Cycling UK Forum

... I've ridden behind and studied the gearing use of people who advocate closely spaced gears and they don't shift any more often than I do. Rather than use the fine tuning as they claim, to maintain a constant cadence, what they actually seem to want this for is a closely-spaced selection of 'jus...

My modern touring bike has 3x9 gearing, 42-32-22 and the 12-36 cassette you ask about. It all works fine, giving me suitable gears for day rides and low enough ones for, for example, an unsupported tour of the Pyrenees, going over TdF cols such as the Aubisque and Tourmalet with a pair of panniers a...

... Like I said upthread, you come from the 1%, ... ... Quite the opposite. A bit cheeky! More than a bit cheeky. No manners. what a load of twaddle. ... +1 to twaddle. ... the vast majority of 'regular' cyclists who take part in Sportives and club cycling are a small subset of the vast majority of...

How about fitting a seat-stay bridge clip to the mudguard and threading a cable tie through the brake-bolt hole of the clip and round the stays. Probably best to thread the cable tie through the clip twice, once in each direction, to finish up with a symmetrical arrangement. Still a bit Heath Robins...

AIUI, tennis balls are fluffy and golf balls are dimpled to make them go faster. Its to do with separation of the boundary layer. I would find it very easy to believe that hairy legs are faster than shaved ones. OTOH, if I squandered some of my unbelievable wealth on the services of a masseuse in or...

I had bad chainsuck on a 26T steel inner on a triple (eventually found it was producing burrs where the teeth deformed slightly under pressure - even after filing them off they formed again so it wasn't a one off event). I had this too. After I filed off the burrs for the second or third time the p...

Valbrona wrote:I want four chainrings.

Old hat. Velocio built a bike with four chainrings over 100 years ago. There were two on each side, also two chains and two sprockets on each side, with gear selection by clutches.

On my elderly Roberts touring bike with a Stronglight Impact chainset I used to have a triple: 46-34-24t, but I found myself changing between outer and middle rings too often, so I removed the outer and changed the middle to a 40t (which remained aligned with the centre sprocket of my 9-speed 11-34t...

Only last weekend I fixed the front brakes on an 'Auntie' Rover 100 belonging to a friend. Braking caused a sharp pull to the right. The cause - leaking seals in the left hand caliper. You may claim that wasn't the cause but all I know is that after I fitted new seals it pulled up in a straight lin...

Only last weekend I fixed the front brakes on an 'Auntie' Rover 100 belonging to a friend. Braking caused a sharp pull to the right. The cause - leaking seals in the left hand caliper. You may claim that wasn't the cause but all I know is that after I fitted new seals it pulled up in a straight lin...

Brucey wrote:this page is useful too

https://en.wikibooks.org/wiki/Bicycles/Maintenance_and_Repair/Gear-changing_Dimensions

cheers

So it is; hadn't come across that. Thanks, Brucey.

Chris

All the information you need about freewheel and cassette spacings etc is here:
https://www.sheldonbrown.com/cribsheet-spacing.html

Getting confused again. :-) ... I am going somewhere quiet for a lie down. The CUK guide to tyre sizing is here , and Sheldon Brown has something similar. When mountain bikers started fitting fat tyres (fatter than 'C') to '700C' (i.e. ISO 622 BSD) rims they got a wheel larger than the nominal 700m...

Thanks for your take on it, Brucey.

It is worse with small chainrings; the reason is twofold, I think; 1) the chain tension is higher for any given pedal pressure (causing more rapid hooking wear) and 2) the chain wrap on the chainring is shorter. On the latter point with a 26T chainring there are only ~13 links in mesh with the chai...