Search found 1459 matches

by axel_knutt
20 Jun 2019, 12:20am
Forum: Does anyone know … ?
Topic: What the heck is this tool for ........ cleaning
Replies: 44
Views: 1582

Re: What the heck is this tool for ........ cleaning

I love the way the Americans have got themselves into a mucking fuddle with their legal definition:
https://www.accu.co.uk/en/p/131-differe ... -and-bolts
by axel_knutt
28 May 2019, 10:20pm
Forum: On the road
Topic: Heart rate monitor
Replies: 13
Views: 619

Re: Heart rate monitor

My HRM started giving erratic readings up to 230 in 2009. By 2010 they had got to the stage where the HRM was unusable, so I stopped using it. In 2011 I bought a new HRM which was doing the same. It wasn't until 2012 that I was blue lighted into A&E and diagnosed with a heart arrhythmia.
by axel_knutt
22 May 2019, 9:30pm
Forum: Health and fitness
Topic: Gout on a bike
Replies: 17
Views: 1164

Re: Gout on a bike

robing wrote:Allopurinol is a cheap and safe drug

It killed my father.
by axel_knutt
17 May 2019, 4:27pm
Forum: Bikes & Bits – Technical section
Topic: Rims with decent braking surface thickness?
Replies: 111
Views: 7647

Re: Rims with decent braking surface thickness?

AndyA wrote:Does anyone know the thickness of a Mavic A719?


Between 1.5-1.75mm.
The rim wear indicators (when they had them) used to appear at between 1.1-1.25mm.

I get about 20,000 miles out of them with very abrasive Shimano M-55/T blocks.
by axel_knutt
25 Apr 2019, 1:33pm
Forum: Bikes & Bits – Technical section
Topic: Possibly dumb question - fixing panniers to rear Tubus rack.
Replies: 12
Views: 562

Re: Possibly dumb question - fixing panniers to rear Tubus rack.

I had the same problem with my Altura Skye panniers on that Tubus rack. The hook won't fit behind either of the vertical legs because they're spaced too far away from the pannier by the other tube, but when I tried using the rear leg it kept slipping out because the leg is too far from vertical. I h...
by axel_knutt
12 Apr 2019, 12:13pm
Forum: Campaigning & Public Policy
Topic: Painted cycle lanes may make roads more dangerous for bike riders
Replies: 117
Views: 4301

Re: Painted cycle lanes may make roads more dangerous for bike riders

Characteristics of the Regular Adult Bicycle User Kaplan. Federal Highway Administration, US, 1975. Cycle paths 292 accidents per million cycle miles, against 104 for minor roads and 111 for major roads. The Risks of Cycling Pasenen, Helsinki City Planning Department 2001 In Helsinki, using a road-...
by axel_knutt
27 Oct 2018, 11:56am
Forum: The Tea Shop
Topic: Decibels
Replies: 21
Views: 695

Re: Decibels

I sort of half remembered from O-Level days that it was logarithmic which made me assume it was more significant that it appears. One on seventy is an increase of one seventieth, but 25% of 70 seems a lot bigger. Perhaps I've got the wrong end of the stick. As sjs says it's 25% of the power, not 25...
by axel_knutt
27 Oct 2018, 11:36am
Forum: Health and fitness
Topic: Dynamo Voltage (possible) Hazard
Replies: 7
Views: 592

Re: Dynamo Voltage (possible) Hazard

So how come an electric fence shock of about 7500 volts! directly across the chest area to a fully grounded hand does not result in any long lasting damage? Because it's not 7500V. The source voltage (EMF) might be 7500V, but the loaded voltage (PD) presented to the body depends on both the load an...
by axel_knutt
20 Oct 2018, 2:11pm
Forum: The Tea Shop
Topic: Decibels
Replies: 21
Views: 695

Re: Decibels

As a student, I was taught that the smallest change most people can hear whilst present at the time is about 1dB, but if the level changes whilst they are out of the room they won't notice anything under 3dB. From this, it's both level and frequency dependent: Sound Difference.gif The Bel is just th...
by axel_knutt
14 Nov 2017, 6:28pm
Forum: Bikes & Bits – Technical section
Topic: Crimping tools for dynamo wiring
Replies: 30
Views: 1292

Re: Crimping tools for dynamo wiring

There's no point in crimp connectors at home, they're used on production lines because they are quicker and cheaper than soldering, and require lower skilled operators. In order to get a reliable joint with a weatherproof, gas-tight seal, you need a calibrated tool, a connector that that was designe...
by axel_knutt
12 Nov 2017, 5:42pm
Forum: Does anyone know … ?
Topic: Patch recommendation...
Replies: 109
Views: 6099

Re: Patch recommendation...

drossall wrote:I may be the only one, but I swear by the Weldtite strip that you cut into your own pieces. Sticks better than anything I know.

You're not the only one. I've never had any problem with it, so I've never seen the need to use anything else.
by axel_knutt
12 Nov 2017, 4:29pm
Forum: Does anyone know … ?
Topic: 50 year old newcomer
Replies: 22
Views: 1755

Re: 50 year old newcomer

I'm 6' 6", and ride a 64cm frame. It's barely big enough, there's still 5" of seatpin exposed, and I've struggled to find stems long enough on occasion.
by axel_knutt
11 Nov 2017, 1:27pm
Forum: Does anyone know … ?
Topic: Shoes For Use With Toeclips And Straps - Exustar?
Replies: 12
Views: 1148

Re: Shoes For Use With Toeclips And Straps - Exustar?

I tried a pair, but they didn't fit snugly enough over the instep. Liveable with whilst on the bike, but too much heel-lift for walking.
by axel_knutt
11 Nov 2017, 11:09am
Forum: Health and fitness
Topic: Anticoagulants
Replies: 9
Views: 794

Re: Anticoagulants

As you appear to be aware, AF increases your risk of having an ischaemic stroke, and anticoagulation reduces the risk of an ischaemic stroke at the price of increasing the risk of a haemorrhagic stroke. Making an optimum decision therefore entails comparing the risk of each. Your risk of ischaemic s...
by axel_knutt
25 Oct 2017, 4:36pm
Forum: The Tea Shop
Topic: Tell me if I'm getting old and grumpy or is the World just getting stupider??
Replies: 30
Views: 1710

Re: Tell me if I'm getting old and grumpy or is the World just getting stupider??

Many is the time I've stood and watched them fold the sticker so that half the barcode is on one side of the envelope and half on the other, rather than just position it so that the BC is all on one side. I'd like to watch them trying to scan it.