Things you always wanted to know the answer to [Vol. 4]

Things you always wanted to know the answer to [Vol. 4]

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EddyBee

241 posts

167 months

Friday 22nd February 2019
quotequote all
Dr Jekyll said:
48k said:
Who refers to a Boeing 777 as a "seven seventy-seven" ???
I've heard people refer to the 'seven forty seven'.
Also everyone seemed to refer to the BAC 'one eleven', never to the BAC one one one (or to the General dynamics F one one one or Porsche nine one one), Also it was 'Boeing seven twenty' not 'seven two zero'.
I’ve worked on aircraft with a few Americans and they pronounce them different to us (British).
We call a B757 a Seven Five Seven, they call it a Seven Fifty Seven, same goes for a 737, 747 etc.

However at work we shorten the names so we’d say “I’ll go and fix the Seven five tonight”
Where as the Americans would shorten it to five seven (again the same for the 737 etc)

Both call the B777 the triple seven or “the triple”
Airbus we’re the same A320 Three twenty, A321 Three twenty one.


Roofless Toothless

5,612 posts

131 months

Friday 22nd February 2019
quotequote all
droopsnoot said:
OK, thanks. I suspect it's not going to be possible if they can't be stacked, for size reasons. I figured stacking would be an issue because of the holes.

The ones I'm using all seem to have a break half-way through, sometimes just for a rest, sometimes for a stir.

Cheers all.
I suppose it's my age, but I find I often have to stop for a rest half way though. Sometimes I don't even bother starting.

EddyBee

241 posts

167 months

Friday 22nd February 2019
quotequote all
I’ve got one;

Why do lorries and tugs etc use air brakes?
Most conventional brakes use hydraulics.

Diggers use hydraulic rams for moving buckets and the likes.
Obviously with normal car brakes when you release the pedal there’s no pressure so the piston retracts slightly due to the piston seals. Then with diggers you need a way of operating rams in the other direction/a return line.

Is it simply because you’d need some sort of hydraulic pump for the pressures involved? Also you’d need a return line/off loading circuit for the fluid because you couldn’t rely on the retraction from piston seals?

Clearly with pneumatics you can just vent the pressure to when you release the brakes.

I’ve tried to answer my own question here but I’m just thinking out loud AKA rambling!

Edited by EddyBee on Friday 22 February 12:24

Shakermaker

11,317 posts

99 months

Friday 22nd February 2019
quotequote all
EddyBee said:
I’ve got one;

Why do lorries and tugs etc use air brakes?
Most conventional brakes use hydraulics.

Diggers use hydraulic rams for moving buckets and the likes.
Obviously with normal car brakes when you release the pedal there’s no pressure so the piston retracts slightly due to the piston seals. Then with diggers you need a way of operating rams in the other direction/a return line.

Is it simply because you’d need some sort of hydraulic pump for the pressures involved? Also you’d need a return line/off loading circuit for the fluid because you couldn’t rely on the retraction from piston seals?

Clearly with pneumatics you can just vent the pressure to when you release the brakes.

I’ve tried to answer my own question here but I’m just thinking out loud AKA rambling!

Edited by EddyBee on Friday 22 February 12:24
I think because air lines are easy to hook up when you connect a trailer, and they have a fail safe where if the air leaks, it puts the brakes "on" but doesn't leak anything that could cause an accident on the road, such as hydraulic fluid.

MartG

20,622 posts

203 months

Friday 22nd February 2019
quotequote all
EddyBee said:
I’ve got one;

Why do lorries and tugs etc use air brakes?
Most conventional brakes use hydraulics.

Diggers use hydraulic rams for moving buckets and the likes.
Obviously with normal car brakes when you release the pedal there’s no pressure so the piston retracts slightly due to the piston seals. Then with diggers you need a way of operating rams in the other direction/a return line.

Is it simply because you’d need some sort of hydraulic pump for the pressures involved? Also you’d need a return line/off loading circuit for the fluid because you couldn’t rely on the retraction from piston seals?

Clearly with pneumatics you can just vent the pressure to when you release the brakes.

I’ve tried to answer my own question here but I’m just thinking out loud AKA rambling!

Edited by EddyBee on Friday 22 February 12:24
Difficult to couple/uncouple hydraulic lines to a trailer - you'd need to bleed the lines every time you swapped the trailer. Not a problem though with air brakes smile

V8mate

45,899 posts

188 months

Friday 22nd February 2019
quotequote all
MartG said:
Difficult to couple/uncouple hydraulic lines to a trailer - you'd need to bleed the lines every time you swapped the trailer. Not a problem though with air brakes smile
So why do buses use air brakes? No trailer issues there.

theplayingmantis

3,721 posts

81 months

Friday 22nd February 2019
quotequote all
Why do i sometimes wake up needing to pee in the early morning, nowadays, when in my 20's i never did unless id had a skinful.

does the bladder contract as you age?


also is shy baldder a thing?

if im desperate for a p on the train i wait till i get off and go at the station, but sometimes takes a good 20 secs or so to get going, if theirs someone in the next urinal or not. whereas when im at football or a night out or at work i have no issues in the urinals, again wherver i have a urinal buddy or not.

or do i have an underlying medical condition.

captain_cynic

11,873 posts

94 months

Friday 22nd February 2019
quotequote all
V8mate said:
MartG said:
Difficult to couple/uncouple hydraulic lines to a trailer - you'd need to bleed the lines every time you swapped the trailer. Not a problem though with air brakes smile
So why do buses use air brakes? No trailer issues there.
Safety, simplicity and better stopping power.

MartG

20,622 posts

203 months

Friday 22nd February 2019
quotequote all
V8mate said:
MartG said:
Difficult to couple/uncouple hydraulic lines to a trailer - you'd need to bleed the lines every time you swapped the trailer. Not a problem though with air brakes smile
So why do buses use air brakes? No trailer issues there.
Because they are built using truck components ?

SpeckledJim

31,608 posts

252 months

Friday 22nd February 2019
quotequote all
droopsnoot said:
Laurel Green said:
V8mate said:
droopsnoot said:
If I have to cook two "ready meals" in a microwave, and they're both the same in terms of cooking times, can I stick them both in at the same time? Do I have to add some time on? Can I put one on top of the other?
If one takes 4 mins, two will take 8 mins.

You can't stack them, as they need to breathe through the knife holes. I'd take them out after 4 mins and give them a little shake too.
I often cook this way and would add 50% for the second one = 6 mins.
OK, thanks. I suspect it's not going to be possible if they can't be stacked, for size reasons. I figured stacking would be an issue because of the holes.

The ones I'm using all seem to have a break half-way through, sometimes just for a rest, sometimes for a stir.

Cheers all.
One meal on the turntable.
The other meal on a saucer, balanced on a mug placed next to the first.
Then you can fit them both in there at the same time.

V8mate

45,899 posts

188 months

Friday 22nd February 2019
quotequote all
EddyBee said:
I’ve got one;

Why do lorries and tugs etc use air brakes?
Most conventional brakes use hydraulics.

Diggers use hydraulic rams for moving buckets and the likes.
Obviously with normal car brakes when you release the pedal there’s no pressure so the piston retracts slightly due to the piston seals. Then with diggers you need a way of operating rams in the other direction/a return line.

Is it simply because you’d need some sort of hydraulic pump for the pressures involved? Also you’d need a return line/off loading circuit for the fluid because you couldn’t rely on the retraction from piston seals?

Clearly with pneumatics you can just vent the pressure to when you release the brakes.

I’ve tried to answer my own question here but I’m just thinking out loud AKA rambling!
Spoke to my dad about it - he was a commercial vehicle technician back in the 1970s!
They're generally hydraulic at the wheel, but the air chamber acts on it with greater efficiency as it improves the foot pressure significantly.

Here's the full explanation
https://youtu.be/dMxilatT0qw

glenrobbo

35,077 posts

149 months

Friday 22nd February 2019
quotequote all
thesprayingmantis said:
Why do i sometimes wake up needing to pee in the early morning, nowadays, when in my 20's i never did unless id had a skinful.

does the bladder contract as you age?


also is shy baldder a thing?

if im desperate for a p on the train i wait till i get off and go at the station, but sometimes takes a good 20 secs or so to get going, if theirs someone in the next urinal or not. whereas when im at football or a night out or at work i have no issues in the urinals, again wherver i have a urinal buddy or not.

or do i have an underlying medical condition.
Urinal buddy? eek

I found your term somewhat disturbing! yikes
redcard

Or are you taking the piss?


Exige77

6,518 posts

190 months

Friday 22nd February 2019
quotequote all
48k said:
ashleyman said:
I'm renting a space for 5 hours, starting at 9AM.

Does my 5 hours finish at 1PM or 2PM?

I'm looking at it like this:

9 - 10 - 1 hour
10 - 11- 1 hour
11 - 12- 1 hour
12 - 1- 1 hour

= 4 hours in total.

So should I not get to use the space up until 1.59 or am I missing something here?
If you're renting it for five hours then you should have use of it for five hours surely? So your rental time runs from 9am untll 2pm (or 1:59.59)
1:59.59 would not be the full 5 hours. You would be a second short.

9:00 to 14:00

theplayingmantis

3,721 posts

81 months

Friday 22nd February 2019
quotequote all
hehe

Lets say neighbour then, i dont take a friend along to cross streams when i need a pee. Most of the time at least...

schmunk

4,399 posts

124 months

Friday 22nd February 2019
quotequote all
theplayingmantis said:
hehe

Lets say neighbour then, i dont take a friend along to cross streams when i need a pee. Most of the time at least...
"That's when good neighbours become good friends"

Clockwork Cupcake

74,402 posts

271 months

Friday 22nd February 2019
quotequote all
schmunk said:
"That's when good neighbours become good friends"
Strewth, mate! hehe

gothatway

5,783 posts

169 months

Friday 22nd February 2019
quotequote all
MartG said:
Difficult to couple/uncouple hydraulic lines to a trailer - you'd need to bleed the lines every time you swapped the trailer. Not a problem though with air brakes smile
Agricultural kit uses hydraulic lines for all sorts of purposes - grabs, tipping trailers - and you don't need to bleed anything. You might suffer a small loss of hydraulic fluid but if any it's negligible.
Edited to add that ag trailer brakes are often (usually ?) air.

Edited by gothatway on Friday 22 February 23:37

Clockwork Cupcake

74,402 posts

271 months

Friday 22nd February 2019
quotequote all
Who was it who was asking if you could cook a chicken by slapping it? And I replied that Kyle Hill would be the person to answer it.

He's only gone and done so
https://youtu.be/2CmOsrdXl0E

glazbagun

14,259 posts

196 months

Saturday 23rd February 2019
quotequote all
Might be worth spoiler tags, but I'm sure not going to attempt to watch it all again!

What happened at the end of Quantum Leap? Did Sam Beckett ever make it home, or was it just another episode before funding was cut?

schmunk

4,399 posts

124 months

Saturday 23rd February 2019
quotequote all
glazbagun said:
Might be worth spoiler tags, but I'm sure not going to attempt to watch it all again!

What happened at the end of Quantum Leap? Did Sam Beckett ever make it home, or was it just another episode before funding was cut?
https://en.m.wikipedia.org/wiki/Quantum_Leap_(season_5)
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