Search found 2142 matches

by mig
21 Feb 2020, 10:00am
Forum: Bikes & Bits – Technical section
Topic: differences in chainring BCD.
Replies: 48
Views: 1404

Re: differences in chainring BCD.

for winter fixed / 1/8th chain / good chain line.
by mig
21 Feb 2020, 9:48am
Forum: Bikes & Bits – Technical section
Topic: differences in chainring BCD.
Replies: 48
Views: 1404

Re: differences in chainring BCD.

i always wonder why those numbers though. so would a rider be able to flex a chainring of 86bcd more than say a 150 bcd? or t'other way around? or is flex more perceived than real? more to do with cutouts? or number of bolts? BB setup? sub topic. looking to buy a 144 ring and 'gebhardt' keep coming ...
by mig
20 Feb 2020, 11:15pm
Forum: Bikes & Bits – Technical section
Topic: differences in chainring BCD.
Replies: 48
Views: 1404

differences in chainring BCD.

apart from the ability to fit smaller rings are there any engineering based reasons why there are several different BCD sizes? eg why is the common track based BCD 144? does it have a certain quality about the size that is specifically applicable to the usage? or has each size just been adopted thro...
by mig
20 Feb 2020, 10:55am
Forum: Does anyone know … ?
Topic: Braking in corners
Replies: 78
Views: 3043

Re: Braking in corners

I usually try to plot my line while I'm braking before the bend, then keep my eyes on that line a short way in front of the bike all the way round, laying bike and body over at the same angle. 1.Basic rule is that you will go where your eyes go*. Your bike will be much more stable if you keep your ...
by mig
19 Feb 2020, 10:23pm
Forum: Bikes & Bits – Technical section
Topic: RX-RD5; another flawed Sturmey Archer 5s hub? -surely not....
Replies: 35
Views: 1820

Re: RX-RD5; another flawed Sturmey Archer 5s hub? -surely not....

Everything I read about hub gears on this forum puts me right off them. Even worse that Sturmey managed to engineer a reliable 3-speed hub then totally dropped the ball with anything else, and repeated the same mistakes. For the UK climate a good reliable hub gear would be ideal on a utility or com...
by mig
19 Feb 2020, 8:01pm
Forum: Does anyone know … ?
Topic: Butterfield Bicycles - Frame building Service
Replies: 3
Views: 321

Re: Butterfield Bicycles - Frame building Service

yup. if i wanted another bespoke frame then i would go there. there are some examples in the shop and i believe he's made some frames that have been badged as other makes (i'm sure many do that.) i'm comparing his with a couple of rourkes and a mercian that i own. not sure of prices though as i've n...
by mig
19 Feb 2020, 7:34pm
Forum: Does anyone know … ?
Topic: Butterfield Bicycles - Frame building Service
Replies: 3
Views: 321

Re: Butterfield Bicycles - Frame building Service

go for it. he's a great lad.
by mig
17 Feb 2020, 12:31pm
Forum: Bikes & Bits – Technical section
Topic: What is Black Sludge (rim brake question)?
Replies: 46
Views: 2063

Re: What is Black Sludge (rim brake question)?

There is into this interesting mix, to be put, the factor of the actual interface between block and rim. If the rim is smoothly polished and no metal shards are embedded in the block wear rates are very very much reduced. Such a polished rim surface can be promoted by always easing/ stopping brakin...
by mig
17 Feb 2020, 9:44am
Forum: Bikes & Bits – Technical section
Topic: Bike fitting: why? Why not?
Replies: 22
Views: 1120

Re: Bike fitting: why? Why not?

fitting for what end purpose though? a fitting to produce a bike for racing (TT even) would give a different result than if you asked for a bike you could ride loaded all day.
by mig
6 Feb 2020, 9:48am
Forum: Does anyone know … ?
Topic: Brucey
Replies: 35
Views: 2495

Re: Brucey

Phil Fouracre wrote:A very helpful guy - he hasn’t commented on this thread yet!


the software only picks up on text such as 'fatigue,' 'sturmey.' 'drum' etc etc :wink:
by mig
5 Feb 2020, 10:14pm
Forum: Does anyone know … ?
Topic: Brucey
Replies: 35
Views: 2495

Re: Brucey

Bike Related Unlimited-Content (or Bru-C) is software originally written on the ZX81 but now upgraded to the latest platforms. Book? Maybe but why not a page/articles/reviews in Cycle magazine ,time & £ permitting? Move over some of the more banal parts of that publication - it's time for some q...
by mig
4 Feb 2020, 11:26am
Forum: Does anyone know … ?
Topic: Reynolds 631
Replies: 26
Views: 1568

Re: Reynolds 631

wasn't there also an oversized tubset in 631?
by mig
31 Jan 2020, 12:42pm
Forum: Bikes & Bits – Technical section
Topic: Not another chain wear thread ...
Replies: 8
Views: 540

Re: Not another chain wear thread ...

the rear sprocket moves laterally to simulate changes in angle but it doesn't simulate the chain being pushed around by the mechs nor climbing the teeth and re-engaging a new sprocket.

$76 for a chain?
by mig
29 Jan 2020, 2:03pm
Forum: Bikes & Bits – Technical section
Topic: Saddle height
Replies: 68
Views: 3563

Re: Saddle height

old thread alert. the first inkling of a broken seat post collar this week was a feeling of being underpowered on the bike. it wasn't fatigue, it was a slipping saddle height. a crack in the collar had allowed it to slip some 5mm (over time i suppose.) i didn't really feel that odd on the bike posit...
by mig
28 Jan 2020, 3:04pm
Forum: Bikes & Bits – Technical section
Topic: Commuting wheels?
Replies: 9
Views: 584

Re: Commuting wheels?

Jamesh wrote:Anyone care to suggest some commuting wheels for a mate of mine?

Need to be a) cheap, b) reliable, c) durable

I was thinking tiagra / Mach 1?

Cheers James


pretty much any fixed hub drilled to get some grease inside. front rim - sputnik. rear rim - any.

they meet all your criteria.