Search found 36774 matches

by Brucey
28 Feb 2020, 3:59pm
Forum: Bikes & Bits – Technical section
Topic: Diagnosing "clonk" in drive train.
Replies: 31
Views: 630

Re: Diagnosing "clonk" in drive train.

is the clonk in the OP on every pedal rev when it occurs? Yes. RHS only. If you are strongly right-legged then it still could be anything. But if you are not, this is suggestive of a problem in or near the RHS of the crank; loose chainring bolts, loose pedal, loose BB cup, that kind of thing. cheers
by Brucey
28 Feb 2020, 3:55pm
Forum: Bikes & Bits – Technical section
Topic: Diagnosing "clonk" in drive train.
Replies: 31
Views: 630

Re: Diagnosing "clonk" in drive train.

I have some brand new KMC connectors, so could swop it out. I usually use the KMCs and never had a problem with them. to check for a stiff link, get the bike in the workstand and hold the RD so that the tension on the chain is greatly reduced (i.e. so that the chain sags plenty). Then backpedal slo...
by Brucey
28 Feb 2020, 3:47pm
Forum: Bikes & Bits – Technical section
Topic: Bike gear inches and ratios.
Replies: 30
Views: 959

Re: Bike gear inches and ratios.

Back in the day my old road bikes had 52/42 chain rings and a six speed 13/24 "block". Just got on with it. 24? Lightweight ;) 12-21 Maillard block for me, with 52/42 on the front. wot no 53T chainring..?.. :shock: :wink: FWIW I often used to run a 44T inside chainring on the basis that i...
by Brucey
28 Feb 2020, 3:38pm
Forum: Does anyone know … ?
Topic: Ever ready bike light
Replies: 49
Views: 1223

Re: Ever ready bike light

I fitted low current bulbs in my setup, but even with good quality batteries they conked out pretty quickly. I only ever used that setup on the basis that I wouldn't be using the lights except in emergencies. However the nature of the lights simply turned those situations into a different type of em...
by Brucey
28 Feb 2020, 3:28pm
Forum: Does anyone know … ?
Topic: Help Identifying my bike
Replies: 14
Views: 669

Re: Help Identifying my bike

Raleigh Twenty is a good bike but it can be a lot more trouble than you might expect. Special bugbears include - the headset. There isn't a proper bearing in the top and the steerer is threaded 1" x 26pti which is now an extinct thread type. Raleigh claimed that the nasty plastic bush in the to...
by Brucey
28 Feb 2020, 3:16pm
Forum: Does anyone know … ?
Topic: Ever ready bike light
Replies: 49
Views: 1223

Re: Ever ready bike light

Re slowster's noise; I've heard that noise; I've always thought it would make a brilliant sound effect!

cheers
by Brucey
28 Feb 2020, 3:13pm
Forum: Bikes & Bits – Technical section
Topic: 35mm or 28mm tyres
Replies: 19
Views: 409

Re: 35mm or 28mm tyres

mattheus wrote:Yes - 4mm doesn't sound much, but in tyre sizes that will make a big difference in comfort.


it can also make the difference between a dangerous mudguard and not.

cheers
by Brucey
28 Feb 2020, 3:12pm
Forum: Racing, Olympics, TdF, Competitive cycling
Topic: Track world championships
Replies: 18
Views: 365

Re: Track world championships

the GB team's results in the World's have never been spectacular in an Olympic year, presumably because they are on a longer, er, cycle. However even by that benchmark this year's have been a bit worrying. In 2016 the results in the world's were a bit grim but they played an absolute blinder in Rio....
by Brucey
28 Feb 2020, 3:05pm
Forum: Bikes & Bits – Technical section
Topic: Bar mounted compass
Replies: 41
Views: 886

Re: Bar mounted compass

more recently I've had a similar device in a land rover, but it didn't come with any corrections. It seemed to work OK at first. However it turns out that the aluminium bodywork doesn't screen the magnetic field from the fat old cable running to the starter motor. The result of this is that when the...
by Brucey
28 Feb 2020, 2:57pm
Forum: Bikes & Bits – Technical section
Topic: Diagnosing "clonk" in drive train.
Replies: 31
Views: 630

Re: Diagnosing "clonk" in drive train.

My Ultegra transmission has developed an occasion clonk, the chain is a 105, 4 months old with about 1000 miles. Everything looks to be in good order, tightened to spec, clean regularly and properly lubed. My fickle finger of suspicion is presently pointing at the sram connector link i used (?) alt...
by Brucey
28 Feb 2020, 1:07pm
Forum: Bikes & Bits – Technical section
Topic: Bar mounted compass
Replies: 41
Views: 886

Re: Bar mounted compass

using search terms 'compass velcro' in ebay produces some useful results. I quite like the look of the Suunto wrist compass, but it ain't cheap. There are various alternatives which are cheaper though.

cheers
by Brucey
28 Feb 2020, 11:25am
Forum: Bikes & Bits – Technical section
Topic: Diagnosing "clonk" in drive train.
Replies: 31
Views: 630

Re: Diagnosing "clonk" in drive train.

in which case it might not be related to the recent work. I'd still double- check those things first though.

cheers
by Brucey
28 Feb 2020, 11:22am
Forum: Bikes & Bits – Technical section
Topic: Bike gear inches and ratios.
Replies: 30
Views: 959

Re: Bike gear inches and ratios.

myth or not I don't think it does any harm for a youth to use restricted gears; indeed it may help to overcome the natural tendency to mash instead of spin when they 'step up' to adult length cranks for the first time.

cheers
by Brucey
28 Feb 2020, 10:48am
Forum: Bikes & Bits – Technical section
Topic: Does angle of stem matter?
Replies: 95
Views: 2544

Re: Does angle of stem matter?

Image01605.jpg above is a photo of a spare bung I have kicking around. It is made in three pieces, so the entire upper section is a 'bolt'. The lower part has a wedging action and the upper contacts the expanding split collar on a flat interface. An advantage of this design (over one with a separat...
by Brucey
28 Feb 2020, 10:02am
Forum: Bikes & Bits – Technical section
Topic: Tour de fer 20
Replies: 5
Views: 157

Re: Tour de fer 20

Image

you could (instead of replacing the stays) make a small bracket to take the place of the rack when the rack is not fitted?

cheers