SoTexRattler

Yeah, but you gotta' watch out because some designs of more compact color CCD video camera chips are overly sensitive to near infrared energy and make exh manifolds and turbine engine exhausts look a WHOLE LOT hotter on video than what they really look like to the naked eye...
What to the eye is dull red/orange hot, looks like it is bright orange/yellow hot on video.

Something about the different spectral response of single CCD element chips with multiplexed filters -vs- multi CCD element chip designs with individual filters...
There was a color video camera comparison on a pulse-jet engine website. If I can find the website's vids again, I'll link it.

I couldn't find the gokart vid but this one looks white-hot.http://www.youtube.com/watch?v=EEHw9...eature=related
Here's one running on #2diesel!
http://www.youtube.com/watch?v=FlKDP...eature=related

SpeedyWS6

Cat 3512

They do get hot enough to see the impellor spinning. Ask me how I know...

purduepurdy

Ah, deja vu Speedy. Cat Fracs are pretty sweet and will take some punishment.

SpeedyWS6

I watched one run away on location one day... It knocked a hole in a piston with a valve and seat and once it started sucking oil the rig savers wouldn't even stop it. Had a 20' flame coming out the muffler so hot it melted the rain cap.

I have also seen one turn 2600 rpm and stay together... Only thing it tore up were the fan belts.

I love the old pumps, the new 3512's dont have as much character.

The_Head

The other day we were using some old Detroit diesel pumps, they have 4 turbos... pretty interesting. I like how they sound at idle.

Our 3512's are kind of old and worn out, they only make about 1700 hp.

They normally do not glow orange though. Only sometimes. I think they do that when the air filters start to get dirty.

DmaxEter

During my last fire truck pump class we ended the class with a day of testing variables during pump tests. We were using a freight shaker with a 6BT Cummins in it and after about the first thirty minutes the turbo housing was glowing big time. You could look at it close and see the mass of the impeller inside. It stayed like that for about 5 hours! We beat the heck out of that truck and it never gave up. The kicker to that deal is that truck does that about 12 times a year!

Fire truck pump testing with lower HP engines is a good way to test an engine. Those smaller motors have to work HARD to move 1500 GPM.

The_Head

Well what pressure are they moving 1500 gpm at?

There's a formula to determine hydraulic horsepower, but I don't it off the top of my head.

DmaxEter

1500 GPM with a 2 1/4" nozzle is only about 100psi at the nozzle. There is friction loss for each of the supply lines that has to be figured in for the pump pressure. Not a whole lot of pressure at the nozzle but just a lot of GPM.

The formula for water horse power is

GPM X Total Head in PSI
1712

I think thats it? Is that the one you were thinking about?

Southern Pride

the last time i was in iraq in 2006, we had several perkins generators. i bellieve that they were 500k. we had two of them. anyhoo, the mufflers were gettin clogged up from the best that i could tell, and the turbos would glow bright orange. and you could see the internals spinning to a degree. i took off the mufflers and almost immediately you could see a difference. the turbos started to cool off back to normal, and no more glowing. hahaha, i remember the iraqi soldiers that were with us came banging on the door of our hooch with an interpreter shouting something about the generators were on fire or were about to blow up. so i ran outside with a buddy, and we were watching the iraqis throw warm water right on their turbo to "cool" it. after one of them got burned by steam comin off it they backed away and i showed them what i did to our generator. anyhoo, thats just my story

The_Head

It's probably the same output, but the formula we use is converted to barrels per minute (~42 gpm) for the oilfield.