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Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000

 
Anonymous Coward
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12/12/2015 06:30 PM
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Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
There's a lot of advantages to an 1800 RPM generator... you would think that spinning the motor at half the speed would give you two times the life out of a motor. In fact you will get more like 15 times the lifespan, it is more of a exponential relationship the faster an engine turns. All large commercial generators operate in this manner.

Also, fuel efficiency is greatly improved because the engine is much closer to it's torque peak, and noise is similarly cut in half. Even more so if you build it into an enclosure.

Also making your own generator, you can add a larger fuel tank that would only have to be filled once a day, or even once every other day. The larger sump of the twin cylinder full pressure lubrication engines allows a longer time in between adding oil as well... plus there is a filter.

I am currently in the process of building one utilizing a twin cylinder engine bought for only $200 that came out of a riding lawnmower. It can be paired with this generator head that can be had for $300 at Harbor Freight:

[link to www.harborfreight.com]

You can expect to spend another $200 on v-belts and pulleys, and the other $300 to add a fuel tank and build a frame/enclosure, and for miscellaneous expenses.

This will give you a generator that will power just about any average home... it might be a little tight if you have a large central AC and a well pump, but it would power one or the other just fine.

Keep in mind that you will need twice the normal horsepower engine to power the generator, since it's being run at half the speed. A 20+ hp twin cylinder should work great.

If anyone is interested, I can post more of the specifics. At this point all I have is the engine, all the other parts are on order.
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
very very interested pls continue!
“We have assembled the most extensive and inclusive Voter Fraud Organization in the history of America”—Joe “SippyCup” Biden

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Anonymous Coward (OP)
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12/12/2015 06:44 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
very very interested pls continue!
 Quoting: Bodiless


Hiya Bodiless!!! The first place to start is looking through Craigslist for a motor.

There are a lot of people with riding lawnmowers who have the transmission or mower deck shit the bed, and then sell the motor for cheap to try and recoup a few bucks.

But if you have ANY type of old power equipment, you can use the motor from that too. Even if you have a smaller motor, it will still work just with a reduced total power output.

Most homes that don't have a well pump can be run just fine on a 5KW generator, so if you have a 10HP engine lying around it would work great.

If you have something in mind, I can get you the part numbers and places to order the pulleys you will need... I just need to know the shaft diameter, or tell me the model of the engine and I can probably look it up.
Shiva ascendant

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12/12/2015 06:46 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
I prefer nat gas fuel but other than that I like your post. Dead right on low speed engines in particular. applause
This is the way the world ends.
This is the way the world ends.
This is the way the world ends.
Not with a bang but with a whimper.
Anonymous Coward (OP)
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12/12/2015 06:51 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
I prefer nat gas fuel but other than that I like your post. Dead right on low speed engines in particular. applause
 Quoting: Shiva ascendant


That would be the ultimate... assuming you are preparing for a normal power outage. You never have to worry about running out of fuel.

I was considering that, but I don't want to have to hack into the piping in my house.

And if you are using a motor salvaged from a riding mower, you would need to buy a gaseous fuel carb... but that's not too expensive.

I really wanted to build this with a diesel engine, but it's too hard to find one used for a good price.

You can get one for about $800 from the Carrol Stream Motor Company, but it's only a 10hp so it will limit you to about 4.5 KW.
Mr. NorM

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12/12/2015 06:54 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
five stars
Married to a ginger
Shiva ascendant

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12/12/2015 06:56 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
I prefer nat gas fuel but other than that I like your post. Dead right on low speed engines in particular. applause
 Quoting: Shiva ascendant


That would be the ultimate... assuming you are preparing for a normal power outage. You never have to worry about running out of fuel.

I was considering that, but I don't want to have to hack into the piping in my house.

And if you are using a motor salvaged from a riding mower, you would need to buy a gaseous fuel carb... but that's not too expensive.

I really wanted to build this with a diesel engine, but it's too hard to find one used for a good price.

You can get one for about $800 from the Carrol Stream Motor Company, but it's only a 10hp so it will limit you to about 4.5 KW.
 Quoting: R. Wordsworth


Best bet for a small diesel is probably a Kubota lawn tractor IF you can find one that has problems other than the engine. Low speed Diesel would be my second choice before gasoline.
This is the way the world ends.
This is the way the world ends.
This is the way the world ends.
Not with a bang but with a whimper.
Anonymous Coward (OP)
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12/12/2015 06:58 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
:five stars:
 Quoting: Mr. NorM


Hiya Norm!!! The way this winter is turning out in our neck of the woods, hopefully I only will be testing this thing and not using it for real.

I was working outside in a t-shirt today!

:mindblown:
Anonymous Coward (OP)
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12/12/2015 07:01 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
Seems like there are enough people interested... I will keep this thread alive as I see this project through to completion.

I will check in periodically if anyone has questions should you choose to make one of your own.

5a
Anonymous Coward (OP)
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12/12/2015 07:06 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
The other key to the project is getting the proper pulleys and v-belts, to increase the speed of the engine to the 3600 RPM needed for the generator head.

McMaster Carr has some reasonably priced pulleys, I chose a 8" pulley for the engine and a 4" pulley for the generator head.

I will post the part number for the proper pulley for the head, what you will need for the engine depends on what you end up getting your hands on.

Please note you will need a double pulley to handle the power, a single v-belt will slip when large loads kick on.
Anonymous Coward (OP)
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12/12/2015 07:09 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
This is a great web site to calculate the ratios of various size pulleys. Keep in mind that the "pitch diameter" of the pulley is the important measurement, as opposed to the actual size of the pulley.

This takes into account how the v-belt sits in the groove... it is usually listed where you are buying the pulley.

[link to www.gizmology.net]
Comrade Batman

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12/12/2015 07:10 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
how noisy is the generator head?
Agent Smith 2014

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12/12/2015 07:12 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
What about running it on hemp?
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Anonymous Coward (OP)
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12/12/2015 07:15 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
This is the McMaster-Carr part # for the pulley you will have to buy for the generator head: 6209K188

You will also need this bushing: 6086K32

For the engine, you will need this pulley: 6209K134

The bushing will depend on what engine you have.

You will need to get a B-Section V-Belt to attain the proper ratio... 67" will give you a 2 foot distance between the engine and the head, which should be more than enough.
Anonymous Coward (OP)
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12/12/2015 07:16 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
how noisy is the generator head?
 Quoting: Comrade Batman


Electrical or audible noise? I haven't actually run this model yet, but I haven't read about anyone having any problems with electronics.

As for audible noise, with the lower engine speed the bearing noise and fan noise are probably about as loud as the engine itself if you put on a good muffler.
Anonymous Coward (OP)
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12/12/2015 07:18 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
What about running it on hemp?
 Quoting: Agent Smith 2014


You could do it, if you built your own gasifier.

Or... you could get high in the dark!!!
Mr. NorM

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12/12/2015 07:18 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
five stars
 Quoting: Mr. NorM


Hiya Norm!!! The way this winter is turning out in our neck of the woods, hopefully I only will be testing this thing and not using it for real.

I was working outside in a t-shirt today!

mindblown
 Quoting: R. Wordsworth


I really want snow, but this is hard not to like.

Its way to hot! My body is ready for sub freezing temps and it's 60 freakin degrees!

I actually have a 12hp rider that isn't currently working. Engine cranks. Needs carb work/new plug..
Married to a ginger
Anonymous Coward (OP)
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12/12/2015 07:20 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
I actually have a 12hp rider that isn't currently working. Engine cranks. Needs carb work/new plug..
 Quoting: Mr. NorM


At 1800 RPM that would give you about 5 KW, if you don't have a well pump that would be great to power a house.
Nikola Tesla

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12/12/2015 07:24 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
I prefer nat gas fuel but other than that I like your post. Dead right on low speed engines in particular. applause
 Quoting: Shiva ascendant


That would be the ultimate... assuming you are preparing for a normal power outage. You never have to worry about running out of fuel.

I was considering that, but I don't want to have to hack into the piping in my house.

And if you are using a motor salvaged from a riding mower, you would need to buy a gaseous fuel carb... but that's not too expensive.

I really wanted to build this with a diesel engine, but it's too hard to find one used for a good price.

You can get one for about $800 from the Carrol Stream Motor Company, but it's only a 10hp so it will limit you to about 4.5 KW.
 Quoting: R. Wordsworth


At this price, I'm thinking of purchasing 3 of the generators. That way I will have spares for the future.
"One person with courage is a majority." - Thomas Jefferson

"You’ve heard that we are what we eat. But we also are what we think".

“Liberals claim to want to give a hearing to other views, but then are shocked and offended to discover that there are other views."
-William F. Buckley Jr.
Anonymous Coward
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12/12/2015 07:26 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
very very interested pls continue!
 Quoting: Bodiless


I have had owned 4 cylinder ford powered 1800 rpm generators but mine were water cooled. Very quiet and run forever.

Here is what our neighbors use for around $600. I have used it for our well which is 1 1/2 hp deep well. The reviews are good too. Just don't use any ethanol especially if to be stored.

[link to www.northerntool.com]

Northern tool also mails out coupons that can be used even if product is on sale. Probably another $50 off.
Anonymous Coward (OP)
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12/12/2015 07:30 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
At this price, I'm thinking of purchasing 3 of the generators. That way I will have spares for the future.
 Quoting: Nikola Tesla


If you have the electrical ability, as you avatar would suggest, the only common failure point in this head from what I have read is a capacitor in the brushless electronics.

If you dig in there you could probably get enough spares to rebuild the whole thing for much less.

Another note... with this head the most common failures are heat related, due to engine heat blowing over it when used with a coupling as opposed to v-belts.

I am going to prevent this by building separate compartments in the enclosure so that the engine and head have their own cooling air source, and no engine heat makes it's way to the generator.
bigD111

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12/12/2015 08:33 PM

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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
Yes please! That would be great.
deplorably republican
Mkguyver

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12/12/2015 08:37 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
You lost me at: staking your survivability on Harbor Freight parts.

Low reliability rating!
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12/12/2015 08:53 PM

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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
very very interested pls continue!
 Quoting: Bodiless


Hiya Bodiless!!! The first place to start is looking through Craigslist for a motor.

There are a lot of people with riding lawnmowers who have the transmission or mower deck shit the bed, and then sell the motor for cheap to try and recoup a few bucks.

But if you have ANY type of old power equipment, you can use the motor from that too. Even if you have a smaller motor, it will still work just with a reduced total power output.

Most homes that don't have a well pump can be run just fine on a 5KW generator, so if you have a 10HP engine lying around it would work great.

If you have something in mind, I can get you the part numbers and places to order the pulleys you will need... I just need to know the shaft diameter, or tell me the model of the engine and I can probably look it up.
 Quoting: R. Wordsworth


Actually I am in the process of building a mini hydroelectric outfit from a high speed washer and pond feed. Water drops 6 feet thru 18 feet of coiled 6inch flex for head pressure.


But your post is very interesting.

I would also appreciate, with your background and knowledgebase, your evaluation of this:

[link to www.youtube.com (secure)]
“We have assembled the most extensive and inclusive Voter Fraud Organization in the history of America”—Joe “SippyCup” Biden

Joe Biden will never be the man Michelle Obama is

The worst thing about dying is that you become a democratic voter for eternity
Anonymous Coward
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12/12/2015 08:57 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
rrun it on acohol
BodilessModerator
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12/12/2015 09:05 PM

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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
This is my kinda thread. I am guessing everyone here knows about the no electricity water pump--lifting 30 feet, if not, and interested, I'll post the video and you can scale to your needs.

I use it with water bladders to water my gardens at the farm
“We have assembled the most extensive and inclusive Voter Fraud Organization in the history of America”—Joe “SippyCup” Biden

Joe Biden will never be the man Michelle Obama is

The worst thing about dying is that you become a democratic voter for eternity
Anonymous Coward
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12/12/2015 09:15 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
This is my kinda thread. I am guessing everyone here knows about the no electricity water pump--lifting 30 feet, if not, and interested, I'll post the video and you can scale to your needs.

I use it with water bladders to water my gardens at the farm
 Quoting: Bodiless


I am definately interested. Is it very loud? If you are talking about the ram method, that is.
bigD111

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12/12/2015 09:21 PM

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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
You lost me at: staking your survivability on Harbor Freight parts.

Low reliability rating!
 Quoting: Mkguyver


Check out Grainger.com... they have lots of this sort of thing and qualified people to answer questions. I ordered a new compressor pump, my air compressor in the shop is 60 years old, and obsolete. They put a technical specialist on and he found one with the same amount of output and I only had to redrill one hole for mounting. It works great! Good experience with the company.
deplorably republican
Nikola Tesla

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12/12/2015 09:24 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
At this price, I'm thinking of purchasing 3 of the generators. That way I will have spares for the future.
 Quoting: Nikola Tesla


If you have the electrical ability, as you avatar would suggest, the only common failure point in this head from what I have read is a capacitor in the brushless electronics.

If you dig in there you could probably get enough spares to rebuild the whole thing for much less.

Another note... with this head the most common failures are heat related, due to engine heat blowing over it when used with a coupling as opposed to v-belts.

I am going to prevent this by building separate compartments in the enclosure so that the engine and head have their own cooling air source, and no engine heat makes it's way to the generator.
 Quoting: R. Wordsworth


It sounds as though you have thought about this very carefully. Engine heat is a common problem in other much larger commercial gen-sets.

Yes, capacitors are a point of failure in many power generation or control circuits.

Separating the generator from the engine is a good idea and I thank you for stimulating my thought processes about this.

I prefer the idea of using a coupling rather than V belts between the engine and the generator.

I'm surprised by this product being available at Harbor Freight. Usually they are selling package units of various sizes with the engine and generator together.

This seems to be a very good opportunity.

peace
"One person with courage is a majority." - Thomas Jefferson

"You’ve heard that we are what we eat. But we also are what we think".

“Liberals claim to want to give a hearing to other views, but then are shocked and offended to discover that there are other views."
-William F. Buckley Jr.
GodSaveAmerica

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12/12/2015 09:39 PM
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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
bump
M*walk
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12/12/2015 09:40 PM

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Re: Build your own 1800 RPM 10KW generator for the ultimate SHTF power source under $1000
What about running it on hemp?
 Quoting: Agent Smith 2014


You could do it, if you built your own gasifier.

Or... you could get high in the dark!!!
 Quoting: R. Wordsworth


You remember those threads and videos of the guys who convert their cars to run on gas fumes, if you could apply that to your gas engine, that would be an awesome combo. Your worries about fuel consumption and running out would diminish.
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