Search found 3424 matches

by squeaker
19 Feb 2019, 9:59am
Forum: Bikes & Bits – Technical section
Topic: People who provided or shorten cranks in the UK?
Replies: 12
Views: 936

Re: People who provided or shorten cranks in the UK?

Brucey wrote:Mike Burrows (Mike Burrows engineering) will shorten cranks. He is in Norwich.

cheers
Cost me less than £30 IIRC for the last pair.
by squeaker
19 Feb 2019, 9:56am
Forum: Bikes & Bits – Technical section
Topic: Short Spokes Dynohub 20" wheel
Replies: 5
Views: 540

Re: Short Spokes Dynohub 20" wheel

Have built two 406 wheels with SP dynamos - spokes from SJS in both cases.
by squeaker
17 Feb 2019, 8:03am
Forum: On the road
Topic: Kent Traffic Free Routes?
Replies: 14
Views: 777

Re: Kent Traffic Free Routes?

londoncommuter0000 wrote:Does anyone know if there are places in Kent where one can do a couple of hours cycling, without any cars?
A few laps of Betteshanger Country Park? Charles Henry managed 53 in 3 hours last summer :lol:
by squeaker
14 Feb 2019, 11:06am
Forum: Non-standard, Human Powered Vehicles
Topic: Cycling for Disabled People.
Replies: 12
Views: 2325

Re: Cycling for Disabled People.

'Best' is what works for you, hence the suggestions to go and try some (or state your location: someone might be willing to let you try theirs). IME a mesh seat is easier to adjust than a hardshell to reduce pressure on painful spots / match you lumbar curve. I find a suspended 20" wheel (ICE '...
by squeaker
9 Feb 2019, 5:58pm
Forum: Bikes & Bits – Technical section
Topic: Suspension power losses/savings
Replies: 36
Views: 2443

Re: Suspension power losses/savings

atlas_shrugged wrote:I ride a recumbent (~20mph) and in winter a conventional hybrid (~15mph).
Similar wheel sizes / tyre section ? :wink:
by squeaker
9 Feb 2019, 10:51am
Forum: Campaigning & Public Policy
Topic: BMW driver walks free from court after deliberately running over cyclist
Replies: 96
Views: 4994

Re: BMW driver walks free from court after deliberately running over cyclist

Cunobelin wrote:The question we should be asking is how a person with a medical history like this was driving in the first place, and what can be done to prevent him getting back behind the wheel
Quite!
by squeaker
6 Feb 2019, 3:50pm
Forum: Bikes & Bits – Technical section
Topic: Suspension power losses/savings
Replies: 36
Views: 2443

Re: Suspension power losses/savings

Our bodies bounce badly by comparison and that is the source of Heine’s suspension losses. But how does he measure these internal losses? IIRC he inferred them by coasting downhill over rumble strips and observing the speed change vs riding on the smoother surface alongside. US-style rumble strips ...
by squeaker
6 Feb 2019, 12:45pm
Forum: Bikes & Bits – Technical section
Topic: Suspension power losses/savings
Replies: 36
Views: 2443

Re: Suspension power losses/savings

Samuel D wrote:Our bodies bounce badly by comparison and that is the source of Heine’s suspension losses.
But how does he measure these internal losses?
by squeaker
6 Feb 2019, 10:29am
Forum: Bikes & Bits – Technical section
Topic: Suspension power losses/savings
Replies: 36
Views: 2443

Re: Suspension power losses/savings

Given that the losses are in the tyres, it has to be a pretty special suspension that reduces tyre losses on relatively high frequency surface roughness eg with cyclic repetition within the tyre footprint length Which losses are you referring to here? The major energy losses in riding a bicycle on ...
by squeaker
5 Feb 2019, 9:24pm
Forum: Bikes & Bits – Technical section
Topic: Suspension power losses/savings
Replies: 36
Views: 2443

Re: Suspension power losses/savings

...We could also reduce vibration by fitting a suspension fork. ... Only for a minority of cases, IME. Given that the losses are in the tyres, it has to be a pretty special suspension that reduces tyre losses on relatively high frequency surface roughness eg with cyclic repetition within the tyre f...
by squeaker
5 Feb 2019, 8:45pm
Forum: Bikes & Bits – Technical section
Topic: Suspension power losses/savings
Replies: 36
Views: 2443

Re: Suspension power losses/savings

...We could also reduce vibration by fitting a suspension fork. ... Only for a minority of cases, IME. Given that the losses are in the tyres, it has to be a pretty special suspension that reduces tyre losses on relatively high frequency surface roughness eg with cyclic repetition within the tyre f...
by squeaker
4 Feb 2019, 10:16am
Forum: Cycling UK Topics and Discussions
Topic: New look Cycling UK clothing ... coming soon.
Replies: 12
Views: 2071

Re: New look Cycling UK clothing ... coming soon.

gaz wrote:I wonder if there will be a new heritage range?
:lol: :lol: :lol:
Sad to see Cycling UK going down the football kit path :(
by squeaker
4 Feb 2019, 10:00am
Forum: Non-standard, Human Powered Vehicles
Topic: 1x11 gearing on a bent
Replies: 35
Views: 3830

Re: 1x11 gearing on a bent

UpWrong wrote:Zach Kaplan's comments on the MD here are that it resulted in a lot of boom flex,
http://www.bentrideronline.com/messageboard/showthread.php?t=144548
Oooh, nice link. Worth looking at the onward FB link for the pix. (I'd never heard of Mitas tyres either!)
by squeaker
30 Jan 2019, 6:27pm
Forum: Campaigning & Public Policy
Topic: Every breath we take: the lifelong impact of air pollution
Replies: 581
Views: 61621

Re: Every breath we take: the lifelong impact of air pollution

https://www.youtube.com/watch?v=gguwJRrzzF8 Having watched to half way through I get the impression that the film makers are presenting the diesel bans in German cities as unreasonable panic due to reliance on incomplete science. Having watched the lot I'd go along with the 'unreasonable panic' the...
by squeaker
30 Jan 2019, 11:12am
Forum: Bikes & Bits – Technical section
Topic: Front lights again
Replies: 42
Views: 3986

Re: Front lights again

Bmblbzzz wrote:Alignment to avoid dazzle: All lights need proper set up to avoid dazzling other people! This definitely includes those which comply with Stvzo.
Indeed: especially the guy I saw a while back with 2 StVZO Lidl lights clamped on his bike's front fork legs (ie rotated through 90 degrees) :shock: