Author Topic: 1.5 Sport  (Read 7936 times)

TnTkr

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Re: 1.5 Sport
« Reply #30 on: May 20, 2021, 08:07:25 AM »
 :D

Anyways, I have had some tankfuls with higher fuel consumption i.e. lower mileage, but that was in January, when we had quite cold weather (below -20 C) and some amount of idling to prevent car getting cold. Something like 7.0 l/100 km (40 mpg UK).

embee

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Re: 1.5 Sport
« Reply #31 on: May 20, 2021, 11:11:05 AM »
1 US gallon = 0.832674 imperial gallon

Fascinating when you look back into the history. According to https://en.wikipedia.org/wiki/Fluid_ounce  etc the US gallon is based on the UK (English prior to UK) wine gallon in use in various forms (and sizes) from the 14th century and made legal under Queen Anne in 1706/7. The UK then discarded the wine gallon in favour of the imperial gallon in 1824.
The US gallon is defined as 231 cubic inches apparently, and their temperature for measurement of liquids is 60F (ah yes, Fahrenheit, water freezes at 32 and boils at 212, why not?) ........

The imperial gallon now seems to be defined as 4.54609 litres exactly, and a litre is defined as ..............

Simple really.  ;D

TnTkr

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Re: 1.5 Sport
« Reply #32 on: May 20, 2021, 11:19:23 AM »
So not everything is bigger in America  :D

Downsizer

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Re: 1.5 Sport
« Reply #33 on: May 20, 2021, 03:11:30 PM »
The imperial gallon now seems to be defined as 4.54609 litres exactly, and a litre is defined as ..............
...... 1/1000 of a cubic metre, and a metre is the distance travelled by light in a vacuum in 1/299,792,458 second.  As you say, easy really!

plasma

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Re: 1.5 Sport
« Reply #34 on: May 20, 2021, 04:40:33 PM »
So not everything is bigger in America  :D


!0/10.

Plasma.

Westy36

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Re: 1.5 Sport
« Reply #35 on: May 20, 2021, 04:43:43 PM »
A wine gallon. Fascinating and sounding a bit like a challenge to me!!  :D Might need some help though.

Weird how we buy fuel in litres, but drive in miles and work out economy in MPG.

Tyre sizes are strange too, 175 mm x 65 mm x 15 inches.  Should be 175/65/381.

I only remember decimilised currency, the old system was plain bonkers!

Derkie54

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Re: 1.5 Sport
« Reply #36 on: May 20, 2021, 05:33:44 PM »
And even though we've gone to the metric system you can still buy mint imperials  :)
It will be alright in the end, if it's not alright then it's not the end !

guest4871

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Re: 1.5 Sport
« Reply #37 on: May 20, 2021, 06:15:19 PM »
A wine gallon. Fascinating and sounding a bit like a challenge to me!!  :D Might need some help though.

Weird how we buy fuel in litres, but drive in miles and work out economy in MPG.

Tyre sizes are strange too, 175 mm x 65 mm x 15 inches.  Should be 175/65/381.

I only remember decimilised currency, the old system was plain bonkers!

IIRC

Rim measure in inches is from USA/ UK from before pneumatic tyres. 

Michelin in France introduced pneumatic tyres in millimetres.

The rest is history.........

Isn't the 65 in your example the ratio of wall height to tread width and not a measurement as such?

embee

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Re: 1.5 Sport
« Reply #38 on: May 20, 2021, 09:11:49 PM »
.....and a metre is the distance travelled by light in a vacuum in 1/299,792,458 second.  As you say, easy really!
... and a second is "the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom" (at a temperature of 0 K)

It gets simpler by the moment
(and the definition of a moment is ..........)

A work colleague explained to me what a "bit" was. I imagined it was something to do with binary storage in computer memory. No.
 
"two foot eight and a bit"
All was clear.

Jocko

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Re: 1.5 Sport
« Reply #39 on: May 20, 2021, 09:24:36 PM »
My father-in-law was measuring a window so my wife could buy him curtains. He had a 3 ft joiners wooden rule. The window' width was 3 ft 21 inches.

Kremmen

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Re: 1.5 Sport
« Reply #40 on: May 21, 2021, 04:28:32 AM »
After all this time I still can't estimate in cm.

Show me anything and I can estimate it's length in feet and inches but I've no idea how many cm that would be.
Let's be careful out there !

ColinB

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Re: 1.5 Sport
« Reply #41 on: May 21, 2021, 06:35:35 AM »
After all this time I still can't estimate in cm.

Show me anything and I can estimate it's length in feet and inches but I've no idea how many cm that would be.

You’re not the only one:
https://en.m.wikipedia.org/wiki/Mars_Climate_Orbiter

“An investigation attributed the failure to a measurement mismatch between two software systems: metric units by NASA and non-metric (imperial or "English") units by spacecraft builder”

nowster

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Re: 1.5 Sport
« Reply #42 on: May 21, 2021, 11:00:11 AM »
A wine gallon. Fascinating and sounding a bit like a challenge to me!!  :D Might need some help though.

Weird how we buy fuel in litres, but drive in miles and work out economy in MPG.

Tyre sizes are strange too, 175 mm x 65 mm x 15 inches.  Should be 175/65/381.

I only remember decimalised currency, the old system was plain bonkers!

And newspaper headlines print cold weather temperatures in degrees Celsius and hot weather temperatures in degrees Fahrenheit.

Westy36

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Re: 1.5 Sport
« Reply #43 on: May 21, 2021, 04:27:50 PM »
Rim measure in inches is from USA/ UK from before pneumatic tyres. 

Michelin in France introduced pneumatic tyres in millimetres.

The rest is history.........

Isn't the 65 in your example the ratio of wall height to tread width and not a measurement as such?
Is it? I genuinely thought it was mm height. Not going outside to measure my tyres just now mind.

According to this website, you're right! I've been buying car and motorcycle tyres for 30+yrs and didn't know that! Every day is a school day.

"The aspect ratio in % (the height of the sidewall divided by the tyre's width)"

Confusing system. I prefer my idea of MM height of sidewall. Makes more sense, and I've been thinking it for 30+yrs!  ;D ;D ;D

https://www.mytyres.co.uk/Identifying.html

And newspaper headlines print cold weather temperatures in degrees Celsius and hot weather temperatures in degrees Fahrenheit.

Yeah, I hadn't noticed that! Good spot. That'll be journalists and sensationalism for you.  :D
« Last Edit: May 21, 2021, 04:29:58 PM by Westy36 »

JimSh

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Re: 1.5 Sport
« Reply #44 on: May 21, 2021, 05:44:15 PM »


I only remember decimilised currency, the old system was plain bonkers!

12d=1shilling
20shillings=£1

Yep but not  any worse than what we still work with

Metric 
10mm=1cm
1000mm=1m             
100cm=1m
1000m=1km

Imperial
12"=1ft
3ft= 1yd
1760yd=1ml
And rods chains and furlongs fit somewhere in between

Metric
1000mg=1g
1000g=1kg
1000kg=1tonne

Imperial
16oz=1lb
14lb=1st
112lb=1cwt
20cwt=1ton

We should have converted completely decades ago.
I always thought the thou (thousandth of an inch) was a strange b*stard unit.

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