something to pick the kids up from school in..

[maddy]

Looked pretty small from where i was standing at 'the big pit'

[Grunt]

can trucks handle?

[Beavis]

bigmuz: I've driven a 777, which is obviously smaller than the 787 and 797. From memory the engine is a big (16L I think?) turbo V8 diesel, 7-speed semi-auto box. They actually go quite well, they're limited to 70km/h or so. They get up to speed (when empty) quicker than you'd think!

They're also surprisingly pleasant to drive, it really is just like driving a big car. Except for the fact that the brakes are power-assisted from the engine; which means if you need brakes then you need revs! That takes some getting used to.

[Weightz]

:D How many kids have u got, looks like big bucket-fulls

[Jim]

I used to work on these things, but the biggest they had was a 793B which is somewhere between that big bitch and the 777. 793B is quad turbo V16 and about 52L from memory.

[cya18r]

The big mama engine is 117.1L

http://australia.cat.com/cda/layout?m=64165&x=7

With that payload capacity, it could carry a Jumbo Jet. Bill, there's your new tow car :D

[JabberWocky]

On a Perth trip a few years a ago we dropped into the super pit near Kalgoorlie or Koolgardie, cant remember which. I was young but remember the mechanic there said the trucks were desiel electric as they were more reliable. I.e. the desiel motor was the generator for the electric motors on the wheels. The trucks were doing about 80ks down the hill and about 3ks up fully loaded. Was one big mutha of a hole though!!

[Tuckerbox]

117.1L

with a
170 mm bore
215mm stroke

I always get these calcs wrong, but I worked out 24 cylinders from that. Is that right?

BTW where are the engines in these things and what configuration are they?

[Tripper]

ill get some pics from work, have few good shots of fuck ups in them

[bv]

yep I think its a 777 next to the 'bertha in the top piccy for comparison

the father in law sent thru the pics - i think they might need a bigger jack to change the tyres

stats for the click-inhibited

Bore
6.7 in / 170 mm
Stroke
8.5 in / 215 mm
Displacement
7143 in3 / 117.1 L

Transmission
Forward 1
7 mph / 11.3 kph

Forward 2
9.5 mph / 15.2 kph

Forward 3
12.7 mph / 20.5 kph

Forward 4
17.2 mph / 27.7 kph

Forward 5
23.1 mph / 37.2 kph

Forward 6
31.2 mph / 50.3 kph

Forward 7
42 mph / 67.6 kph

Reverse
8 mph / 12.9 kph

Final Drives
Differential Ratio
1.265:1

Planetary Ratio
16.67:1

Total Reduction Ratio
21.09:1

Brakes
Brake Surface - Front
51243 in2 / 330517 cm2

Brake Surface - Rear
51243 in2 / 330517 cm2

[Beavis]

On a Perth trip a few years a ago we dropped into the super pit near Kalgoorlie or Koolgardie, cant remember which. I was young but remember the mechanic there said the trucks were desiel electric as they were more reliable. I.e. the desiel motor was the generator for the electric motors on the wheels. The trucks were doing about 80ks down the hill and about 3ks up fully loaded. Was one big mutha of a hole though!!

Yep that's correct, the bigger dumptrucks (787s and up I think, AFAIK 777s are still regular) have big-arse diesel engines but the wheels are actually driven by electric motors. Saves having monster driveshafts & diffs...

[meggala]

so what do you do if you need a piss on one of them it would take 5 mins to get down or are they toilet equipped?

awsome pics thanks for sharing

[liquid_chrome]

Hey, is it turbo'd ??!?!?! :p

[The Pupat]

mining equipment is cool.

drag lines are cooler than huge dump trucks though... well at least for the geeky inclined ... huge head fuck looking at computer stability control when using them.

[Rollin]

man that last post just fucked with me head! (or is it just me because its late?)