531colin
14 Dec 2019, 6:58pm
Forum: Bikes & Bits – Technical section
Topic: How low can you go? Gears.
Replies: 15
Views: 332

Re: How low can you go? Gears.

Your chainset has bolt circle diameters of 110 and 74mm. The smallest chainring you can fit is 24T on the 74mm BCD. The smallest chainring on 110mm BCD is 34T. I run 24/34/46 because my front mech. wants a 12T difference between middle and top; I guess your front mech. wants 10t difference. So, the ...
by 531colin
13 Dec 2019, 10:49pm
Forum: Health and fitness
Topic: Flu Jab - side effects?
Replies: 112
Views: 4371

Re: Flu Jab - side effects?

You can consider bugs according to their infectiousness and their pathogenicity. When you get one that is both highly infectious and highly pathogenic you can get serious epidemics; the Spanish flu epidemic of 1918-1920 killed a lot of people, estimates vary wildly up to 100 million people worldwide...
by 531colin
13 Dec 2019, 10:35pm
Forum: Bikes & Bits – Technical section
Topic: Frameset transplant: Spa Titanium Touring
Replies: 84
Views: 2233

Re: Frameset transplant: Spa Titanium Touring

…….. With the Spa Ti Touring that is virtually impossible, the steering just immediately flops round to one side or the other and will not stay straight under any circumstances when wheeling by the saddle (except maybe when doing it down a steep ramp); this can only be corrected by MASSIVE over-cor...
by 531colin
13 Dec 2019, 6:32pm
Forum: Bikes & Bits – Technical section
Topic: Frameset transplant: Spa Titanium Touring
Replies: 84
Views: 2233

Re: Frameset transplant: Spa Titanium Touring

I'm very disappointed with those brake boss measurements. 83 is OK ish, not perfect obviously, but 293 instead of 285 is poor. My opinion of a badly off-square headtube isn't for a family friendly site. For the fork, in round numbers 20mm difference in axle to crown race seat will give about a degre...
by 531colin
13 Dec 2019, 4:40pm
Forum: Health and fitness
Topic: Flu Jab - side effects?
Replies: 112
Views: 4371

Re: Flu Jab - side effects?

I thought their jab would protect the other people? Surely it is the unvaccinated who are at risk? Google "Herd immunity" The basic premise is that some of the population are not suitable candidates for vaccination, examples include babies under 6 months and people whose immune system is ...
by 531colin
13 Dec 2019, 4:21pm
Forum: Bikes & Bits – Technical section
Topic: Frameset transplant: Spa Titanium Touring
Replies: 84
Views: 2233

Re: Frameset transplant: Spa Titanium Touring

Ouch! A catalogue of disasters. The brake bosses should be 80mm apart and 285mm above the axle slot (centres) Head tube should (obviously) be square. Can I ask if this is an (original) sandblast finished frame or the more recent brush-finish with sandblast graphics? I will bring this thread to the a...
by 531colin
12 Dec 2019, 12:33pm
Forum: Bikes & Bits – Technical section
Topic: Frameset transplant: Spa Titanium Touring
Replies: 84
Views: 2233

Re: Frameset transplant: Spa Titanium Touring

I have an Easton post at least 20 years old with the thick/thin wall feature. (and it was old stock when I bought it)
Thompson have thick/thin walls and also a "bending fuse"....but I can't see where they say those 2 features are one and the same thing.
by 531colin
12 Dec 2019, 10:00am
Forum: Bikes & Bits – Technical section
Topic: 700 to 650b conversion
Replies: 28
Views: 928

Re: 700 to 650b conversion

Lyla wrote:…..My previous one was an old folding Dahon.
I just have the feeling that I the bike is too tall when I'm on the saddle......

Could it be something as simple as you have set the saddle higher on the new bike than the old one?
by 531colin
12 Dec 2019, 9:55am
Forum: Bikes & Bits – Technical section
Topic: Frameset transplant: Spa Titanium Touring
Replies: 84
Views: 2233

Re: Frameset transplant: Spa Titanium Touring

Spot the difference?......https://www.planetx.co.uk/i/q/SPHOGS/holdsworth-gran-sport-seatpost
The PX / Holdsworth post has featured on here before....
by 531colin
11 Dec 2019, 5:54pm
Forum: Bikes & Bits – Technical section
Topic: Tightening spokes on one side of a wheel
Replies: 16
Views: 506

Re: Tightening spokes on one side of a wheel

https://forum.cyclinguk.org/viewtopic.php?f=1&t=59332&hilit=string#p501274 Go here and see how to make sure your front wheel is correctly lined up in the forks using that most wonderful tool, a piece of string. Make sure the front wheel, frame, and back wheel all line up on the road. Don't ...
by 531colin
11 Dec 2019, 5:40pm
Forum: Bikes & Bits – Technical section
Topic: Frameset transplant: Spa Titanium Touring
Replies: 84
Views: 2233

Re: Frameset transplant: Spa Titanium Touring

Re.front low-riders and all those fork braze-ons...… If you look up Tubus fitting instructions on their website (available in English) you will see that their low-riders expect to fit to the mudguard eye on the dropout. The extra eyes a couple of inches up the fork leg are for the mudguard, when the...
by 531colin
7 Dec 2019, 4:48pm
Forum: Bikes & Bits – Technical section
Topic: Different shoes, different ride. Winter footwear.
Replies: 12
Views: 454

Re: Different shoes, different ride. Winter footwear.

………. The toe of the boot is longer than the toe of my usual trainers so my feet were a bit further back on the pedals...... …….. Backs of my thighs and my buttocks were where the ache was....... I can't explain why it happens, but I can tell you what I have found out (by trying it!) 1). Moving my f...
by 531colin
7 Dec 2019, 4:23pm
Forum: Bikes & Bits – Technical section
Topic: Off road tyres for a tourer
Replies: 9
Views: 408

Re: Off road tyres for a tourer

The off-road would be muddy Chiltern chalk and clay. Nothing too challenging but likely to be very slippery with Schwalbe Marathons (the current tyres). Oddly enough the old Marathons (with a bit of Kevlar under the tread, before they "improved" them with a thick layer of stodgy rubber un...
by 531colin
3 Dec 2019, 8:48am
Forum: Bikes & Bits – Technical section
Topic: Cutting New Fork Steerer - what exactly gets included in the measurement?
Replies: 10
Views: 394

Re: Cutting New Fork Steerer - what exactly gets included in the measurement?

Assemble it.
I think its good practice to have a spacer above the stem so that you can use a different stem or headset if you want to in the future, and to be sure the top cap bears on the spacer/stem not on the steerer.
With a carbon steerer be sure the bung reinforces the correct bit of steerer.