Author Topic: Video of current setup  (Read 2280 times)

John (Boston)

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Video of current setup
« on: December 30, 2018, 05:07:57 PM »
Hello Everyone,

Made a little video yesterday of my current "temporary" setup.  This is the first winter that it's been outside and in a convenient position to run it.  Last year I did start it at about 32F one time.  It had straight 30 weight oil in it.  This winter I have 10-30 Kubota diesel rated oil in it.  Seems a lot better already.  It was 43F yesterday when I lit it off.

https://www.youtube.com/watch?v=aeJ38ZDjhZw


I'm going to do several test runs as it gets colder to make sure I can get it going when it's needed.  The crazy weather we have here will often bring a big snowstorm followed by several clear but below zero (F) days.  If the power goes out during the snowstorm I need this to start so the house doesn't freeze in the following days (pellet fired boiler for heat).

I originally had it set up in my basement but had to move it outside due to exhaust issues.  No matter how hard I tried, I couldn't stop the "bus smell" from creeping into the house (back of the bus smell).  I liked it inside because it was easier to run in winter and the waste heat was inside the house.  Plus it gave the whole house a comforting "throb", kind of like a ship.

-John (Boston)

Metro 6/1 (genset)
Cummins 6BT (89 Dodge truck, bought it new)
Cummins 4BT (91 Oshkosh bread truck)
Kubota D1005 (B2320 tractor)

LowGear

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Re: Video of current setup
« Reply #1 on: December 30, 2018, 05:49:24 PM »
Now that's what I call a trolley.  That is a wheel/roller under the generator end isn't it?

Nothing is more permanent than "temporary".  I'm betting the video of moving it from the basement to the garage would be fun too.
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vdubnut62

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Re: Video of current setup
« Reply #2 on: December 30, 2018, 07:01:06 PM »
Like Casey, I would love to see the video of the beast being moved! Good build, and a very ingenious use of rubber chock blocks, I may  have to borrow that idea.
Ron.
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BruceM

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Re: Video of current setup
« Reply #3 on: December 30, 2018, 08:15:53 PM »
I must assume John must have disassembled it to move it. 
Nice looking setup, John.




ajaffa1

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Re: Video of current setup
« Reply #4 on: December 30, 2018, 10:59:52 PM »
Very nice video John, thank you. I have a question about your ST generator head, I have looked at a lot of videos of these heads in operation, yours rotates anti clockwise when viewed from the pulley end. I have also seen them running clockwise. The instruction manual for my head clearly shows it running clockwise, what effect if any would this have on the polarity of the output?

Bob

BruceM

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Re: Video of current setup
« Reply #5 on: December 31, 2018, 12:45:33 AM »
The ST heads I'm familiar with work equally well in either direction. My ST-3 is running CCW to make room for a compressor head driven off the other flywheel, most run it CW for a smaller frame footprint.

mike90045

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Re: Video of current setup
« Reply #6 on: December 31, 2018, 03:48:50 AM »
Very nice video John, thank you. I have a question about your ST generator head, I have looked at a lot of videos of these heads in operation, yours rotates anti clockwise when viewed from the pulley end. I have also seen them running clockwise. The instruction manual for my head clearly shows it running clockwise, what effect if any would this have on the polarity of the output?

Bob

Your AC is 180 deg out of phase and L1 becomes L2   .    But seriously, nothing happens.  Maybe if brushes were broken in one direction, they may have to "wear in" for the other direction.

tiger

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Re: Video of current setup
« Reply #7 on: December 31, 2018, 04:01:39 AM »
Was'nt there discussion about the air flow thru the gen head for cooling?
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mikenash

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Re: Video of current setup
« Reply #8 on: December 31, 2018, 05:30:54 AM »
Probably depends on whether it has straight (flat) fan blades or shaped, one-directional) ones?

BruceM

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Re: Video of current setup
« Reply #9 on: December 31, 2018, 06:27:17 AM »
Mike's right, the typical ST fan blade is straight and bidirectional.

glort

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Re: Video of current setup
« Reply #10 on: December 31, 2018, 06:34:05 AM »
Mike's right, the typical ST fan blade is straight and bidirectional.

How can it be straight and bisex...... OH! bi DIRECTIONAL.   Got it!   :embarassed:

I can't ever remember seeing blades on a motor or gen head that weren't straight.  As unfashionable as being straight seems to be these days.

ajaffa1

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Re: Video of current setup
« Reply #11 on: December 31, 2018, 08:39:12 AM »
Hi Guys, none of the replies have really answered my question. On a standard generator head there is one tapping which remains neutral while the other tapping swings from +370 volts to -370 volts (240 volt RMS). My concern is that rotating the generator head in the wrong direction will reverse this so the neutral will swing from +370 volts to -370 volts. Not a problem until you have an appliance that has a shared earth and neutral, at which point the sh1t hits the fan. This could have significant effects on the performance/life expectancy of the generator, AVR`s and the operator.

Bob

oldgoat

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Re: Video of current setup
« Reply #12 on: December 31, 2018, 11:10:53 AM »
43 degrees and bare feet you are an ironman.

glort

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Re: Video of current setup
« Reply #13 on: December 31, 2018, 02:03:43 PM »

In this country Bob, you should not have any appliances with a shared earth and neutral.  That's been a big no no for a long time here.
Everything I have read says it does not matter which way an alternator spins other than for the cooling fan. 

The biggest problem I can see in your scenario is not with the gen head but rather with the neutrally grounded appliance. This would only be a problem if the  appliance were wired with the neutral and active reversed which would  make a metal bonded appliance live and could give one a dose of the old defibrillator action.

I don't see where direction will make any difference because the active and neutral are still going to be where they should regardless of the order the current alternates and the order of the zero crossing point. It's going to change direction back and forth anyway, only thing important is the polarity of the active and neutral remains correct.

Johndoh

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Re: Video of current setup
« Reply #14 on: December 31, 2018, 03:57:08 PM »
Barefoot engineer you have to love it!
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