Search found 1788 matches

by whoof
15 Sep 2019, 8:44pm
Forum: Bikes & Bits – Technical section
Topic: Lightest Steel Bike 5.5 Kilo's
Replies: 55
Views: 1608

Re: Lightest Steel Bike 5.5 Kilo's

A ship of 50,000 tonnes dead weight floats on the sea. The buoyancy keeps it at equilibrium and it weighs nothing. Try and lift it out slowly, and the weight increases slowly too as it is lifted, and up to a maximum of 50,000 tonnes as it comes right out. Mass and weight are two different things. M...
by whoof
15 Sep 2019, 7:39pm
Forum: Bikes & Bits – Technical section
Topic: Lightest Steel Bike 5.5 Kilo's
Replies: 55
Views: 1608

Re: Lightest Steel Bike 5.5 Kilo's

Something that floats, has no weight. If it's pushed under water, it then has negative weight and rushes upwards when released. If lifted out of the water, it then has positive weight. Helium rushes upwards through the atmosphere as it has negative weight, and no doubt "floats" on high to...
by whoof
14 Sep 2019, 9:44pm
Forum: Bikes & Bits – Technical section
Topic: Lightest Steel Bike 5.5 Kilo's
Replies: 55
Views: 1608

Re: Lightest Steel Bike 5.5 Kilo's

NATURAL ANKLING wrote:Hi,
For floating objects, Upthrust equals ?

Buoyancy,(upthrust) the upward force exerted by a fluid that opposes the weight of an immersed object. Back to weight again!
by whoof
14 Sep 2019, 7:36pm
Forum: Bikes & Bits – Technical section
Topic: Lightest Steel Bike 5.5 Kilo's
Replies: 55
Views: 1608

Re: Lightest Steel Bike 5.5 Kilo's

Wood floats but doesn't have negative weight. It's all to do with density, not weight. Density is weight per unit volume. It's therefore to do with weight. The volume of a filled tyre is the same whether it's filled with He or air. As He has a lower density it will therefore weigh less, it does not...
by whoof
14 Sep 2019, 7:30pm
Forum: Bikes & Bits – Technical section
Topic: Lightest Steel Bike 5.5 Kilo's
Replies: 55
Views: 1608

Re: Lightest Steel Bike 5.5 Kilo's

fastpedaller wrote:Strangely I was wondering a few days ago whether anyone has put very light equipment on a steel frame, and thus (if the steel frame weighs,say, 1kg more than a carbon frame, ended up with a very light bike. And now it's reality :D

Can you wonder about a good outcome to Brexit?
by whoof
14 Sep 2019, 7:06pm
Forum: Bikes & Bits – Technical section
Topic: Lightest Steel Bike 5.5 Kilo's
Replies: 55
Views: 1608

Re: Lightest Steel Bike 5.5 Kilo's

You cannot compress a liquid. Hydraulics wouldn't work if you could. You can compress it by dint of any dissolved gasses contained within though. Wood floats on water but wood doesn't have a negative weight, it's just lighter for a given edit volume. Nothing to do with weight. Wooden ships can weig...
by whoof
14 Sep 2019, 4:37pm
Forum: Touring & Expedition
Topic: The Wonders of Touring, not?
Replies: 3
Views: 472

Re: The Wonders of Touring, not?

Spain is a great place to go cycle touring. The weather on the whole is so much better than the UK.
by whoof
14 Sep 2019, 4:25pm
Forum: Bikes & Bits – Technical section
Topic: Lightest Steel Bike 5.5 Kilo's
Replies: 55
Views: 1608

Re: Lightest Steel Bike 5.5 Kilo's

I'm not a physicist, but as I understand it, helium has a negative weight. I suppose if you compress it a lot, it could have a positive weight. After all, liquid helium is - well - a liquid and therefore has weight. Air (29g/mol) is approximately 7 times heavier than (4g/mol) helium. Wood floats on...
by whoof
10 Sep 2019, 12:35pm
Forum: On the road
Topic: Not all cyclists are perfect! (head butt pedestrian)
Replies: 34
Views: 1252

Re: Not all cyclists are perfect!

If riding a bike resulted in perfection as offenders left prison you could chain them to a bike and pretty soon there would be near zero crime.
by whoof
10 Sep 2019, 12:32pm
Forum: Touring & Expedition
Topic: Bordeaux to Chamonix...thoughts
Replies: 13
Views: 712

Re: Bordeaux to Chamonix...thoughts

Late reply! Now 10 days into cycle! Eventually decided on Bordeaux to Sete to Aiges Norte to Arles , up Rhône valley , turn right to Chamonix What I’ve learnt so far ... arrived Bordeaux with bikes in box’s. Booking. Com has been first class re accomadation. About £65/ nite double with bnb. Great q...
by whoof
8 Sep 2019, 11:21am
Forum: Health and fitness
Topic: Hot weather fluid consumption
Replies: 12
Views: 389

Re: Hot weather fluid consumption

One person's hot weather is a another's lovely day. I would take 30 degrees all day long and have never avoided 'the heat of the day'. Similarly, everyone's fluid intake needs are different, I know people who start sweating like a Sumo wrestler in sauna just looking at a bike. Dehydration is dangero...
by whoof
7 Sep 2019, 6:31pm
Forum: On the road
Topic: 2019 - Twenty a day?
Replies: 32
Views: 11208

Re: 2019 - Twenty a day?

August was a little short at 875 miles. 7583 for the year to date or 31.2 per day. Expect September too be higher as it will include a trip to Majorca.
by whoof
7 Sep 2019, 11:52am
Forum: Health and fitness
Topic: New advice on adding strength training
Replies: 1
Views: 305

New advice on adding strength training

Chief medical officer now advising doing some form of strength training twice a week in addition to aerobic exercise. https://www.bbc.co.uk/news/health-49609597 I regularly duo some press ups, sit ups together with dead lift and squats. Nothing heavy (~35 kg), doesn't take very long or require gym m...
by whoof
7 Sep 2019, 11:39am
Forum: On the road
Topic: Keep outwith the Door Zone!
Replies: 8
Views: 715

Re: Keep outwith the Door Zone!

What happened to the dog?
by whoof
5 Sep 2019, 7:51pm
Forum: Does anyone know … ?
Topic: Bike security
Replies: 30
Views: 1530

Re: Bike security

Playing devil's advocate. If one was to change a few words in the OP, it could then refer to me wanting to take my bike into my hotel room. Bike not safe outside overnight; valuable bike; lock not adequate; etc. I have regularly 'battled' with hotel staff when insisting that I have my bike somewher...