Search found 170 matches

by Punk_shore
5 Feb 2019, 2:08pm
Forum: Bikes & Bits – Technical section
Topic: brinelling
Replies: 11
Views: 1514

brinelling

The front wheel, when turning, has a flywheel effect. Similarly, so does the back wheel. Each wheel "wobbles" relative to the other. This is known as gyroscopic precession. Front/ rear axle(s) could thus move about the steering head. Would this contribute towards brinelling (pitting) of th...
by Punk_shore
10 Jul 2018, 4:50pm
Forum: Campaigning & Public Policy
Topic: What can we do to encourage more women to cycle?
Replies: 358
Views: 41468

Re: What can we do to encourage more women to cycle?

Some good points there :lol:

I was surprised, when paying for a Global Positioning System land survey of my drive, that the datum (height reference) was not recorded.
by Punk_shore
12 Jun 2018, 3:08pm
Forum: Campaigning & Public Policy
Topic: What can we do to encourage more women to cycle?
Replies: 358
Views: 41468

Re: What can we do to encourage more women to cycle?

There are many strands to this scenario. For whatever reason, having a decent car seems to be as important to some people as living in a nice place. Although I do see unaccompanied female cyclists riding through my town, I also get fed up with people telling me I should ride more myself. Isn't it en...
by Punk_shore
6 Sep 2014, 7:12pm
Forum: The Tea Shop
Topic: steering head bearing sizes?
Replies: 1
Views: 1083

steering head bearing sizes?

Hi all, I've been trying to find out about steering head bearing sizes, from various cycle shops. To some extent, this depends on what sizes they have in stock. Then we get questions about what's it for - threaded or threadless etc. Now I gather that the biggest diameter steerer tubes (the ones that...
by Punk_shore
16 Aug 2014, 2:54pm
Forum: Bikes & Bits – Technical section
Topic: How bicycle steering works ( discussion )
Replies: 38
Views: 126431

Re: How bicycle steering works ( discussion )

Thanks guys. If anyone is interested in taking the design (as opposed to the discussion) forwards, please let me know.

Happy cycling, Punk_shore :wink:
by Punk_shore
19 Jul 2014, 11:55am
Forum: The Tea Shop
Topic: spur gears
Replies: 2
Views: 1512

spur gears

Hi TeaShoppers,

I've put this question in here as I'm not an engineer (only a technologist). Does anyone know of a company which manufactures spur gears please?

We're talking about the sort of things found inside a traditional 3-speed hub.

Much obliged for your help, Punk_shore
by Punk_shore
18 Feb 2014, 4:13pm
Forum: The Tea Shop
Topic: Good home wanted
Replies: 3
Views: 16961

Good home wanted

Sadly, it has come to the time when a bike needs to leave the garage. This is to make room for a newer model. Now the thing about this road-bike is that it's a bit different. It was built as a prototype and was tested successfully. It's a prime example of building something out of bits and pieces, t...
by Punk_shore
2 Feb 2013, 4:35pm
Forum: The Tea Shop
Topic: Intuition
Replies: 2
Views: 396

Intuition

Found myself doing something the other day, without thinking about it. Needed to head towards the kerb again, having ridden around a pothole. As well as the usual hands/ shoulder thing, I just knocked the front of the crossbar over a bit, by catching it with the inside of my right knee. Now this was...
by Punk_shore
29 Jan 2013, 12:34pm
Forum: The Tea Shop
Topic: Encouraging designers?
Replies: 5
Views: 323

Re: Encouraging designers?

Yes Tony,

As stated to me by British Cycling (sporting body), they are: celebral palsy, autism and candidates for the Special Olympics (e.g. with learning difficulties).

:D Punk_shore
by Punk_shore
29 Jan 2013, 12:16pm
Forum: The Tea Shop
Topic: Encouraging designers?
Replies: 5
Views: 323

Encouraging designers?

How can designers be encouraged to make cycles easier to use, please? :idea:

There are potential riders who, for medical reasons, are challenged to ride current designs of cycle. :?
by Punk_shore
16 Jan 2013, 11:42am
Forum: Does anyone know … ?
Topic: Is a bicycle database worth while?
Replies: 6
Views: 933

Re: Is a bicycle database worth while?

nappy501 - having sold a few secondhand bikes privately, there is often a ceiling price they can be advertised for. Supposing that price is £25, it would only cover a few (secondhand) replacement parts and remedy of obvious defects. What I'm saying is that if you want a bike with new saddle and tyre...
by Punk_shore
13 Jan 2013, 1:16pm
Forum: The Tea Shop
Topic: Drunk in charge... ?
Replies: 18
Views: 1034

Drunk in charge... ?

It's nice and warm in the tea shop, compared with outside. I understand it can be an offence to be drunk in charge of a bicycle. I also understand that it can be an offence to be over an alcohol limit when driving or riding a motor vehicle. Does anyone know if there is a specified breath or blood al...
by Punk_shore
15 Dec 2012, 4:17pm
Forum: The Tea Shop
Topic: carbon fibre
Replies: 6
Views: 586

Re: carbon fibre

Thanks cycleruk,

That's all I need to know. My bike has a steel frame & forks, with old-style steerer tube and unsealed bearings!

Kind regards, Punk_shore
by Punk_shore
15 Dec 2012, 2:56pm
Forum: The Tea Shop
Topic: carbon fibre
Replies: 6
Views: 586

Re: carbon fibre

Hi cycleruk,

Are the tracks of the headset bearings bonded into the carbon fibre? Or are they just an interference fit :?:

Kind regards, Punk_shore
by Punk_shore
14 Dec 2012, 4:21pm
Forum: The Tea Shop
Topic: carbon fibre
Replies: 6
Views: 586

Re: carbon fibre

Hi Bob, Thanks for your message. Why - because carbon fibre frames are in vogue at the moment. Where - at the steering head. What conditions - the typical British climate enjoyed when out on a ride. Cleaning off with a pressure washer and storing in a damp shed. :( Hope this helps you. Punk_shore