things that might make you go WOW!!!!! thread

[Bucket on wheels]

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[6feetdown]

6M views · 5.1K comments | Amazing Process Of Recycling Tires into Oil || Incredible Effort Extracted Black Oil From Old Tires | Amazing Process Of Recycling Tires into Oil || Incredible Effort Extracted Black Oil From Old Tires | By Amazing Technolo

Amazing Process Of Recycling Tires into Oil || Incredible Effort Extracted Black Oil From Old Tires

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Net zero in action

 

[V8Druid]

watched that a few months ago and thought WTF!!!!! eat yer heart out Greta

 

[William127]

Lancaster flypast over Stradstet Vintage Rally this afternoon
Air powered starter on an old crawler, amazing

 

[V8Druid]

 

[Gecko]

At the end of the war (the european part of the war at least), all the left-over parts, spares and unfired rockets were crated up and shipped to the US (along with the designers) where they were renamed the Redstone Rocket. The race to the moon had begun.

 

[Lancs Lad]

View attachment 72161View attachment 72162

Remember my grandad who grew up in London in ww2 talking about the V2s with a shudder...

 

[V8Druid]

Remember my grandad who grew up in London in ww2 talking about the V2s with a shudder...

yeh they were fine 'til you couldn't hear them any more (ran out of fuel) then they dropped like bricks - fiendishly clever weapon for their time

 

[Gecko]

yeh they were fine 'til you couldn't hear them any more (ran out of fuel) then they dropped like bricks

That was the V1 (buzz bomb).
The V2 arrived at three times the speed of sound, so there was no warning at all.

A quote from wiki:

The British government, concerned about spreading panic or giving away vital intelligence to German forces, initially attempted to conceal the cause of the explosions by making no official announcement, and euphemistically blaming them on defective gas mains.
The public did not believe this explanation and therefore began referring to the V-2s as "flying gas mains".

 

[Lancs Lad]

yeh they were fine 'til you couldn't hear them any more (ran out of fuel) then they dropped like bricks - fiendishly clever weapon for their time

No that was the v1 doodlebug the V2s were lethal much more accurate.

Edit...as above. He said if V2s had been earlier London would have been wiped out

 

[Gecko]

One thing worth considering with liquid fueled rockets is the power required just to run the fuel pump(s).
The V2 only fired it's engine for 65 seconds, but the fuel was consumed at a rate of 125 l/s.
To deliver fuel at this rate, the pump alone needed 650hp.

 

[V8Druid]

One thing worth concidering with liquid fueled rockets is the power required just to run the fuel pump(s).
The V2 only fired it's engine for 65 seconds, but the fuel was consumed at a rate of 125 l/s.
To deliver fuel at this rate, the pump alone needed 650hp.

consumed 8.75 t of fuel in 6-7 minutes -- the pump weighed half a tonne and was driven by 675hp steam turbine

 

[Gecko]

consumed 8.75 t of fuel in 6-7 minutes --

I noticed several sites claim the burn time to be 6~7min while others are more modest at around 60sec.

The V2's speed at engine shutdown is 5500km/h (1.5 km/s), and max range is 300km, and we pretend the flight path is circular (it isn't, but it makes the maths easier), then the max. distance traveled by the V2 is about 900km.
900km @1.5km/s takes 600sec (10 min).
So 6~7min is about right for the total flight time of a mid-distance impact.

Technical data V2 rocket

 

[V8Druid]

I kid you not ..... the search was " Large fuel pick up filter gauze " ... look at the third item in the page that came up
how bloody random can you get ??????
I just had to open it and OMG!!! pictorial instructions and all ... and strangely enough it ain't coming from China -- for a change - FRANCE !!!!

 

[V8Druid]

this was the sort of thing I was after Dan -- but I ain't paying 50 quid for one .. want something suitable for the coolant on the horizontal band saw

this is more like it, but would have to create a body/fittings for it -- ideal for what I want though

or better still find one of these gauzes off this foot valve --- and look who's flogging 'em

found some

 

[Gecko]

The V2 only fired it's engine for 65 seconds, but the fuel was consumed at a rate of 125 l/s.
To deliver fuel at this rate, the pump alone needed 650hp.

As impressive as those numbers are, 20 years later, the Saturn engines were being spun up.

The Saturn5 engine (used for the Apollo flights) were on steroids.
The fuel pump consumed 55000 Hp as it delivered 2.5 ton per second into the engine.
2500 l / sec is pretty impressive, but that's 'per engine' and it had five of them.

 

[Stroppymonkey]

this was the sort of thing I was after Dan -- but I ain't paying 50 quid for one .. want something suitable for the coolant on the horizontal band saw

View attachment 72177


this is more like it, but would have to create a body/fittings for it -- ideal for what I want though
View attachment 72178

or better still find one of these gauzes off this foot valve --- and look who's flogging 'em
View attachment 72179

found some
View attachment 72180View attachment 72181

We have a few of these knocking about .. the glue they use to bond the mesh to the plastic will dissolve in kerosene :-(

 

[V8Druid]

We have a few of these knocking about .. the glue they use to bond the mesh to the plastic will dissolve in kerosene :-(

won't be anywhere near Kero Stroppy -- soluble oil in the coolant sump

 

[6feetdown]

I kid you not ..... the search was " Large fuel pick up filter gauze " ... look at the third item in the page that came up
how bloody random can you get ??????
I just had to open it and OMG!!! pictorial instructions and all ... and strangely enough it ain't coming from China -- for a change - FRANCE !!!!
View attachment 72176

Yeah yeah 3rd item

 

[V8Druid]

We have a few of these knocking about .. the glue they use to bond the mesh to the plastic will dissolve in kerosene :-(

but oddly not in cherry - have a couple that I use for transferring fuel and haven't had any issues yet