Thanks for showing! Not many good videos on Detroits running at a good steady rpms like this. Everyone seems to want to just rev them low/ high. They really start sounding good above the 1400 rpm mark.
That engine is around 450 hp mark in automotive use. 746 watts per hp minus power factor, fan and the fact that's it's running to 1850 for 60 hz and not 2100. The extra 50 rpms is to account for "governor droop" any mechanical governed engine will loose this under any reasonable load. That engine's doing good to keep up to that kind of load and only drop a few hz. I'm a TH-cam "know it nothing" but with a power factor of 80 percent, I'm guessing, that should be producing about 290 "real" hp to accomplish this. I'm glad to see heaters being used to load test. Nothing (well really a lot of things) erks me more that watching someone work on a (small engine) generator and test it with an electric drill! Heaters or incandescent light bulbs are the only easy way to test power output.
I literally do. There's a nice 16V149 1.25 miles away driving a refrigeration plant (I'm one of the many mechanics) and I can feel the Detroit roaring through the floor.
the three resistor banks!!! all the resistors turned red .because three wires are connected to each bank i think each is three phase. they have a fan to dissipate this quantity of heat.
@Andrew Crews the DDEC3 engines with electronic control and adj inj timing were very fuel effieient,yeah they pull hard hence fuel useage but at least they burn it not smoke it
Looks like you were way below 60 hz @ 90% load, is that acceptable? I know some hardware (computers, routers, switches, etc.) might not like the frequency variations. When I load up my home backup genset, the UPS picks up the frequency variations & kicks over to battery.
@@car2069 I knew a guy that put one in a 9K series GMC, double turbo and 730 horses to the ground. Straight pipes that'd make your heart hurt it sounded so good.
@@car2069 we had a V12 DD generator that all the maintenance guys were scared of, we test ran them monthly and so on. Anyway we fired it up one day and off she ran, full tilt from a stuck rack, you ever seen a guy try to run through a wall ? 😂 I pulled the flapper and shut her down, they me A vid BTW thanks 👍🇺🇸
Thing fell off a cliff. Running below 60hz. You either have major engine issues or, could just be that the governor or rack isn't set right, or you got that thing way overloaded. But judging by the amps she's not overloaded. So technically this genset failed the load test
sure... with 40kw of building load and the occasional surge to start an elevator it works fine in practice so it gets pencil whipped. This was filmed 8 years ago and she's still rockin.
@@car2069 40kw ain't even enough to keep thst girl from wet stacking. But that's awesome she's still in service. I think we need another cold start video👌🏻
looks like a little wet stacking coming from a partially leaky manifold gasket. it will burn off and clean itself out that's probably why theyre doing that 4 hour load bank to clean her out real well and run some fresh fuel through it as well
Keep in mind that the prime mover will more power than the generative capacity to handle load fluctuations... If I recall 12v71tt can be in the range of 550hp@2100 rpm but depends on the models particulars really.
The NAs (Detroit parlance for Naturally Aspirated means it still has blower[s] but no turbo) rates the 12/71 at ~350 for automotive use. The Turbo ones started at about 375hp up to about 435hp depending on application - again for automotive use. The marine series were rated higher again like 525hp for the turbo variants. I suspect that for power generation there were different ratings. There are so many variations it is difficult to know just by looking, however each unit has a placard stating what it is. Without that, generalizations are only possible. Remember that in automotive use the NAs lose power with temperature and elevation(or both) so even though the turbo variants are only 25-75hp higher they have the advantage of maintaining rated power in hot and high conditions which is a huge advantage on a hot day at 5000' for example.
Thanks for showing! Not many good videos on Detroits running at a good steady rpms like this. Everyone seems to want to just rev them low/ high. They really start sounding good above the 1400 rpm mark.
Dude! that intake manifold is killer!
That engine is around 450 hp mark in automotive use. 746 watts per hp minus power factor, fan and the fact that's it's running to 1850 for 60 hz and not 2100. The extra 50 rpms is to account for "governor droop" any mechanical governed engine will loose this under any reasonable load. That engine's doing good to keep up to that kind of load and only drop a few hz. I'm a TH-cam "know it nothing" but with a power factor of 80 percent, I'm guessing, that should be producing about 290 "real" hp to accomplish this. I'm glad to see heaters being used to load test. Nothing (well really a lot of things) erks me more that watching someone work on a (small engine) generator and test it with an electric drill! Heaters or incandescent light bulbs are the only easy way to test power output.
Detroits can handle 120% overload thats how well they are built
till the late 70's and early 80's,the build quality of the 92 series engines was shocking
Man I love Detroit Diesels.
most intelligent people did
I could literally fall asleep to this thing
I literally do. There's a nice 16V149 1.25 miles away driving a refrigeration plant (I'm one of the many mechanics) and I can feel the Detroit roaring through the floor.
the three resistor banks!!! all the resistors turned red .because three wires are connected to each bank i think each is three phase. they have a fan to dissipate this quantity of heat.
You are correct there were several ratings for power generation. Typically they were rated for 400 Kw for standby service.
you test that every 3 years... very cool!
Awesome video, thanks for sharing, thumbs up!
A year later, here I am watching this again HHAHAHAHA
only dropped 300rpm from no load full speed to loaded fullspeed,reknown detroit feature
That's why they were so good pulling sawmills. No droop.
@@lewiemcneely9143 and why when detroit gensets are parralled with 4 stroke units they use more fuel LOL
@Andrew Crews the DDEC3 engines with electronic control and adj inj timing were very fuel effieient,yeah they pull hard hence fuel useage but at least they burn it not smoke it
Looks like you were way below 60 hz @ 90% load, is that acceptable? I know some hardware (computers, routers, switches, etc.) might not like the frequency variations. When I load up my home backup genset, the UPS picks up the frequency variations & kicks over to battery.
Building load is ~30% and doesnt power anything sensitive, our elevators use a rotary ac/dc converter which is pretty fault tolerant.
+Frank Brants most electronics are rectified to dc current so frequency isn't critical
Just imagine having this in a semi truck. Would be nearly 600hp and about 1500ft lb torque.
Ive seen some drag semi's with them. Theres a video on my channel of them doing burnouts. Pretty awesome sounding too!
@@car2069 I knew a guy that put one in a 9K series GMC, double turbo and 730 horses to the ground. Straight pipes that'd make your heart hurt it sounded so good.
@@car2069 we had a V12 DD generator that all the maintenance guys were scared of, we test ran them monthly and so on. Anyway we fired it up one day and off she ran, full tilt from a stuck rack, you ever seen a guy try to run through a wall ? 😂 I pulled the flapper and shut her down, they me A vid BTW thanks 👍🇺🇸
No problem withthe power handle.
12V71T? 1000shp? 1700lbft?
Thing fell off a cliff. Running below 60hz. You either have major engine issues or, could just be that the governor or rack isn't set right, or you got that thing way overloaded. But judging by the amps she's not overloaded. So technically this genset failed the load test
sure... with 40kw of building load and the occasional surge to start an elevator it works fine in practice so it gets pencil whipped. This was filmed 8 years ago and she's still rockin.
@@car2069 40kw ain't even enough to keep thst girl from wet stacking. But that's awesome she's still in service. I think we need another cold start video👌🏻
what is the engine model
jovenal blasco 12v71 detroit diesel
1:44 oil leak?
If an old detroit isnt leaking, it has probably run out of oil! :)
+Benjamin “Ozias” Esposti if thats the only leak----WOW!!!! LOVE IT!!!!
What size fuel supply do you have for this and how long can it run on full load with available fuel?
looks like a little wet stacking coming from a partially leaky manifold gasket. it will burn off and clean itself out that's probably why theyre doing that 4 hour load bank to clean her out real well and run some fresh fuel through it as well
Yea that’s wet stacking. Very normal for these engines that don’t get worked hard very much.
so... 480 volts x 360 amps = 172,800 watts or 172.8 KW... so the engine should be making around 350 HP ?
Keep in mind that the prime mover will more power than the generative capacity to handle load fluctuations... If I recall 12v71tt can be in the range of 550hp@2100 rpm but depends on the models particulars really.
Very interesting, so this engine is only working at a little over half of it's capacity in this video....
Mark, you forget it's 3-phase. Assuming a .99 power factor since the load is mostly resistive, the load would be 358 kW. The engine load is 480 hp.
The NAs (Detroit parlance for Naturally Aspirated means it still has blower[s] but no turbo) rates the 12/71 at ~350 for automotive use. The Turbo ones started at about 375hp up to about 435hp depending on application - again for automotive use.
The marine series were rated higher again like 525hp for the turbo variants.
I suspect that for power generation there were different ratings. There are so many variations it is difficult to know just by looking, however each unit has a placard stating what it is.
Without that, generalizations are only possible.
Remember that in automotive use the NAs lose power with temperature and elevation(or both) so even though the turbo variants are only 25-75hp higher they have the advantage of maintaining rated power in hot and high conditions which is a huge advantage on a hot day at 5000' for example.
The governor will be set at 1850rpm so peak hp is irrelevant. Big mistake people make when choosing an engine for a gennie
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